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 0x9ab277d4cb56a553251b151a2636b8dc0935dd574ddb6012ea641401a73fdbdc. 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/fc619f29-8b66-4184-9cd4-e1087f0602b4.json and https://artists.proofprofile.net/proofs/artist/fc619f29-8b66-4184-9cd4-e1087f0602b4.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 0xc3a22b30e4e7ee81d07524f9579fdb0460db01c001dc8918f5fc99c7c2714cb3. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/FR9W19300093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ff363f763b71bdf21072b7cf0347d009cf88bb447f2aa3fde7ae086c05ee1c2. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FR9W19300097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7328b3ec9cc4213c06a9985c2441e673975902cfbb8adf7e499b6c3a008fa0e8. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/FR9W19300071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d789da37ef9c215e8a776057a0288de442c239cf6ac990f9dd891209c179833. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/FR9W19300072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a6e6f59dba7371840fd15368f063b45e566df0b7aec283c5d418ddb767ce63a. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:44:35Z), 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/FR9W19300080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7da4fff75c1a7cd2ae8e3ceb3af231b34ea2a501f34c7a51beadb2e16d9fa15. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/FR9W19300126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x384b944a4bde18d53b826bda4dcea94df564f396aaf6e1cf3ce9c798847931b0. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/FR9W19300127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5bfa10b49d65fc85aa35854af3e266dc4bb6fe286c29bd1f3ca672ab2202279. 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/FR9W19300129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc6158cc41b7b10fb22fcbf0b6293cddad65645e7571657c89bcdd1cb666ba59. 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/FR9W19500130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2015f9e0618b5024018b5331c6805a23cfe40e5211d83743f8a9e74714a1e6a7. 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/FR9W19500136.
Chants d'assemblée, Vol. 4: La majesté de Ton nom
Chants d'assemblée, Vol. 5: Tu es mon Dieu
Chants d'assemblée, Vol. 6: Venez voir !
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ec592a53171e47bcd501940b79f47a96e0f88974884e394eab02b87e472d8f4. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:34:47Z), 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/FR9W10401204.
Chants d'assemblée, Vol. 7: Allez, Dieu vous envoie
Break Out into Joy ! (Songs of Praise & Worship)
Chants d'assemblée, Vol. 9 : Liturgie (Messes et cantiques)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f443195273533feca7eeae0b1cf35fd35608d30c022cbc2953dbf49f3a57963. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:38:51Z), 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/FR9W10909100.
Chants d'assemblée, Vol. 10: Ta splendeur est chantée
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a89003e04f9ad5d329c46e13d63b87d9bf27f2a652878d8e664882dd53101d1. 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/FR9W11010520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aa52f9d277647d79b4a30a98eb9a0fe3dbb12a95cb047ad7edb5c9a5e9bf90a. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/FR9W11010527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21428ad1e8b8667669db973c1a032a02f4cdd39080429f97e969655fa08f634f. 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/FR9W11010528.
Les arbres vont danser (14 chants pour la famille et les enfants)
Liturgie - Chants d'assemblée No. 11: Alléluia, Jésus est vivant !
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb06a4e196e0f98097171e9b10c6e0c154000df6cb31373038808763e685939ed. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FR9W11218858.
Chants d'assemblée No. 12: Tu es notre Maître
Bénissez le Roi des siècles - Liturgie (Chants d'assemblée n°13)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3affd610c1715d7eae26acb47f57a866e66e47422a8e7a038a51b292aa9919bb. 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/FR9W11609179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9856a7a5d1d5dff79944640ae6090e6b1105698c56fdffc6b52367835ce72300. 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/FR9W11609180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc04025d52616b7eb3fe7a8342288ea823521da5abcc80b52373d3e64c549456b. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:52:27Z), 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/FR9W11515474.
Emmanuel é, Cadeau de Dieu - Liturgie, chants d'assemblée n°14 - Avent Noël
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a762878bc3a4af1f2f80fbff0f4d1b3ffb233d2f87510ed5cfbacdd0ca1dd80. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:07:44Z), 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/FR9W12101541.