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 0x54ebe1456700c8dca4856955b1c166bec79e07915e996ba4bedb6d14c6e53090. 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/eea881cb-4046-4291-8333-507dd734c148.json and https://artists.proofprofile.net/proofs/artist/eea881cb-4046-4291-8333-507dd734c148.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 0x7834ac3ec85ac76caeace4092925c2c4deffe23a3701d257ad5fa68e03e614b0. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/FRX872185352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86a44e456a3c989897ba812037302fd1cd03fb2004661010e628aaec06f45690. 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/FRX872185210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8194c8c77b8ce2e927f718c2988d75acd8232c1653bba0861b51f7f831bef15. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/FRX872185212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc85a3b19055d6741db1e3a3f647094414830f9d40dbcde7911f080cc3328e8dc. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/FRX872185214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6ba623ed252317f2ba265a6578862bfd526dc3f047c8ee16ccd4969413aee27. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/FRX872185216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7e9c9b0c94c5dcc59f33f4e7b68a13daf4d4cf140d45112fc02bc256ac88ed4. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/FRX872185219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3070a03e8fea84630936e49ff7c2121f891f42fe85f1883f7dd4e902788d865. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:37:18Z), 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/FRX872185224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30e1c33133d931f2a08def75d6be40cea720abb7cde5dfad0b3e8ae37972448d. 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/FRS182106267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbed71cd06249675f0d7d215e7ee7481c2fdc67a0702b2723ae15147f75c9acfa. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T07:54:42Z), 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/FRS182106271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9510a20e861b1409a65e38098804e8e548fb804b94b97f7c2a1b4e0cb05f40b7. 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/FR2X42235595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d65f0f0071e6f6cd8c4f0215008b8778c5d78c553abb7ae681e99397ad8a7ac. Chain 2 (Bitcoin): anchored in block 959071 (2026-07-22T01:26:06Z), 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/FR2X42235596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2a7738b131803de324409d6e3fac3f9623b8fd2a9561361342ae1070a4dd000. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/FR2X42235598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x769ef47de5427c07c8a6e8aa4de859a1ba1a3518121963eb80adcd775f690f0d. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T00:57:45Z), 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/FR10S2336440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94348b1e944c525db130a539b94b00e042090d2a924c29492f07926690899a6b. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FR10S2336441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x593ee7ba1e02d38c0ab729bb89a214a4f66fe63997f84faeb794e7aff9e31bb1. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/DGA0M2377767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x253fc00798d3ad2cbe37cd42dab96dccf25c1e7b9eb58ad64aebb2807ac8de77. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T14:36:48Z), 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/DGA0M2377769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3aa662b8677499c5fc2066e7647931ebd8f9a3b5efc4f02dfd4e44966baa3ec. 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/DGA0M2377775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8e4b367bbc186174e1cd128fd69082669a9d8dd187485a58f4426ff10501d64. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T22:49:39Z), 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/DGA0M2377776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8635504dfc33c5c0695844e133e6e4fe6072249ea4cae226aa99628f244a3da. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/FR2X42411847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc48661b8ca2bda728dc1d4ec189195a50fc7188acf777faf601f431f6e728648. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/FR59R2455862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85d1e5ca9515868871ceca748448f80ed598ac1b31924aac46d0c93affe028e7. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/FRX282481366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x248d11ed8cf956d6d3ccc1c39f53ea1b514d9eb9aa7dd61a544f8221dc831c66. 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/FRX762499988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a294e9b08d14284198cdf59d353685d57b1689c76c4f678bb17a283d2807309. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DGA062443475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd46c41e77326175577bd594be90acc9451ce56a43575ad88a62c201fbe65494c. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/DGA082458664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d8ad91fb8fee1978ca5a493d3f2f414b723deb0f44e306e647f2bfa1a10f1d7. 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/DGA092438453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47bd75f982aa0c6e9aa22613bd03acf807e5dcac470f59378ab469f46c2aa26f. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/DGA0L2443300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a5318cdaee08e851d7085ebb5bfba02f75ede27bea6d61cd6e54cc6b7ef0e7b. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DGA0L2478707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aef043ca189fa3a6635b2107fe8c003eb3f9bae67f1515143ff9a2073b9fa13. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:19:26Z), 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/DGA0R2495931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb1c3d1553ced0808582c977493f169bd42b142aaf173af8a2ba0f6ec529767a. 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/DGA0S2414667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda20d5061c4906b7c34ad186fb36c3a02c831822d5554354e078bdf0e6fc8ddf. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DGA0T2404818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf729f2e28aa68ae1ff09cbf65bd91858938667fff5c5e783bd5f47a81722fa1f. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/FR2X42571508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x093ef954730c4487e862ce689c039006898a03b14daea79d927f3166b753e5f0. 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/QZL5N2572523.