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 0x335cd43eb90e686130228c9eed0de6fce49f6429fd9b2560b40b54ffb81281cd. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4ea19636-3bb5-4ee9-825d-1f000d8143c5.json and https://artists.proofprofile.net/proofs/artist/4ea19636-3bb5-4ee9-825d-1f000d8143c5.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 0x50ae689c392afcc7d7b333ed34babdb4f0b1ddfcb1d3301e52a488e4d60a5080. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZTB92566519.
Confesión (Salmo 32) - Versión alternativa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba1596abf57c1a935e912cc737624bad0127b73019c2a98b044162b486ef7970. 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/QZTB92596215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39fc5ec1427a7203847275cdff948a95117f6b1d032f5d373708b772d5aba39b. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZWFJ2545387.
Como un árbol (Salmo 1) - Versión alternativa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5f1d038acfd8782165c626b25e6cc01055ee44c5dad3da6a0423e5aac4338ab. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T07:27:00Z), 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/QZWFJ2547769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6992ec4a8ae70c6295971e5e5ec16f0019e8584b19168f9497cb9e15fecd8d4. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZWFR2592590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ffc3b61a931b9d82039d32a64bdccf7dfaa0dcb69cd38b0074cfda6b98db5d8. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QT3EZ2586447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe758912963bb83e636c670e5c9960e458175a588a24b5bac1490c9f06ec0dd71. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QT3FB2551835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x813dcfdf267e672f621faabefe98f8ef2d3e32a8add1a0b421e95337f39a5e13. 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/QT3FC2545756.