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 0xeec1b41d54cdf76b342a32e3520426efaa0d0dec4301c7a3fe9d23192c78bb45. 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/3583ecea-f52e-48a5-9ac7-eab94916f211.json and https://artists.proofprofile.net/proofs/artist/3583ecea-f52e-48a5-9ac7-eab94916f211.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 0x71949b5040212d0526bfcad48578b712c2e6c124f895fb4b4e6c51ea6ba85347. 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/JPN262100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cd071f92f117e81ce8be4ed5515f78e68e796b98531a542054f77bb0bdc8223. 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/JPN262100017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x087f24b0f5c6c8e3d6c39bcbf7b9cb890f0792a36a560a1ecb4a83470ca3f432. 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/JPN262100023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71949b5040212d0526bfcad48578b712c2e6c124f895fb4b4e6c51ea6ba85347. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/JPN262100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ff2b8fa0775880fb955bdd84fe550eb17a9e3d64e84ea070955393e35c8d21f. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/JPN262200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04ece83f0a925944637812d75ca01b6f3535953b5f53323c7fd54da09442186f. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/JPN262200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03f67fea3cb5de8b777f1cbdcfe516ab8f6356a3294263c85ffc4eb9faca0786. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T00:54:49Z), 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/JPN262200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79780fe5adbd604234dd0c7d255e1b3869ca4379ca744c89660c27053e06c41b. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/JPN262300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d82645c9e50153778f92b4e7fcde823609aa0d7969e2fd682de175a5504d8e8. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/JPN262100034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff240d7d0a4792a1efb1b743555576ee969afae91b2c574355930ac8cd5f014f. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/JPN262300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9afb4598ee65c005c193f774aace243ab7768f19c0e5b3fff6f1f0e9764ff9a. 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/JPN262300024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86f98e78d92b5456242a1f7d4f1abc62113c55dfe4b93fed6d2e7b329f35d8d3. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/JPN262300026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c8361d524e600015b871b241a8f3fe265a46381b54c448ef3c8f442609d66cf. 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/JPN262300032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8f687c91e107729dfe85085f18dad216c20a6939f56b6d9ed2151026c5bfe5d. Chain 2 (Bitcoin): anchored in block 957576 (2026-07-11T14:19:48Z), 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/JPN262300027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x492eeba616d75163a8fcbe368aba3e0bb1263d7d896ee3ee608fd0ec034cd422. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/JPN262300023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99e2bde8b565873b3fcb95262696b05168416a92f09269aaace6c1c37693de7a. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/JPN262300030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3c7236d1ba46ff1bcd2e3494b357cfc126c4bfca5dd565a4d7d983621af0cb7. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/JPN262300028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d959a9d5a6d19c31fa50a4fca91e4eefff0fb3283dde95061b6513f3ee0ee66. 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/JPN262300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29333133c18429cf13d58086aa413b8cf79cc9fa94346aa5d3b869213722f6ae. 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/JPN262300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f16d9524a21dd9e55f75c856eec3086ba7482c1713f7d297a6f20d876b069ea. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:40:55Z), 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/JPN262300017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35ebcbb215eb0b60effabc0dd74381bd989193ffca06a793f914d374d8b0ca4b. Chain 2 (Bitcoin): anchored in block 957579 (2026-07-11T14:35:38Z), 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/JPN262300025.