Mark Edward Kozelek (born January 24, 1967) is an American singer, songwriter, guitarist, record producer and occasional actor. He is the vocalist and primary recording artist of the indie folk act Su
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x783833fd018723a3f203242d54c7abe2aeb706f3d11880dec4d8ed478d315aa5. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/98d509da-bc53-4c68-b715-ea05358f14ec.json and https://artists.proofprofile.net/proofs/artist/98d509da-bc53-4c68-b715-ea05358f14ec.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x042643127279ad9b5507b968c6c6cabc9aa27a6845906808e582596f4b647794. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:19:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US36Y0400095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd59b32a67da343f5cacf81c0b740652e2ef3f616751675810b3f1115e7856e8. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:03:43Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US36Y0400096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15fd14f1a82d9bccd1b464844d8977e33ecd77ab7c3e93f2aae24c76d71e6fd5. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US36Y0400097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38d5c6f4df31f30938fa92ee2fb52e2308d0d5e838e6040e2241bba398f1e8b3. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:05:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US36Y0400098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11c1bfd3dc84ae599ebee607f5caff1b2c7790273e886f528d0c6abb18c45d25. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US36Y0400101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x792c3ef79e5cbd4679069c8d832b0a9133e9c995b0b3ffbe57997de4d04b4654. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US36Y0400086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c20e46aad8f7dace9930e57adfc490012c07b677fcf18078bfc91eea90daf73. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US36Y0400087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee8c8421903a61fa9f15812a4d1d663dd8a956e127340fda6e7a6ee7d1a6cd9a. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US36Y0400088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc134abab9ed662efda464387661814f09bb7f4c08a9035ee6371904826738ac8. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US36Y0400089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0916d337118ca04bf044f46f3833299f3c12e3795c4cc1508c88620f2a8aed6. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:38:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US36Y0400091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x549fa55b7c1d954d07b8b30a5909c6fae6d8343add25cc6e2254bea73bc67129. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:06:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US36Y0400092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa718f1f51d5660da647a00410a6f179a50d67df50c319c385c9c87ab6fe392a7. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCABF1295157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc74285006087499d744582a2573730136e48e44a0eface9b3adfab1d537bd2c8. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCABF1295159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9225329090a9aacce7dc6279af56f89ec7444c23bd045d52d11f39f8dd5d2fdc. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCABF1295164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf35c2dd024a3bd9d4632586ce5d336001adcce59f287e3219c864010ebc1bc86. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCABF1295173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd5e73dfcbc2cc6e5472804bfadc1c8123fc6580fdcb37caa3096a4118fc00aa. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCABF1295174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9b1cd7baca5c61a2ae0385fb73108fc65c681994f0f8c9f5c088177717a5e76. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA2B0869402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2d4b807242e60e18e6eefd21c382eecad625e6467579d6fb8e44115f91f2def. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAFO2148111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8f73f6a881dcd4c329feab407296f64125878ae7f0cf059059296b1d78be9ca. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:08:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCABG1210987.
