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 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 0x8f583f17ae597222b5f4e8e0e23525875ab056f031f4ef36446c16fccb476a0e. 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/6d23dfba-e78a-45c7-80a0-ca5d17399d2f.json and https://artists.proofprofile.net/proofs/artist/6d23dfba-e78a-45c7-80a0-ca5d17399d2f.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 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 0xab25c6e1bb63ae764113ed9b8c7efd55dba4f491f7f23d5f43426cab2349683a. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/GBHCD1609491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e2b5138e486d3ede61ef3034bc7b9290f37716a9ea6c590617c8a63b9e24fb0. 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/QM6N21926028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ad552e0708393b1ce67ad378e882e20197aff470bd938a4079df6fcf67065e1. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/QM6N21926031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3b55a4d0018fc0fbea38fa5234b1cce7b94e623106b630f900f0167251f3531. 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/FRX201730100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d1e7f0efc28b35b8e62ba56cc0610ea113a90f3f49490ec8c2ce9809b80f17d. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/FRX201730103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84717f813a6af087596ae457793aa4089b6ea19103d816b4b8d02100339cbc20. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/FRX201730105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0c182e84743c88873659114ba150590855934f3ab1a298a3491e0b1dad922d9. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/GBNRN1790552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x412672ab03dc688592d9234352a21b61a79766189500c768138d8a7fae46ea50. 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/GBNRN1790553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76bd86e38a387b1b60f61c443654aaf8f1b10fd48109abd2d554b93be6fd2bba. 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/GBNRN1790560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e6b39ccabab2fe0be32900119554cb3f79dfa45c5dc12b532e19a7f9d036b44. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/FR6V81137630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b52c8c1fd7499151afb2a133c41c15e5e22abc51caddf73cb1a377a428aac08. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/GBHEZ1802978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa31720e0f0fc945405bbd976622a82c463b1cd80866e73515a0222d3fbbb1fc4. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/GBHEZ1802979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e835cd43d71c6475f00f1da4cdb9cb554c882d4c608b8ce153c11f4dc214988. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/GBHEZ1802982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x719fe00966dd1d402796e7544fb3e2cbdd2a238c7a5aaa93d9e1004b5946e795. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/GBHEZ1802983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb73e144a5180a6f10c600dcda291ef56ebc35ba84b0a09376d60589d24a31526. 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/GBHEZ1802980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd46fb4640487e259dd6eee29d5477fd8694756aed98bba16f3e2c4656faf10b2. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/GBHEZ1802981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e835cd43d71c6475f00f1da4cdb9cb554c882d4c608b8ce153c11f4dc214988. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/GBHEZ1802982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e6b39ccabab2fe0be32900119554cb3f79dfa45c5dc12b532e19a7f9d036b44. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/FR6V81137630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6546633ceba2eb928951d480f287fe8a0f7b2ff7a483b95eece6201b132b5177. 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/FR6V81137631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf311b0b73c639f41babbbde4ba27b02efc56b982341652b43e38e1408cccca5. 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/FR6V81137634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbcd031c4c4cc75398b6fae326ee018c50a91192ec1f1a264d3fec57c65c7032. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/FR6V81137635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x828912e822c4231e86a39c15de63a37f55809c90090be182e70dd532cea1a304. 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/FR96X1657870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa09f7dab26b5eff559d68de0fcca3bb051a9dbb0fa9e6bb11ac0c89b2cac500. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/FRX201630553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd32693d8e7472c215cf2e3c7ecb12d4cc01767aa07b8c021b4fddc497d78db49. 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/FRX201630559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d904af50b3f5920aa3b3189badeefc6024028e7b3da9265be250e6630730ecc. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/FRX201630562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79e7f6abd03bfd2ec4632769482b778115ecad383b9b16a8b87f03f40211dbdf. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/FR96X1712115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda5d822273ba283bdbe4ed4254d8d2a320fe1ffa7ff80fb273bfb05963a936f1. Chain 2 (Bitcoin): anchored in block 959026 (2026-07-21T15:38:13Z), 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/FR59R1914743.
ABIDJAN 23 (Hymne des éléphants de cote d'ivoire)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f7da94b3bd11d078d2d72c8e58c321a100415220abf9d6e9faf70277055b1d2. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FRD651400022.