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 0x6542afd490149a0d4ec36a241016038051637f44265264597e2ccc765c28f3f8. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/44f40331-7b40-49d9-93a8-2a56772ce189.json and https://artists.proofprofile.net/proofs/artist/44f40331-7b40-49d9-93a8-2a56772ce189.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 0x31c770ea47e65497e8612ff53ad9c0e4a0e5ac9ff066f69b4f68de490a7237dc. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:48:40Z), 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/FR6V81730672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88da863ae51d1c882da3cf202755b5eba9e99ae2f8e44bc2f5738622d36abe24. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/FR6V81730677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5c9dc777accb24e7694e01a57332b7799bd950e1510dfd41da9797818734f2a. 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/FR6V81730678.
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.
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.
Granier Music Awards (The Best Zouk 1980-1990)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f144e04bec8a6d27d5a098c8473c8cf9be219f618ec927481c97085f3ff5def. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:44:53Z), 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/FR2X41433135.
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
Simply Zouk - Party Beats & Tropical Rhythms
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ce69ea22a5b122c09bb43beed98b3046f95b32d2fa667501a0534ca3dc6f980. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/FR93E9000810.