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 0x717fbe2aacc240f0fceb82ffe879b475250d62c201d8f20c9741776b907cc544. 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/6dedc6de-6513-4167-b86c-5116847532d3.json and https://artists.proofprofile.net/proofs/artist/6dedc6de-6513-4167-b86c-5116847532d3.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 0x24addd386261ab020bcc8b62c5be897dfd17591ceeaefb61a7596ef95df299d5. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/QZHN62350626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x152661f1eab9f2001fc579ca497c8924b27ee784d32bfb78ceae143afcba7357. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/QZHN62350627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7a53deb914a7576870894cb938cb5510d01bdf65a5f9ece47e4602e1e9badc7. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZZ662300541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fc9661780412592c3fe5de0cc6f6de509401ea99cdecbe6fa74a3e43bf515c2. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZZ662356941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf440c3f77dea63af67c9fb63c7eaa4c227f27db6eb46477c94cab7e5d5af3736. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZZ662356943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88f1b1b1a52c061a0b3ebec86dfa98f7e716233ddb379fcac0fda77d44f5e09f. Chain 2 (Bitcoin): anchored in block 957796 (2026-07-13T03:24:42Z), 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/QZZ662410319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfc57448263ac2675eabb0f9586b331245f09195b85a95cf53daead32529c182. 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/QZYFZ2465356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06825ee0b77fb57c58165e00a0395978c84c62006b86b28c638daaad417728f8. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T03:25:27Z), 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/QZWDW2476375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf17181f353534b0c77e09da62790e43732e1c4c6a13c309ca4d9e5e0e82d5c2e. 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/QZWDW2476376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5e73cd231aaa34e1a9f7ea19baaba88e61d676649b70cb7361d6dbe0304e380. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZWDW2476377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eef419ee2cf3b72f723e4832939d0d31c1332105dcf86872c3e8240934a8033. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T03:17:04Z), 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/QZN882574847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80b6c554024ca3a3d7da31d11726d3249e81038f3df5dc14a28592d6dc884b0a. 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/QZWDW2510174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8769293427f4cbb89ba33493fcd85a254d740ef93fa036aa59dcfecc5fe61c4. 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/QZWDW2510175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xede1a99a3b1a96ab386c24d223c698acac6aeec6be12fcb548da8cf524bd110b. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZWDW2510176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e4f1fbaf9064c1eec50d461096da75bfd67a385507ff71fb5999e20aa5bde6b. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/QZN882542613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33600a424cf84194044af2b458a52606261ca74f7923af272c7cada3526093a6. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:51:12Z), 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/QZWDW2510177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad0091a195cc78b156b6c5de46af05d862707a0740bdf95e36faade4f9defb91. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:13:20Z), 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/QZWDW2563898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8afe20345cf951f85a39e45faa1dde3b8e8ab5d6f253cfd8b317cc0e7315d9d0. 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/QZYFZ2517404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a47d9f71f9fa6e53d81908e54184f30b9cc82f10517ea9103450aa8a2179bb7. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/QZYFZ2517405.