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 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 0x61bfa12f868589304696106abbfec1bb8932dc090e4dd41dc74524bb3bb5c21d. 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/3fbfc3db-c427-4766-acb7-48fe088e24d1.json and https://artists.proofprofile.net/proofs/artist/3fbfc3db-c427-4766-acb7-48fe088e24d1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Time Is Only Space And Sky Is Not The Limit
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 0x1cb4e51f0ed56c84572ee16e57337ca480ce47bc0a02b2f40e0677ddadc2c382. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/DEZC62113885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb389b91cb61b14985af21936fab1b7bdf0f64b1a65a6a3eaa2eb4b490f6303b2. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/DEZC62120575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaaf9095194cde93eb9aee68e1019fb9f275dab83b6b2d6254758c64c2c86aca. 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/DEZC62263777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a1126b24d97f869454f3763bb669f39a4fa27307848305157ed533429100154. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/DEZC62286853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0165e0ae1fe491cdd76c1199294bfc6cfc75644ca1113457d3aedabedc1dd532. 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/DEZC62297197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00a34d98007f16f64f476c0c0207f33b6496b0789b4d0eeda456450e386a39b4. 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/DEZC62298647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8f01b6cee8345e2324e5a33074dc9edac5a2792394ee81c5044abf15f76331b. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/DEZC62317906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a916251d9b5de6d880349e958ade28c830a43cbe70eb599de5a914f2a5114c1. 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/DEZC62496772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5a091eba9334b5d3fab44eb9199cbf6b16b44f3cac05942526a2d0174691f7d. 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/DEXZ61900399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x666dd7f8186ae5673e43781332688dcb738055881e4136821d354e30b24eb7c4. 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/DEZC62587600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68ed37af5bfda555ad0a16bd4ba60257e82b006d08b8306ae032f567632514ad. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/QZFZ72190199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa62a1723334f0d7a1c5e115832e0770c27b0c20c79ed26291702fb94f7f4168f. 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/QZDA72147243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbc09b5571c590a17e7ef42f910c7f890017337b123535db88d736a6ca1e48ac. 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/QZES52171866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26bb5943a744946dce51c7d02addf5970eab98f3b153949f4b77ac23985c4a84. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/QZES72148567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bc1ceff49952268802717c1ee5fe8486fbfc9f33ccf6a691cbad0cc3e4dfe74. 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/QZES72148568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd11e040cc6e72abe052f8e2ba557083740c11fb2cb19da3e2c8096b0e5e24cac. Chain 2 (Bitcoin): anchored in block 960191 (2026-07-30T01:51:26Z), 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/QZES72148569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4741b6a6ab1dbe9a417a2f4007d869233f88d8b68ae1b979e3c260870603e05. 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/QZES72148570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4c3684ed05274c98e51201900be3d9a4da2e5d6216eaa68012bbf7a3145da55. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/DEZC62406364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82c7e44f754b9d6914870b03d4bee413f3380192522f94d21cc399a05460974f. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/DEZC62379727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31aad9026242a77e14a8098a040eccc047fb5592fd74db9ae15a393a2f4b1e58. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/DEZC62366630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x208f281a5944b52b7545f042d618856a2a0ba264c665881a761a5170ea92a794. 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/DEZC62320713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcec8add85f7dffed8df9cc1569ba00f55d3b21908e9ba5717356f05b663f942a. 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/QZNWX2249057.