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 0x5309a4ca53fe240fb3bd444b1faeef5551c0e90482edac31ba549d78a72e8490. Chain 2 (Bitcoin): anchored in block 954553 (2026-06-20T11:51:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ac9dddf7-ca33-4a8c-98a6-d07c42b36daa.json and https://artists.proofprofile.net/proofs/artist/ac9dddf7-ca33-4a8c-98a6-d07c42b36daa.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Forqueray: Intégrale des pièces de violes
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 0x0b53c811ec8babb32f1a93b5228cb1e897ef158beaf1c124b4e28b7419c53779. 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/FXR522412001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc045376d22fbbec3ccaee1dadf8f301c9c604f83b79e5a5cb3c40f7996172a88. 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/FXR522412004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57ee778f279ee4581bdabe6eb0ac37d3032d882299928a87e2b8b512c7341122. 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/FXR522412005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae15bd2559aa09a1517c4c05a9bb72083474833e3b0612dc4b9c05a85cf3a419. 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/FXR522412013.
Suite No. 1 in D Minor: No. 2, La Forqueray. Vivement et d'aplomb
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77b26e50a4a866614ca60e02bcc57f9eb1f7aba5acb55f155916e38cc142963f. 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/FXR522412015.
Suite No. 1 in D Minor: No. 5, La Portugaise. Marqué et d'aplomb
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc2f9b740579f1ecc3ee283ce9bd57dec09794e2d85bd5109e411ee448ead5cd. 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/FXR522412018.
Suite No. 4 in G Minor: No. 3, Sarabande La D'Aubonne
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd54acee25364000735695ab28fa804e7fa66c1c1956bcc2e35a7b0bfb8fb0db. 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/FXR522412022.
Suite No. 4 in G Minor: No. 5, La Sainscy. Gracieusement et avec esprit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe160f3cf78205bd524a965d8bf9a7da9ebd6045ccf56adb88f225916607fc52d. 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/FXR522412024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x280dd5fcce30d8b8a606107d8faf9cc0bd98707537e49349fe1673ceb1781569. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/FXR522412008.
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 0xa7cf6249a6abac795124fdb40e839a98b4c6009f8e41cf465bdf3798f667ad6b. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/FXR522412009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc88ebc91cd7ee4a51d8d6cab186d41ff18f4a9d0d5a167095ca25b37d322769b. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/FXR522412010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0e6c80790eea84ac97b43cefd8c525e579d007f6580a87a8021ffef68da8893. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/FXR522412011.
Rondeau Musette "N'espère plus jeune Lisette"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa08357d8d07a0069dfb195be9cd3b1fd97c70c16e2de5820000efc081e0fb699. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/FXR522412012.
Suite No. 1 in D Minor: No. 1, Allemande "La La Borde". Noblement et avec Sentiment
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5633c853cc4ee6f34d8a2968443d1e841ecacf9e8dfabca4a422be24a4815c17. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/FXR522412014.
Suite No. 1 in D Minor: No. 3, La Cottin. Galamment et avec lenteur
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69d236c3811c07c7fccb96ce6ded238ac81cb9e64d7bd5f4dfb0483362f5536c. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/FXR522412016.
Suite No. 1 in D Minor: No. 6, La Couperin. Noblement et marqué
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23452138b28f2fd2f3869179437ba41d512dc16d2584ba661bb0b65ab336d7e6. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/FXR522412019.
Suite No. 4 in G Minor: No. 1, La Marella. Vivement et marqué
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7699a624f6ef74984d373befd7c2fbc6b3ecae339d10b63db25c0f7eff569a10. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/FXR522412020.
Suite No. 4 in G Minor: No. 2, La Clément. Noblement et détaché
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19827fea0d40c50789d4b66f34b84ee5b8c0b7d4b687f0f300535b797926bbc9. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/FXR522412021.
Suite No. 4 in G Minor: No. 4, La Bournonville. Mouvement élevé
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa557ab46f91c3a395d10efbbea7333c258ed2bdbf6ca949d070f058358959075. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/FXR522412023.