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 0x182e11cc6eee90544b17f17d1323a889c28dbc85d1659f4fe3cb9300d72c8194. 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/6ddfdf16-ea26-4db5-a347-8f452ed322a4.json and https://artists.proofprofile.net/proofs/artist/6ddfdf16-ea26-4db5-a347-8f452ed322a4.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 0x945be156758cd65cdf1fde4fdc360f8e6b8eacfcbe474e64a0dff1accca7c813. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/FR72X0000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ceaebe5a6e0be3771ef918adcd443ed818f54d2910df72174ef270bd1ab4348. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/FR72X0000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x319b45c1e4ae28e94855a57ea76d4b88da58a769c9dcaf2a65842edfb05a6ab7. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/FR72X0000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd663d5f455f1751ad9c7926510bfda6efefb690a97befe72b68cf0b88c9f043. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:05:51Z), 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/FR72X0000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf33d1c61f97f75b8a9c60e46b52a0d2995258fb601d594c02f534338b83e680c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FR6V81389971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93ccf0de864131b80320c435416c4dc19f906cd998629d9f0c4a74d52b83c9d5. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/FR6V81603935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82b984a499c1b4a664053dcb2cd65e883d5d4121c438bf798888338e58f3acb4. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FR6V81603938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a0981fa4b368ab5da2a91c0c2ac97c0a3560533e8c03b3aece14de25d9a5fa0. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T16:32:50Z), 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/FR6V81603941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75b1d3cd566140dc03e7cfd6bf03ec49fdd47fd106a125879aa45caf8ff68bc9. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/FR10S2599712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x735ba4536bad2669eb3812c9a63de07ec7009434a33454dec77baf2615bbe342. 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/FR6V81021275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe61b4e342ef2690fd81e0165b8ebe73bdda71c24c959903cd878f81ab8e6b026. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FRYAS1005594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd5a38e107f077c3fe6276d6329d9ff05b74a10f2638ceef77c43e33ae48c316. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FRYAS9307133.
Viens zouker - Nostalgie, vol. 4 (Mixed By DJ Wilson)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6bfed2a10a17c072ec0d8c28ae0a7c10993686b72433473970aed3c681b1144. 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/FR6V81837298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0710ad297b7256a24bf69caff2c405df7185c2721f6285f5867d3efa5c571db6. 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/FR6V80217203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90056d7900a897cfa109762ae5060696445e3f32987d9ed1f8a7e8fcac865b12. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/TCAFH2032881.
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41e02df821272e3216884b05ef0a01624d5fd0f04a524b7ff4d93b56ce7247c7. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/FRYAS1002356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a9e5a7d5a577a83ff51447334f99b47c2479c12b3bec906d75f960731972ded. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/FRYAS9307139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1ccc86489428d0a7e023fa02d6744dc531ab08bc470732228c0b6f5213ba560. 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/FRYAS1003720.