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 0x050c4d7800368f47068715040e7fbef21f006cc5ba0326ab1f9870a25bb86f6e. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0d57dfc8-d872-4b7a-a862-2ce2917f2b45.json and https://artists.proofprofile.net/proofs/artist/0d57dfc8-d872-4b7a-a862-2ce2917f2b45.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Esa Muñeca Me Pone Violento - Belico - Primer minuto libre (FU I Alicante)
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 0x50c5348787ad8a9d7d6f98376301d5033f4fa64858a05e0aa96d80e5454bc6ac. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:36:44Z), 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/QZRP42556811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3af11f345e6cf436ec194350013578bb9a57423867d2782b44af285ab84fa55b. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZWFL2570244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c364b344635b99b5fea974e30ec278a19df746670508dcf78c78ded67406167. 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/QZWFS2560012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63a68af346d7a37192e37964ddb81586896e61b44b89bfba176586abd73799c0. 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/QZWFS2560014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43d3eeb8412844001f47f25c0d427551db0daee77cdc0042a071ad523344182c. 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/QZWFX2562636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x700fea8412015f2a8c093776a90a11113d0127320b1159be2c9543be760f82b3. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QT3F72541249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1f00052a137fbe67143da4a76949cc5adfee338c5efd7eb1906f953d65ce721. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QT6ET2546532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc2a77e490d0d0f933a6799bd9c6bfe0a88b55468143486723f3a5e71c82d353. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QT6EU2541229.