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 0x48c054f467392bec4f86378188a5306ce92a2d9d452aa07eae9899c957f567b0. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/41bd1531-2f6f-4766-8e5d-74ddf8658466.json and https://artists.proofprofile.net/proofs/artist/41bd1531-2f6f-4766-8e5d-74ddf8658466.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Suite élégiaque: VI. Regard face à la lumière III – Solo III
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 0x77f56cb192e0dcb3c44c898f0483fe712d3ffec8b6df1bcfca968c16c77e1982. 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/FR1P70600380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10256a45d5441966fe7370b848634c58954c78ef20a44505e8a706b1e36d0a91. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FR1P70600390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61f364823565b839c876f4c023dab2323551b888f37625b495ba92fd21a7e735. 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/FR68U1710010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf033edd39faa6419517ca7ad4ca817140ee0acd90a14bd9d1b6e614627e4654c. 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/FR68U1710030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe89a7b3700d06b4bb267eafb2a0ea2ad1637a03e234452ea313e258f4a9d13f0. 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/FR68U1710050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x523debbbdb0d1ac73e3c81e81bf409d0e39c71badb3e29761672d0d1416c8af4. 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/FR68U1710080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88ba1b469bd86d4aacd09fb740d019db5a2ebe27e221b931fcbd07f5be524462. 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/FR68U1710090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64ac9d08d3c90a94a4baac108c4ac76a35f1d221feed02019730848453a1d3fc. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/FR1P70600330.
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 0x323a92042223f77aec3f6c180f278bceac600554a3ffbe91827ecf0e4a7c06c3. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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/FR1P70600340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bfab2b69c8c0fd8e12610b3ed329baf2151d2333a6af50682134e9470041758. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/FR1P70600350.
Suite élégiaque: V. Regard face à la lumière II – Solo II
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a8f4b738957e1055af178a8cf590d979d5801b0f568c1b457550eda80c35ec5. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/FR1P70600370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcbc4f2cbcd6e19fb65f520934adcc47b03363074298c2c4f277bde0a5bd15c8. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/FR68U1710020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae6772e59fa808d75dfb1e7e47f92ac2faef4559b2d197753c54e0c222ad282a. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/FR68U1710040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e5ee7db288e9d8069ac423e06b0c7a7e95e96fcf08efbefe4a8bf2a6f30432b. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/FR68U1710060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x294bc34f173ebc4040c1b8ce5410262f0ce0091daeb993e4ee2ff0507b1b7e09. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/FR68U1710070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bc1a7a0778fdaecb78a32d49cf13c47ca888f25cdd4fbc49baeffbd046efcc3. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/FR68U1710100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc85571bb657c20b4c3cb976ca2412de3c30e0e1fa28e839d2cba27198a939ce. 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/FR68U1710110.