I Know It's Pathetic but That Was the Greatest Night of My Life
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3daf09d3390b0d0a3b73294fa59b450bf216bdb51559607576bfd545ad07612. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCABM1322794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fcdb4583c9973080a31b09c72c231e2b3fdad5245edf682a6c81300d4d6e421. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCABM1315024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dc7054522086d0457ae044798364f42fa5e07e8f2866a263a1463ce6fcdd3a1. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCABM1315025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1e14e5b682ac155d7892fed4177f49c75fea31f9077eecedfdb4dac67d579d4. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCABM1315033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x276e0752c7f53ffe34159d0ea6239e4fd4f7db673a3d324e40a2f84f7082be71. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCABM1315037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e1572396ac4334379e915a4d66e4053bd81e5e947999a070277cd6b5b0974af. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:38:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCABM1396434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddbf6f34aa704b251617c8f86259b4f474b66bdd122357768f08a80bf60fa483. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCABM1396437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f4be7020116545217cda3f823bb7cbb5004c8a4b8d932acb3ca23de2dc65f39. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCABP1373756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf78eab239743c8c5331e14d9485703741d8e58d416da56678d16316509773b7b. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCABP1373758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfb832249929cff8911765e9bbfbf50dab4334d1ad5b05bdc114f71c9e8f261a. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCABP1373759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea08ecd1cd61b3fb57aa37c471c251751c4015cc3def07c1b9d7cf97901df1dd. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCABP1373762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11895fddf68a2c2b0989ca82d0b969ceb544b2397483a558b57091b541e9cc79. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCABP1373763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6761ca0ea1b8ec2b322d96e8d98cac6c7dde04b9a255d13df5bdf7cd0c0fa349. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:03:54Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCABY1421109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a9fe4fe97a32c380fbd03ed8052fd4dd7e518f3c5b0ad6a6acf2fb26f108ee2. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCACB1403730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0db1f15f4047fd6f09ac524695fef5170a3644f1bd51cc9c7cf44f98482d1645. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCACB1403733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafb525859a281a2b74374b9da216ec632c9de55bd93d6727398e7522385584e2. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCACB1403738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba2c95a966d083ae9600b550c78bcb0cc9c61adb94902f89845d91d99ea2ea15. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCACO1602262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1609a4e959f7e91878a88e1d31e7c91f7109eb8d9226ba8852c4349248cf506a. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCACO1602264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x826cd02be6fe6000f20cded0b38aaf91997d92be7b43e27e4091a66ebf219cb9. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T09:23:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCACO1602265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6f97c04e2e8322f4dc371fe06f0941d55feadc10e226bae658850c7df0ed71a. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCACO1602267.
Mark Kozelek with Ben Boye and Jim White
mark kozelek with ben boye and jim white
Mark Kozelek with Ben Boye and Jim White 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3378533d8694b4cea1a10736b03bd2f5f0172c15fdb62921d41e57dfe1e04c2a. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAFF2076915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x488fb05a6543f5d874931fbecf8f2eb617d130906d9daba10b7fde51909323c2. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAFF2076919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ff7b7b3342bf821497125c21c17bb37518a4b12de88b0364d4a123b5049812b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAFF2076925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25ee996659c59e195bbfb3cc2a63718bf2ba6312829a4c0f1b4cb410d9424631. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAFF2076939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf34e24c95c469f2838b5259483aa03fbe0e3f99d2b26bee88a30b1fe5c8f623b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAFF2076941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3391d7a237bab6493c501988d3c260cf837d73724fd8742cc30b76d2988d82d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCABM1315031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c5736680790ebf7497a63cc6e3e85ac03ad74e3bb1c74949c9b1d2cf3eb376a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCABM1396428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa1ce93d5f6cfaa4a645be7a1cf7803b05f02e59315f1887360710c9cf84a2ea. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCABK1238457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x788026ed67af46cee9957507649b90a7c7ca2100d373e41f719b806ba9927e40. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCABK1238285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3dc36da5eeaba2330d4e8d33ad1c64e3a4f7e802decce641e78d4dfec96b64e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCABK1238286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b9e6f509814c509cb3e2633051bbf63ba090338d7f46de4c677884e3c6330bd. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCABK1238287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5167bea3061382e67e3a3d19ecb3855e1b923fa1a250831246906b9882dee9d. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAFF2076921.
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x963f28bf5f746704b5228ccae02ad36c887fda33bbf8cc75ce11d606a8b64aa9. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAFF2076923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x940af3289f11cf39e7c74872ba3a416653f8a5e871e719cc41db6ee817008b4f. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAFF2076929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7b91ded269c020e8b6df7ad1113e62171b096a3f77b825dc344d9e15dfe7761. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAFF2076932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92acffe40a4f3deb5e44b23073401c58b74dcf2b95a16b5de12080d9059ed654. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAFF2076935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b1f8c0e3882bc0120388b3bf1b1504a71d8bfb1fbb5400ada0ca647ae4fe2ad. Chain 2 (Bitcoin): anchored in block 960200 (2026-07-30T02:37:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCABK1238267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcbf471aa2d5daae6fb08294074861169e38ca687f8c61f67471112dfb0ecdec. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCABK1238268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49af774850553a2532c58e834c621a77bdddec394216378d9c07a268c68ae854. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCABK1238275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c9c17d802f82085b4862fb0339fcf1558fa8246260728652a8def4b844feb6b. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCABK1238280.