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 0x63711b725d5390f2d44ff00410300f45f548332dda0b158d91968c3bb929a35c. Chain 2 (Bitcoin): anchored in block 954623 (2026-06-20T23:40:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cb8192be-f929-4604-961e-1a0bb981fb16.json and https://artists.proofprofile.net/proofs/artist/cb8192be-f929-4604-961e-1a0bb981fb16.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 0xd793657999de2b6d1ac87aa504ffeddb4c7726a701b40b447003e68c02feb998. 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/FR6V82509823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x872d665366656726df9b61b098b0480039391db8a11efbaaef73346f72b3d929. 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/FR6V81690617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b29f13862a8c8ed2db91a51d9b45517ccd7a667db9ad31b9ba8d60afc46c179. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FRW511200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x031e2e9a4c9ec7494807b74e37d1ac48c60993e2038bd28a74cbe4930fa736d2. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FRW511200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9028e98e00aa5d4f62705d7247019d84be993e13c16c4bf747814b97629716dc. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FRW511200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f9c1c7ccba7fcdc411bdb0bc00e123e09e37d156b5f8113e9b3359ef2e39e02. 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/FRW511200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6d9cefd9aeb0a63553750ac7a717b97997b6718ae6e64dfbc5358e7a5ad8680. 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/FRW511200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb93acd82063425c4767fcc4ac4bdb7738ceab05a3cd3eb9f40d800835a9a97db. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/FRW511200005.
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
Les plus belles chansons de Serge Bilé, vol. 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9c3e9531419868d27d43481c04d2bb10b734a1c3296090ddfae9a5cb1a79df8. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/FR6V80263717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad554226a7fc8a89901a4296b684a07ae787017b55a96d950b02f62bdd1581f2. 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/FR6V81693888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b73e3c0c0adf9bdde85c131b2249ddb7e6d99482e762b8a7a2e8f67154ea998. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/FR6V81693886.
Tradition & Noël aux Antilles (Toutes les musiques pour la fête)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b6ce1a90b81957c012ead685874af6e4507d94effaeba8144922bfe5286d36c. 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/FR6V81148727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74a83386a4bb5de1705e667f581e29bc1658058a0cb47a895546e60ae58bd387. 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/FR6V89704063.
Mazouk bel héritage - Collector (Les plus belles mazurkas créoles)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b6ce1a90b81957c012ead685874af6e4507d94effaeba8144922bfe5286d36c. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/FR6V81148727.
Mazouk Noel - Pot-pourri de cantiques de Noël
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x136e30ae6e8c02e7d5012b57b665e80f9449f3892f68c3b89d5dee870158a1b9. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/FR6V81148728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2051a77a14fa3d07883e4833aa11b8067f5751dab9ab2cc51a93136db8144cc5. 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/FR6V81148730.