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 0xd1914df46a4f3bd6243129a78a512e54b951577f1b0b99a21323932d47552205. Chain 2 (Bitcoin): anchored in block 953791 (2026-06-15T13:40:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dc212bbb-6041-42c1-a672-7be9998c44e3.json and https://artists.proofprofile.net/proofs/artist/dc212bbb-6041-42c1-a672-7be9998c44e3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Los libros de la buena memoria (Versiones indie I)
Los libros de la buena memoria - Versiones indie I
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 0x97f388842488a15e9f6fca8b1ea01f566c7eb7c372127a2286b88e8df727f35e. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/ARP5F2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae4bd80805d5dbda63e32781f970370af03708809fa0752f246cd787ccab113f. 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/ARP5F2400003.
Versiones indie III- Cíclopes de cristal
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e4a9ecc2e6cf1810ca87675164231744eaa5557dcbebd7f69c521a7051df775. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/ARP5F2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a9455127b80aa9f307b75d52e69e058c900cf0a513a5b0c9ad96bc859da2260. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ARP5F2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x453e0f8deb5c2c52060875ad27d3e3062c1f6d13602fe42fff5d755f5878b67e. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/ARP5F2500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed2f8e138bcc926745f4f58d30ad70e2474d7c1f63de06aff14a363e0d42c8a8. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ARP5F2500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf2496b6de9649dbaaa962fde50f3e9a8dd7fd92646f3d44558dcc1d006bcb38. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ARP5F2500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6414fac890d65d272c2cc1aa802be88a246d3c5c61dcbf537706bef856c21939. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/ARP5F2500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3846a958991d0bae7d739fdb5fc6aa31689c1e9f80a915156b3ca6750fbd4b07. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/ARP5F2500006.