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 0x04ed8f333ba9c7097cd2d0bc6fd32d823f4587ee0b328b9507e8a2a6b0cd9688. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/44e36064-0b44-49b5-a1d4-06cce36d904c.json and https://artists.proofprofile.net/proofs/artist/44e36064-0b44-49b5-a1d4-06cce36d904c.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 0x6b07a927e1659d5313a60472d44895bb2ba26abceb2e3ef340074caae08c4811. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZWFF2476657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b07a927e1659d5313a60472d44895bb2ba26abceb2e3ef340074caae08c4811. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/QZWFF2476657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe0bbbd3a5a7cd0df7373e6cf1898fe1b121eff2779fc8788c541cb531ac4cca. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T06:42:42Z), 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/QZWFV2443764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdc74b8eba67ddfb2708078bcfc56cf22d1f5b4e5548324a1fa61cd8cf08a2de. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZWFV2443765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17662e9cd7345738d5d97b1350a643b8ad2f5264e91d5208d2e1273c94bd6bf1. 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/QZHNC2586558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52a5e2f602ef1768c47c796f4e4007920c9a33c0804273ecc6ddd215652a8040. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZMER2596828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83d244e30d24cfa2974300e9ad3a30ba337a8d764da93de89eb0a9fa2ea9b95c. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZWFE2590027.
La puta sociedad (remastered) [Special Version]