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 0x5da0ea1c29873d6a147b1a19c3c64b6a722b290c0e62641a611a16b7fc047f11. 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/8219616e-91d0-4221-8da9-4b7ad6d7a676.json and https://artists.proofprofile.net/proofs/artist/8219616e-91d0-4221-8da9-4b7ad6d7a676.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 0xc30fd7ee55fcf2d1869a0d28c507435366278d18f17af2beb53de0d6755e5095. 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/NL3JK1600003.
Breakfast at Midnight - Brame & Hamo Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaa619e550a432dfb69a86bee00118b5f4758d293e92dbfdc6e3c6f17b142a15. Chain 2 (Bitcoin): anchored in block 960429 (2026-07-31T16:07:24Z), 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/NL3JK1600002.
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 0xa25675618b21515890ee5c322d97d16759fe6df50db081eb5065d239d666a6fb. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/NLJ3K2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x301932bd4e20abdf0a9994d9a5d0de46d9cf23379e371fb6e49c962576b824c8. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/NLJ3K2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f6fb37819346a7ab5915a76ff14d66596a951e44d1b8271d825271631be684c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/NLJ3K2000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74c201e9f97c89e223ac79c1ba0303e8fffcdf24a718e59baa12b981c9170e85. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/NLJ3K2000013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x240742076180aac0b0a91da0d276b7a0f7be9593e48a23c3bda3ea2e5f8b201c. 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/NLJ3K2000014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaf840eb2a91cb738567f5a9eafe9ff09008861b07b6b2d5b95fdd1a4c506ac7. 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/NLJ3K2000015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2c0d46871dae4c7506f8a97fc0d296fbbb3b404730c44531b0d6282857e94c2. 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/UKACT2030767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x873e3e5c74a5820328dea8320a9734645c74faf96b765b97f24d766b19869817. 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/NLJ3K2000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c1df0a6d3f5c0e529d325317382b39726db1e067e2fbdc0a45f2bbc5f48b8c1. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/NLJ3K2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f4ba59ba62b4e6f6a876b346bfe949238bc7737706e5bca9488a03621017fd7. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DETB31800592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4847eb1dc95862facf56d0ee9a6cb84ac3a1e15adb1d626a95311cdc66a360d7. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/DETB31800593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3ec23dfc7d2e6154d1fda5b7e7931af7f01107c70057d5a6cf7490b74d3bcd3. 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/NL3JK1400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf84faa01cd81ae1d69d7a4ec832c61ecf2a0720fb760c680c630857d0b413e9. 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/NL3JK1400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50b40f61908cfef9dbb5298036d9e754a145f00466824569440ccc7c003e84ae. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/NL3JK1400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d238f08a513a4755143048261954d75874d0015d77c643ea062e1c90632c3a2. 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/US83Z1447870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55e1e339f8a87774200b43201dba736384ff667e90ba2396b38fe2027d2c79f5. 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/US83Z1447872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedabd21a3184a8b76c2fd065c3265d55afc6ee85fe397554afb1c59a58ae1893. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/US83Z1447871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d03be61c148304d09e06673d7f454ab6c235ebb2f219e77efccbae1745c254d. 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/US83Z1215366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26c4d261b1dc13a21f645845f5a18b3412cda29bb1b0b89aab7009695760acaf. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/US83Z1215368.