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 0xa44321692a199e184fdd03f10a9af9fb6b6d18c66e5771904e7c2ea61bcdf35e. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/852a5442-f0a2-4fe7-ba4f-b5488ee8ee64.json and https://artists.proofprofile.net/proofs/artist/852a5442-f0a2-4fe7-ba4f-b5488ee8ee64.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Les Premières Berceuses de Bébés avec le Doux Bruit de la Mer
Ah, les crocodiles - version boîte à musique
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 0x1baa89d92c8abe2b26b4e48553d2f1ed345ac94f1391c645d0fad35969a11881. 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/DETL61401881.
Sur Le Pont D'Avignon - version boîte à musique
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96b8f31f4eedfc444f2fec08170a2fc1c783fc5a46a48a51b449833ef7f8af35. 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/DETL61401877.
Pirouette Cacahuète - version boîte à musique
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ca5d99463e6b020459c819597e53c10f740777b216e633d50576cbde424bf16. 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/DETL61401873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96abd2c5b23e3e3fc0f9378f6421591c4304ff1401cdd19d63f73f69ffe592ee. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DETL61401867.
Savez-Vous Planter Les Choux - version boîte à musique
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe73f2a43fb972a5767a211e400a74b2839bc2c12b92d46b5c5747a6389221b00. 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/DETL61401876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5230cec07cfe32d6f3a7f176e44e0199e0342d22a72a3784bb2123419835671f. 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/DETL61401871.
Au clair de la lune - version boîte à musique
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1cda45218f820b2a7f9f7dc2af42df03f9b0a50add3a9953589bdbbf13ea442. 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/DETL61401884.
J'ai du bon tabac - version boîte à musique
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb489a17ccab7cbd72ce507dd50fb6f39e5c5c092a0eea2c5e2cbc4def1379aa6. 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/DETL61401869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfed5b674079097dd46e5bf52fa500f2832755f03f1fa5e7a582949eacf24e337. 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/DETL61401885.
Ainsi font, font, font - version boîte à musique
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbe1099ed8c432b78420c0d3151750261493dbca067e0247c4335ddc23221e02. Chain 2 (Bitcoin): anchored in block 960419 (2026-07-31T15:20:33Z), 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/DETL61401882.
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
Un Éléphant Qui Se Balançait - version boîte à musique
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b8d5b46064996ded6f79a29fab7624e8218044165cdfc0d2367d7ada768c5ef. 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/DETL61401879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78b3c148eeea90a45c184903200a9110162b14f5fe981691e229cfd1b5556fb7. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/DETL61401883.
La Famille Tortue - version boîte à musique
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2daf8a5c99946f37c60499184069be05a5b2251e46c477c1969f0eaae427a0a4. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/DETL61401870.
Meunier, Tu Dors - version boîte à musique
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab35c630d48a90abc77909b3d98d2595d2b8ac061af36fa7acdeed61e91e08c0. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/DETL61401872.
Pomme De Reinette Et Pomme D'Api - version boîte à musique
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1111e5540693bc3f10aa0f05e1000b46caa4ea6bf70356e4d709898b335dcc93. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/DETL61401874.
Tourne, Tourne, Petit Moulin - version boîte à musique
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3078e1988fb245bf618d1086ab4d4cb5d35ca1a15652b907e710fa2c7e9e56dc. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/DETL61401878.
À la claire fontaine - version boîte à musique
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fbca0cf087ab574f06e135f8275e69511dc266097b0de8ff201ebda9162523b. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/DETL61401880.
Il Était Un Petit Navire - version boîte à musique
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77a1d2cb6ce7fff7519849f0825af63fa92fbf485a9241fd6ee777ce24136de5. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/DETL61401868.
Promenons-Nous Dans Les Bois - version boîte à musique
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9544da9da89f7f783a4090bfe1e9e3752f6b52c02f05aa2c1b2546200403f4a. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/DETL61401875.