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 0x11b0b3f90fe852206c4e5c3840a5c63d9be4e3eca5694c752e0f93bff7c6b6e4. Chain 2 (Bitcoin): anchored in block 953695 (2026-06-14T21:42:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6d5d96f0-b34c-4a6f-bdad-3a1b2b3bf13c.json and https://artists.proofprofile.net/proofs/artist/6d5d96f0-b34c-4a6f-bdad-3a1b2b3bf13c.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 0x6e06e1e70287369d10aff3f6af6923904daf2eb9bc26f8d12f971aac38b26a82. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/FR4P41253680.
Messe de sainte Claire: Splendeur jaillie du sein de Dieu
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf6474c5c1269bde7bdf112bb72b8476e734a0900987112614e932d739d6ec0c. 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/FRZ091500879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23f0cae8be3921c0664b0dd0924b1cbbbe308d3e08dbe0fc5f00459dc6abccb2. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/FRZ091500952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe9a02e61d301832790b77e8d5475243561055684dd31026137b6d3727324092. Chain 2 (Bitcoin): anchored in block 957198 (2026-07-08T15:54:54Z), 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/FRZ091500880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01d435eb3f8919bd13393265a3cf1365c930136b2d427dff8e1b025a5a488d5f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FRZ091500928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa90b18266d147f19f4e2c7ebbe012ee43aca08c38296546c71c6605dac1ba4db. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FRZ091500906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x360e022880ebd69c0366dbe11ed1390cacdcbefc248a893e64d7cd43d57daaa2. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/FRZ091500933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xead83eb20bcf24c6621591f407968c091ad4c5b324524bb3e23eb0eb9416ae9a. 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/FRZ091500889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80af65844818b221bf4bd7c652a528fd94d525d6093f20290aee2cb27179fff2. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FRZ091500893.
Messe de sainte Thérèse de l'Enfant-Jésus: Lauda Jerusalem
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7c9b20953cb38c7a380f81a8a0b73801857fc6a75f6236c7e6802da164d856c. 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/FRZ091500915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9c244043d6966631cfc3bf06951e76eed012856e29f7a4aeae1899b8f9054cd. 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/FRZ091500916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fc0c1790d3a1492b2424961e8996d43b323f4f0cf7db262f5ddb7951ba941cb. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/FRZ091500895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d537fe2e4ec2c90abe515de965d9da8bf075467658b007d15161e2c278e3931. 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/FRZ091500896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14f2b93225ad3130ed0a229d3f6c9705955067c80d558fff79ca16b20b83bbef. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FRZ091500918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd115c916faa163d0d258f17ade11b14e8bcc9c9a5d30662783fdc4ccb15a6cc2. 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/FRZ091500899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa5c7d87a583b45d5c96518ab4a61dbb3c89563b173d1530d6e9338c802ed638. 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/FRZ091500925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c9bad8b72f35494ffcb275e42badb27890dd3ad2b5dc952d6cfd7c645accef4. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/FRZ091500926.
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
Si j'avais commis tous les crimes possibles
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x395d252255f908029705ab68bc38ef970d6b6cc8163ff4345a829e15ab197658. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/FRZ091500903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13ed0eb67af2177cd3acda30ba1c496b21e835f4877b8f526eba07866395704e. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/FRZ091500897.