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 0x2aa3d8d3f25ff63c38d7433f0e03ac7c9cc979256cf6f59d0641e2ca0bc36957. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0b14e3e7-651a-4801-9962-aaa6d21e7ca5.json and https://artists.proofprofile.net/proofs/artist/0b14e3e7-651a-4801-9962-aaa6d21e7ca5.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 0x04d04ae5cd3cb626905ff5e02bfd6189049080fc07673b1ce261b82b7808dee4. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BXDFR2200030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13561b85d922e6b49c4840498d0b9ce9a46dab0dccf36515c3549b18bf636b94. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BXDFR2200024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x465cb57d3eb050023e21da89e7925b5c27c63cfdaf1501e359543b93aa3261f2. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BXDFR2100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5b96b92d7e508407250fc2b64352a6c5289013937631ef9e9dbead76805c378. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BXDFR1900012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7e52ee80bbcfbfa3163e809bd05bd5291d14915a48aeaf5efd72b35ec9e67b2. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BXWZW2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf46f83ef5efaad4bc870e47d5f62f7834cc90893a4262cd9018d60ea40fae142. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BRRGE2400082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7e52ee80bbcfbfa3163e809bd05bd5291d14915a48aeaf5efd72b35ec9e67b2. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BXWZW2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7151a8e477dd0ad9022fef5d510d97f071299af583c8964c0428c06934152286. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BXDFR2300017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x290feba558eac896f22a41be7ba49050aa62891d84df131ea3e7b3f3b0f8f9e4. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BXDFR2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf432c04614dedb27ab0a8473c55860b9355870bfaa18d1029d6d8dcda593aa0. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BX0151900034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea915081aa5aa4d9ee65530a3574d21c48d9b412dcfb7ef067a3f40f743530e2. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BCIW72200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea915081aa5aa4d9ee65530a3574d21c48d9b412dcfb7ef067a3f40f743530e2. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BCIW72200001.
Te Vejo em Dezembro: Som das Estradas - Sudeste
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d69900b544982e0e21f620e111c95da4131ff918aa0342f1e653e33d387c6df. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/BXDFR1900023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7247605347ca7e8ffe15957ac0b88fba81554eb13bd51e1a128766899ff32785. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BRRGE2300823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51a9f1a8422ee932b145707b429693b471c008694b9e0c8ccd0a8567ce3689dc. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BRRGE2300817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa419a10000b7a7c6e9452ef2571bc05afdf0773ecfabeabae592bc80ea3b282. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BRRGE2300819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7247605347ca7e8ffe15957ac0b88fba81554eb13bd51e1a128766899ff32785. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BRRGE2300823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bb3659a0c93ae6e6f08a66d4d0e2dbe7fa97e8f16f0a9b26e59153d2effabf6. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BRRGE2300821.