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 0xc003d2ac438ea17c80fdecbd5e813f372ad7d815313898f7845dc26c91316371. 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/b91e5dd6-71fb-4f55-8277-477f6cacbe56.json and https://artists.proofprofile.net/proofs/artist/b91e5dd6-71fb-4f55-8277-477f6cacbe56.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Chansons rigolotes : Mamadou avait mal aux dents
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 0xf2474a378b91252e00ca11f078be70b78d094c358bc7873c31cff3d8bf0d3692. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/FR8Q40100011.
Chansons Rigolotes : Pipirouette Cacahouette
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67063226261aeaefe84e3d20219c91e902e0733d657c78c93e3b19328aa94fff. 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/FR8Q40200034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21899771a7c67a03bd704029d41647bbc5124809eafd604b5a5f03ad1c2d2587. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/FR8Q40200051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6451063963735fea9654f4eb3fcb5bf328b373f69629ad261474b2e26442a4df. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:12:50Z), 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/FR8Q40300060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa88447d48fe14b9cf673b8a0810fb3ea8cbfffc7ef6e7ad4e25f4d3cbe0a1005. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/FR6V80703941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e5947a645fbb63f779fdbe0a178d2993dfddac648e62ebe06e754e77b0d977e. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/FR6V80703943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41186bce75250e628558db713bd6722116dd37d3ec54dbb7299120dc7cc60627. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/FR6V80703944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cba40bc355043cbf74d2e93e3fa3a6c95298382588d26581328804dda02e879. 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/FR6V80703946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6604e15020174f0fc8e462b80d02505b0bafcaf6987d504eab0a360272214677. 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/FR6V80703948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39e13bb16be8bd2444b8365904355cd165292459ce6d0ec918d7a1902d6e3ace. 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/FR6V80703949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f01ffc5549d3021d6b23d67c51fe3f59be46556528ed9b5f6dbee946254f22d. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:55:52Z), 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/FR6V80703953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93476343df6c4ce86732d30e7042c2994f48ed7f5167f68da55d102da68b6ee4. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FR6V80703955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc943871c859aeee080595d0f971e09fa1fc346f96f5222f418ddf4f571096f41. 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/FR6V80703957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2762cac3fdd02a9d969eb20abbc16c98e33a387042ceb6f4ffb82ed6b6e0f2c. 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/FR6V80703958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedd52eb07e266d69fc8f8b8fdf9b39fe9474896fdd5985c67715f4ad070f7475. 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/FR6V80703959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad7e2b1aeddc8cb0e9b7d8342e7f54f0547846f93f6e3ca3c5242358ce911440. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:09:12Z), 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/FR6V80703961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80f2ccd2223a0e69f1ca721f39e37938f8f72c746ba5c4d36f0e60560d698bf9. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/FR6V80703963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6f519e9945846fc2c36a959c275b14b7af6706d8c4f963035edf7faa6d30a9e. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/FR6V80703966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b7ff23fb42802b5b7a39e5b339bc836838914f6e0b2542c53b34a350fd3dca6. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/FR6V80703975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef6879388f4cc9056d871f06ed315f84e9911b1fd7b417f8ca01b16bcbdc6175. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/FR6V80703977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4a5d3498d4ed5c01e7a6b34485606999878e6c092eb62324868b1d1f61d869a. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:20:57Z), 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/FR6V80703982.
Chansons rigolotes (Vacancias Muchachos)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a620ec9a89067f3900f95525fd5bf7b95a392a5615f16df52ff99ab42027edc. 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/FRY729900354.
A veli velo/ napoleon descend les escaliers
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd24c2f8a68f5b61af2b36173da0f68dbc8cad458b7072f6c6958980f736e1cc5. 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/FRY729900359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x290cd371de1cde558313f5730f71041dfb6be8726741b6ad730bbbae9d18924c. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:36:18Z), 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/FRY729900361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x449d354cb16c3ac9a471c198d2590cdd4f207b25b1a1d8a9fd5c353b270f94ad. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:54:30Z), 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/FRY729900364.
Chansons Rigolotes : Je ris de me voir si belle en ce miroir
Chansons Rigolotes : Au camping des flots pas très bleus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56c645d5a5ad94045703bda1142a8b35b00d1afdb3b9c96141ea650fc6e41fec. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:58:48Z), 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/FR8Q42300033.