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 0x51c0ac4688648069b3e2477ed01633b4177b4502962c00316cf5d43e63495858. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/00133be2-fc12-4948-939f-defcf3589e42.json and https://artists.proofprofile.net/proofs/artist/00133be2-fc12-4948-939f-defcf3589e42.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 0xace6ed91855cba9eb1515138d632e9bb9bc2a7ddc8e4287b43541ca05b169da0. Chain 2 (Bitcoin): anchored in block 958579 (2026-07-18T16:26:17Z), 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/BRRGE7200123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47bf9733136ecf5055ce37f3deddcc7cbcc8572fbdbcf77d7e0c20da869a4add. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/BRRGE7200124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0948efdb766dc96c72b6f2123eef2c6111033274bbfe4269ca619d36474d4cc. 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/BRRGE7200128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2ff7fcbf5d7f082b4edf6977f049cd6e39c7acfc7604623772aec0de7a3a11d. 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/BRVWD1400023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x107c64f3bfb3c5ca4b045d7ecbc288065b4d2c5772ce5fe4eb7dbe6745156f1e. 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/NLRD52420523.
Silveira e Silveirinha: Grandes Sucessos, Série Campeões Sertanejos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83992c7f4463abda60966656054db7342d88dbf9d85d6aabebd59b4c73736344. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:26:55Z), 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/BRMPV0201017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d531cf4a1b5fd18f98c490b49e25fe3f984a59c2264e947c5d5f15b707b711f. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/BRMPV0201019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bb5821a6d9627e2a744bb4049b5933ecded5c1f4369bd697f9a0d8498b90fcd. 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/BRMPV0201024.
Silveira e Silveirinha - Grandes Sucessos
Série Campeões Sertanejos: Grandes Sucessos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab099a31eabef215b4f79c971dc61bf6cc9605cd32fbab22da406ee9899ad5d3. 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/BREMI0501783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6effb3e34c4084ab76e0fa94a401d1a6e4bdfc29bbb0dea40f0201c099a05a3b. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T22:13:18Z), 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/BREMI8100077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeedaef54d6d09994c6388178fd0a812797ee1ed1685c64917f8e65a6ae8eb4c9. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/BREMI0501752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae0fdfeb9cc28e50ffec39d5994ee9255fb91782ce3896dbebfa5699f0a88d8c. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/BREMI0501755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x190fd2900ac669499d40354825db17d19a2f3b1868a1a2f73d353b901a5a6f11. 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/BREMI0501756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x402ce37bdc39d6f6e4cbeec9898dc73ddb25dd61749b04a17051e90e4b377f7a. 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/QZ5AB1952076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf60ed20a36ddced5feb7516105238b9b07b5acf151b770715626d751b3c3b301. 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/QZ5AB1952081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5c573c55b941e24901fb687099061f5204f5fedd92a385992ec8ed7b424aca3. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZ5AB1952082.
Os Grandes Sucessos de Silveira e Silveirinha
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce1483a86e610665400bbc2c18f90af208dbf4f61e69a540e49801990d27f26c. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T22:58:50Z), 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/BRACP0300051.
Os Grandes Sucessos de Silveira & Silveirinha
Brazilian Roots: Sertanejo Raiz, Vol. 37
Brazilian Roots: Sertanejo Raiz, Vol. 36
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e0e714dca1249afb6f623b1be2790087cf7c680bc2152663e024b8668d948b4. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:16:12Z), 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/BR19C1700488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf330cb4fb4eef69dde089753ee1d72c0d75baecc577a6f19224f95c48f1679a4. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NL3M12405757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a3b40d6e73d9b6488c34c0fefac6b00baad5b2f7c00e17b788e952ed02e574c. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BREMI8100069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcb0dcffb110f9ba8a47d6395257c85dd28c0064cd5eb545bd67d84de0c7fc6f. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/BRRRL0400109.
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 0x3111c41be0e53c43689209947df170d1905aa991b900e06edaeae714be20bf2e. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/BREMI8202096.