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 0xe06d37958afa91e26bbbb6414af4f16295a212865add054cc923c1147586b758. 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/2afddb1f-503b-4fa5-94d8-3abfc9776338.json and https://artists.proofprofile.net/proofs/artist/2afddb1f-503b-4fa5-94d8-3abfc9776338.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 0x0ab0705f1a547433a0b02685ee984b2db25a0d0edaa13765d16e795ff76bcecb. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/ES71G1851495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bcd3a95f7e78315a0cf7078235f07bafc1c62f5d35410ff2d65677ee6a103ae. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ES71G1851496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14d49b6788327e830f7cafc186a1a70a9ced87c57e10f8fbfee6392325fdf7aa. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:28:33Z), 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/ES71G1851498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e140dcb681870394128009a2354df24932eebc85e4d780d7c992e58fdd87d43. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/ES71G1851503.
Me Dicen el Pecador (confesiones de un Pecador)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d5c82ff4e5ce45982d6017ae1613fefc2b4655b06d9bba0f7052c512818a5a7. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/ES71G1851506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2ebff1d229e6d709f3305fde3b46b73c4d0b38b2ca08e7a2958d9ae20a4e4d0. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/ES71G1851508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4aad066375c7c62dd3dfd22fefc3a81a193f54192ed2ba0605ef1d2bf7dcc02. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/ES71G1851509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d154b52a3091a4b568b920ef1ebd011b2b812742e367aaabb1736327f402b39. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/ES71G1851510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf546e50185f257692a2de04fec371d0fce944c3e833a7ada61e80538b42b1513. 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/USUYG1135196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe283273e11b9be021c2dd826e892c795f999e2fe4db90c8baddea33a090645bd. 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/QZNJW2353630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x543faa84e0a95eaf2e741a0b08847eaab21bdec56b7b77b5844ea7189b463021. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/UKU932300349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe283273e11b9be021c2dd826e892c795f999e2fe4db90c8baddea33a090645bd. 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/QZNJW2353630.
Ghetto Latino (feat. Sinful El Pecador, Septimo Fragmento & Nemezis)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7157d946f57edda76199e81948716b7f4a137616ffdd9a8c694f22b5325c60f. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/TCACF1540169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55645227e8027eb0cc4506c5d2b2263f19390b7e8327535ff1053e02496efcc9. 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/QZCE61842375.
La Historia Nos Dara La Paz (feat. Sinful El Pecador, Murie Music & Mr Pee)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4241f779eab9d2bddf87adf50e155eb08d9a85afb42c6ffb4efed66420c24f46. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/TCACF1540165.
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