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 0x7b59d0c4e4066c956fe695588661f4b9199c03e5ba4933418498b3d7c6902ba9. 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/e3713bc1-1581-44dc-9752-ed9112e62415.json and https://artists.proofprofile.net/proofs/artist/e3713bc1-1581-44dc-9752-ed9112e62415.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 0x54f69bccc8718a2c9709f3adbcfbbe5651d2ca49de96ed5a5e0458fa5239e54c. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:45:58Z), 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/QM6MZ1493551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a9bf39bfc08929daa97793f71dfa858ede062ad7f9806b3a2abe5db89d6a371. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/QM6MZ1493552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ad25d4f2ec89197eedcc8db23764915a42a257efa41c233866ebd059ead7490. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/QM4TX1749367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa30c267d9f73701df366fb04120d7c34ce1a6ac4cf04cce9b318f961a38381c3. 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/QM4TX1749370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2589520fac04d3474ee14912b56ff3350e4e330a22fec850c822e5d0db3609c. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QM4TX1749378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8928960c9d12a72976d14a34c781429bde10c678229c98752c4e9ee638644f89. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QM4TW1632563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa17f83524df38ab5ab729db472e9c088f252083e790352d748734931c0638b37. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QM4TW1632565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd603bee92c88aeff8fb3ff35dba92a37554244a02e70feb0cc380bff8f209053. 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/QM4TW1632567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb5255ff10916e891e2d9af8ff29f201767c27437c73d7cab5c2ce75ca7633ac. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/QM4TW1632569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e29948452de244ebda7848e841aad2add98e4fbec4fbbb0ba9eb53f34eddd01. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/QM4TW1632570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e7d23c0380b63c791981aceeb40ecc78b7b33449286486598c4f0712c6e6db9. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:32:12Z), 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/QM4TW1632574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98191b4e07a7cb364ddbb8fbb4112989a18657ed0f67cff15e40086374dc04a3. 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/QM6P41753764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40bc7a8db8a6ec7ce7961073ac2440e6b480401aa902393a96ab8edd4ef290ee. 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/QM6P41753759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa464677af5b6e89b4f044af6031d3b05e7bf2d48b15d34f8a24875b2d8fcd38f. 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/QM6P41753763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x129cefb697ecd394ed308284fe21353c15cd2cd80066bd7f92e2561ca7276339. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T15:10:39Z), 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/QM6P41753767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x889928667a83668eff3f3ebc3ececb050bf4d6dcfde48b3a2c8fb6c41f4aea04. 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/QM6P41753772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8b2e02376aa3480a6e5899636c84bf3b7bd05c41daddd691429d5ba77bb4169. 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/QM4TX1837837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x310e56cfe32f968a9821032cabe28c5c7d0cf1d69924fc34d5d0e929b09fdb79. 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/QM4TW1922540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39be4056bbbd97d5afa67ea47ec829916aa75808e7d8b71c7734c3aae8a98eb1. 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/QM4TW1922538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b5960695d4e4251bb2a9a5b1813408217d460a6845c4e9953224d76ca1d1d84. 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/QM4TW1922536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ca03455524ee131d6b184c1a061fe033f4b94f3c99c266a23e6456af6b3bdcc. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QM4TW1922537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26ff8f292d52a09e644f8473144421e971670ad1a466c1510ee976d445cf3a14. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QM4TW1922544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eae055bba4233ef0a8cd4981a42a4969f01e67482fc3da8960a45ed011516b1. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:50:59Z), 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/QM4TW1922545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb29d79e1283a496a1179aa2c03498caef8e3bdc5e6e3fe33cc46d45bf017089. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QM4TX2041757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x187eee066565bef9a866314531503723b2465eaac58f164c9d297c842f79744f. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:48:30Z), 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/QM4TX2041758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e46124c557bbc8001192b45788e37e617bb649187c037b5cfd679cd045dfa14. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/QM4TX2041761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9af2799aa82caad838a0fdb0de995024fa4f488d7ec4c14159621472c4023d0b. 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/QM4TX2041764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf6b0b441fd710e9d1c744950bda56e18d8219f5b4de3170e1661a23a90a3747. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:04:43Z), 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/QM4TX2041765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51710b2f3e86f21825eacfe2406033b1cb57b50c3557ef8ac8fccce2c5553a42. 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/QM6N22091764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c7d9254c825e282379f7ce8a22a7d022ec9a663278dc3191af45a847b049bd8. 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/PTBM12200028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe080cca964508166c427d4f320cc0adb4da21beb08fd34f2e3aee9e8fd219e49. 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/PTBM12200030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8fcb429cfddbb7d195f80049c949a4d320f91d603a186c1984837a9178d943f. 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/PTBM12200031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb89f4ae747fb10eead1eca25fbd1ab3aa12ddfaeead78e161fe6b9405f56eb3a. 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/PTBM12200032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb32d75b261376f12bc698c295b6ca6b5f217d5467a0f0a7ef931c744a14a0dd7. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:40:54Z), 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/PTBM12200033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x240961fbab96ed597779f8a7c8ac3cc146a383f69c419f7cf11f0ee985d2c8b9. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T15:48:21Z), 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/PTBM12200034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x435f126277d1d6e4d3f12616914cb222b3f2a9c3e1adbc01fd1e95f8ff5904c6. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/PTBM12200037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f13814cf6d3abb9728a605d4b4b245d23e058949d47d68cc9da7e61e2e6c8b0. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ES71G2416042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c08292d42b20c28f4b6bf989d963546878ad78c37df9140174927ad205dc852. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/PT0HJ1800017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b65088187cceeec3aedcf30e69b8709f9a51333b50ac3f40fe220de8202f07b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/PTUM72200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9c6f8ac2d5727df56c4a4e90ee90ae55f2851a40828eb3fc7da6032540513e2. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/PT2ID2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c5649fe9fa6e43aca95697bc9e3b9b8dbf449a654561dc60b7c9c4e7ec0f214. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/PTNS11800018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b65088187cceeec3aedcf30e69b8709f9a51333b50ac3f40fe220de8202f07b. 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/PTUM72200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70b4706c01226b4e7ae04d16b9201a99606f890fc87e3589baf1e3b7bfcac00a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QM6MZ1784944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00f45be97af6e19c3cfdc8cb2afd9076d7e38acc7fc9284940c6ff682aa03377. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/PT0HJ1800035.
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