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 0x46b05168d5c5ec676feccde62c161b87431da919aaf9275711e8a702abba082f. Chain 2 (Bitcoin): anchored in block 953791 (2026-06-15T13:40:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dec45361-a8dd-49d7-953c-656b5e536294.json and https://artists.proofprofile.net/proofs/artist/dec45361-a8dd-49d7-953c-656b5e536294.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 0xe2107e6707847ef93a9b8ccf7e610b2ee27b0e8b839e694e9bc3c0235e04ecc6. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-20T12:15:31Z), 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/US3DF2233214.
Banda Top 7 & Allanzinho - Eu Te Esperarei
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2d481d2ea9c9b4910c2b724f20f972f3b0d85d15789674612e1fdd2c09fca59. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/US3DF2238319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x679e40fbd51d6e5e4ec518ba4508869657e299990e84c91ce6025ecf1015c613. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/US3DF2238321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9e1c61eb191a0fd39598a47fa15a87426b8a1e126ff4c888a18f20670d1ee57. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:54:53Z), 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/US3DF2238322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6481a3fac11f66ef0860947660eeef1dbc5f8ec45fa8017e884aa91d5f51ab40. 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/US3DF2238324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe246f96db6ff79bf2e52fddc8c6227b8b1da94bbc0444956f17a43de2b2b1312. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/US3DF2238325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c745bbaacfb78f7c9792302b7c15c8c538564755da6e7ae16424d9339d29c34. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:39:38Z), 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/US3DF2238328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x719439c38c96544a944825169d283b397158cb072e004f238cbd2141783a63ff. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/BRHN12200071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eab2d883cfc13e792024877f15f193fb109311c2cf3d4dc2308313d50743185. 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/BRHN12200072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8788ccfbeb120d6bcf12e28c06591803a5e56506c0536f3ea00f7bfd4af04722. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/USANG2233583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fbea98f4a86e4414a82e6f384afc8cc44b627645d219aff0c8203d064189ee5. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T10:09:30Z), 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/USANG2233588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1556515d486c29dd484edab91d8c6c169c04e6f146d2444a0b484f07f6113719. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/USANG2236506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7a343f33ff37c7c71d3e345e0968ef5ad193c770758948db08ce27e74b6100a. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:49:08Z), 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/USANG2236827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9395bbf4078d4a9e5858fbb852af7e73ef7db9e468f8f1dbec3ec70bcd94e3e6. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/USANG2287157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bdd68b1c54f5cd8d944609869623d443cc32864bda0099c64a3161e0fb3c864. 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/QMANG2233123.