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 0xbfd9da34fd32e33d793206889aa511d1ee664ee5c34f1717de6e6176e85898ce. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/843bff86-4bdb-447c-98ed-fe2e276ac993.json and https://artists.proofprofile.net/proofs/artist/843bff86-4bdb-447c-98ed-fe2e276ac993.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 0xbf495cadbed44b039670341aa95f14ed5cfb3653257d8329eaac1a54b842d71c. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/QZGLS2354499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x348b1de7097cfdbe886ef326f285af346de739a4612363aba2f2d9c2400c4b77. 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/QZGLS2354518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe94e0700b91e868ddef703b90b85a023dcf4ce52042a143ddffa61d484eb9701. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZGLS2354522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1087220fd7a635e74e8a8f72bccebf124f6aeb9674d4734ed9259cc2b15b9266. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T15:59:32Z), 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/QZGLS2354524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca7873521123cda16e548d32a73bd3aa83eba5656a73a7a9f7ef38b52cb219a2. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:31:51Z), 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/QZGLS2318863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e364f7d353cfa4a6fbabc3c3ac7197d4db6d7ff616769a11bfcdcb6e13a3d22. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:22:40Z), 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/QZGLS2318865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95a95319243558fc069ee93fce2bc2ae27c9794cb1dc26fa8c72bbc61e5f419f. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:11:58Z), 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/QZGLS2347208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cceeedd834eaecbb067d7360f9dd9a268f970603eab7716841f404c8a6151b5. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/BRBMG6000013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x262f4e3966f285f78593a04a68465fe38404bb6a5ec58f48b37d6ffc59f20f62. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/BRBMG6200043.
Memorial Irmãos Bertussi - Edição Histórica
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x307b784595359591c8b42251f54826a7ced4d612a3d277e2cd5769131535df80. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/BREMI0800084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec8d08fed2f747b36902bb8cf783ca0a2964ee40c70460609be01fbfbfb5e102. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/BREMI0800086.