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 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 0xb7008298bdf68254c5f66230e8f62f491bdb66342e0d983bb4bac4b7d07213d2. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e1d0978e-4e63-4d78-aa85-dd2d15df47e9.json and https://artists.proofprofile.net/proofs/artist/e1d0978e-4e63-4d78-aa85-dd2d15df47e9.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 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 0x5195b43551bf08b0d19380c5882fdd0a000c0f3abefabb151568941cb1aa9272. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZGLM2123247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec4e2bfe50d5bcd9bd2185cd6a8ce1bcd1b8e492c234e387adfc46c5b4a5066e. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/FRX872400421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa84d4f1cd41420c6dd65d024d188f95ebdf491a2805970f22ef522b2a7b52199. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/FRX872400424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59c9fe35cf6bb192b806d5dc79066e670eed8645fd589edb9af05614ea891b87. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/FRX282430485.
Mosaico Diablitos : Recuerdos de Un Amor / Volvió El Dolor / Cuando Casi Te Olvidaba - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68a5d9761dfba5fcc226f45f3c566abb7dfb8ca5d847879eac0de3bdada44899. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/DGA0R2438805.
Quiero Enamorarte (Llamado de Emergencia) - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96b7dcb7ce3ae7e467919c2a2732697669bcd137a2030443d6c94000b4a17bea. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DGA0R2438806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0c3f68a7170c9f7cfd5162c26b37c2394f60bbf02affeec657185201b6b4caf. 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/DGA0R2438807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaa447222a139009e2372f4fb45ee2e0d72e441df3093d308a3cf8369ef255c8. Chain 2 (Bitcoin): anchored in block 958498 (2026-07-18T04:54:58Z), 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/DGA0R2438802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a617fe69d34cb45e8e230c9b125ce03018849b3d0906532a61d931aad4e1625. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/DGA0R2438803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bf0fbd2abf4f31d6ae91085398658767dd0e456d87f637bd317b732f3e18983. 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/FRX872400425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa84d4f1cd41420c6dd65d024d188f95ebdf491a2805970f22ef522b2a7b52199. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/FRX872400424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34253642c2b574f404c1ac027cb20a6ec06aa24e39444d2423efd4a5b4f924e4. 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/QZGLM2559955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3d5ab8d9e907320af026fadffa7d2a873e33217789ba2d9d75f207df362dc45. 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/QMFME2450129.