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 0x9f53e58d880767b1c249012aedc533bb7eb4eba6d3aa346447432f21df6baa17. 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/9d5b66a1-e772-4072-b54e-94d9d08d36e1.json and https://artists.proofprofile.net/proofs/artist/9d5b66a1-e772-4072-b54e-94d9d08d36e1.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 0x0cab226f95e842c842921b1b6169b64804c23d6af3152ae7276d99e9b939eca2. 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/FR2X42246741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b13ac8416a7a39d9ce4bd6e1738a5775929307fa1f35d10908a577bb94cc949. 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/RUA1H1879716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3115ae6e3d1bc5aeaf22ca4363f7b9555bcbf10d70c823818b6422e7a4ca9989. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:36:55Z), 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/FRX202267879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42f5292c5e8512798bf69284434c11a92b037b9b5d54b3e88814491d6e5b6705. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/FRX452232884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fce9c1c3cf233348ee6a369715397cb7e39aaf72482daf4ddf5b65a2c5d9755. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/FRX872240995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8d642b4d91860baea6fef64cc6e0ca9d0c7038a54dd5c7231ddc5ddd869694c. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T17:27:35Z), 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/DGA062296733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdda8cd3f3fda3d97793fd710ae30ed34bd9c06a95a6eb8b3693b9a3721fb2149. 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/DGA052204422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4729f2b46610e1597ba52c195e59c04d5db0ef4e6a3db37ea099f0640da8c1c0. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:28:58Z), 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/DGA062296734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe43dd99e7d6b13a525c2dcaa0a04c7c7a62efaa645c81ba81256293b21e075fe. 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/DGA062296738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x511680469f1844e8ba932b1bf484d4ffcd0d9911557389af55433c37abad9022. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T14:35:44Z), 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/DGA062296739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4729f2b46610e1597ba52c195e59c04d5db0ef4e6a3db37ea099f0640da8c1c0. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/DGA062296734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fce9c1c3cf233348ee6a369715397cb7e39aaf72482daf4ddf5b65a2c5d9755. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/FRX872240995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe498e62ef8458f8d12bfcfd722c66fa7cc25e7656e3e1da9f006f2e561aef98. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/FR10S2278269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3582d034d0fa42acaff82f6ae735f034a7c06f57f88fea3e47bc666fee8faea. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T01:52:51Z), 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/DGA062365981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72298f39df3bb62b4635cb3c18ad053f51ff8e8c6a1990df4731c6de3ab59b63. 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/FR10S2446939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2976fc5c1f71e95dbe1f2867523200e7068ae7b3ca3196307d971fa15348f60b. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/FRX762426742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbafd3f9f7c2fec82fae8d4e9a82b4a2e6d2274c8c772a7d5ae1fed901f864278. 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/DGA0P2464939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5e8da885ae4f75ddea8fa5ef1f57939add8dc5c633ee3e7e383b9513a7b8ed9. 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/DGA0S2439352.