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 0x8542ad5e2aa220db28f7fe28d0652fdecbb9eb71a2fcb08c8c7d6a8b3f706fe9. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/73e0e1be-9901-4973-a566-85493027a946.json and https://artists.proofprofile.net/proofs/artist/73e0e1be-9901-4973-a566-85493027a946.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 0x1159e84d9617de2ecc06d36919db1ace61f348c5182da4115dda2625997785cb. 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/QZHN52072819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf562db907f99614f79f9e500f06fb78b254eb0b55414d9bec4b68fcc51f6e1a0. 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/QZHN52072821.
Breathe (Holy) [feat. MarySarah Menkhaus]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x319cf1a6fccac8601346e3ea9264237d9c188bd73a73113a19e22c0d11986528. Chain 2 (Bitcoin): anchored in block 958369 (2026-07-17T08:01:54Z), 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/QZHN52072823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa824f9bcdf16b3790832501a438dd53c2f33a1d2ba7cb82a6c49cb81bfe8e842. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/QZHN52072824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf81d9a517ff49d500d1eee47d56dff6b224052ec8d689f4bc75d9cd4c8586be. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/QZGXC2200327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92f8aa53748792b58eeeca0f5a71a4e2aa962d286b3e5d994d5c31637e48b5f7. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZGXC2200328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5589c85d272325b58617d1e3c1741bbd78e975075918471e6624af0c58ffa7e3. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:04:45Z), 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/QZGXC2200330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90474145c43c8c0bfca672f667b5e35bf09abd71b565f8249a389aac43ba661b. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/QZGXC2200332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0232198dc23e84a4995e21de5c4ef6ff7f298fafc8cc4351f367096d23e32430. 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/QZGXC2200334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b2c4e80e579db18e7c1c8f4f66224df6d68d4c60cee783fd03b4e3953ffeabf. 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/QZGXC2200333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2e124ddd024e302ffa6d291e26b92ccc14c90f9d3a182b625524c14e2f0d943. 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/QZGXC2300240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1e691ec3558dbbf92fc882a5c531fa10f0400c6bfe30f9916bdf336f11f4477. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T08:52:40Z), 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/QZGXC2300718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5ce310253565897e5d0d6f344f3c08297106883aa6d8cfa249c2ed5d9a8187c. 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/QZGXC2300801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd27a212559a5c893cfb9a0dac4624b3a7adb010a69807d56e57bec39956743af. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZGXC2300814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6761ffca900db0f8a757865e584057b369003993f4e664858546ea606f8d5a1. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZGXC2300671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1e691ec3558dbbf92fc882a5c531fa10f0400c6bfe30f9916bdf336f11f4477. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T15:57:15Z), 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/QZGXC2300718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd27a212559a5c893cfb9a0dac4624b3a7adb010a69807d56e57bec39956743af. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/QZGXC2300814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1531bfeb31e7c3fc627019f61d81d885dd44da8e004242d746124c018e48c9ab. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZGXC2300985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9090cef7468a96fee28dab25b4467ccf11fb12cd1f8f98a83d2c4bb23824a576. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/QZGXC2301027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70dd8941cd28f38e2b0c5db713d6f19a7f469623f0306631f9e582ed1c7f6861. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:49:47Z), 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/QZGXC2400918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bf8338de5921bda0a7cf630fe33875ae8aa57bdb7c3545b22eea6da0eb69f4f. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZGXC2400919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe82e5b2679241d6c3881af0b2daa3a579729bd03a8e7e19534eadb7a16adcaf5. 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/QZGXC2400920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0920a13bf9368263ed30ea829bbe99b67fe8b8af318c969a200e939841738aa. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/QZGXC2400921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe82e5b2679241d6c3881af0b2daa3a579729bd03a8e7e19534eadb7a16adcaf5. 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/QZGXC2400920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96a11044c7648ce84e537f1caf9560b953aa3406717bc9f574204a5991190ace. 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/QZGXC2401334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x089f3c0791ae157546e1bf21675a7bb324ed82031fdaf17dada1e2a0a3559cb1. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:26:58Z), 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/QZGXC2500277.