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 0x6520a7014d530187f6fc247c7544a6858f0bc90a4aa123cd06a079a5523ce138. 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/9d2949cb-33a1-4183-b3c6-6f5575c6d78c.json and https://artists.proofprofile.net/proofs/artist/9d2949cb-33a1-4183-b3c6-6f5575c6d78c.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 0x076579a8d36a6dcdd7803f7b0ecf149674697205cafae56a313cf3bffaf54b22. 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/QZHZ52128914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf82e67ad3b32d10d14986496868ca90677795c26fae4795722ca40606fa8b5cd. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZHZ52128919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c78bfe6811bec94c9a7f936b6d3a28751d19ecf6e0d68ba50439580595fdac9. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZMZ92174849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfba6579fe5dcf04e8b6752040ecbd6c99c12dc7c847e778bfe79a9166e92ad22. 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/QZNJV2131149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e2502be190b7c3bf1161759b93257f5cf3e872f16e1f0d420d43bf6f5809461. 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/CACWV2243814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3fe607aa7474ef604d184d4a961335edf0be1d4a300f42cfcdcbb8578792803. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:52:37Z), 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/QZTV32349326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcae8af024ac1ad9abe998327c0a79f37ef3327cbf08ff157041ec6f76da304e5. 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/BK4DA2413550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4b8a8e71d888dd2bb2c29a76dda19756ccaa0f51e5bd3195e32718174b0a3d5. 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/BC2GV2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92f29eb91b46d42c0ad4d7722b7ffd8fdd331e0e12ee3c3cba21a5a94af8abfe. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/BC2GV2500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa67e1180d33d19e69255e1a287010d970c035afd9ea84e665f2738a5ef97e7ae. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/BC2GV2500138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27734ff0d5990e223268d1c18daf610f953dae9da07160c0a1a18faaedde6a06. 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/BC2GV2500139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12127910db4b1821258db85160f815ecef38c2228fd2d76aa26daa3a410e4e98. 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/BC2GV2500140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02bcbdc489c3fd38a45a494a380c0cac450545f1c1b3b39ce779479a8dfeb2a8. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/BC2GV2500132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d17a3d96cfb22a369b5070184a535898c4a08be4c63a8b353a3cebe3216bd70. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/BC2GV2500136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b2f20ddcadb270cd197d3e6c73826581dea35a857c816b41a6af29fed30b8d7. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:57:27Z), 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/BC2GV2500137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0825413517399e45ddbd364ff69b1b095f81ed3a54b223b61a7d6fa878282df9. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:03:51Z), 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/BC2GV2500141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe55aefd15b95e371559f3fb9ddac4322b7fe14caa835137b6b2c0ece853e758c. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/BC2GV2500156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4810cad0a7b49d34b9da4cef35f41b9900b4ee3f75569e5e9ffc7b7e0f9361b. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/BC2GV2500157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ee43c23155bec6ca39dcb6e2f2c8ae170ac08eba9548b053d8eecbf622caa03. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/BC2GV2500158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97c092555e1241cabcf99cd93adbd998b9338817cb597e13573e284c09cc73c6. 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/BC2GV2500177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18a42635cdbe57137e7429568601ef4873b93ecf49acdc978d82a6cc5733e2a1. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/BC2GV2500206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31a633fe5797e809c81afcb91e690c3e3481759f29a554f2ee684fa09b6e6e6f. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/BC2GV2500207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35817ce6e5e78c413360052613aecd6baad5c34fbe5e7b6d91f7065d3e62a093. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/BC2GV2500208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x427c5ce7b06d45dce6b79db4a48f4e50bfde09c049e8dd48ede4d4e34dc1acef. 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/BC2GV2500205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65aadef080d66e644bf7861a4aca91696114696982a1e95f6e9b6dc7f1126e44. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/BC2GV2500252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf026a5450c4b9fadfb2e4d2197910df0fee8813cf8371cbc71edc1e33cac4292. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:28:09Z), 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/BC2GV2500257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x142719cd22aef915cc7dc7d6c6ff25b9b2d0dde4ea1ba9be382a9ae6d441f958. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/BC2GV2500217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc72fcfa148dadaa38f89683dd2f74089cbba8c45122ccaa45a0653ba738bb1b0. 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/BC2GV2500213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefccab5470a0c7daf7cb49dcf3aec28680e2b39dbd2ebc134887fb268caac443. 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/BC2GV2500215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3df0d6f303ca077b67429b36dbd9c852a699573a55f3c0adaed31bc8d0f38dd. 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/BC2GV2500221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3c074da513d115e6b1cc9d2842b469831a8a99cd2aecc090769464c7b22ccc8. 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/BC2GV2500287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94e69cc8b2d1ff81b3d574b097fece395472c08dcdc42bb8a72815e41f5cceb3. 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/BC2GV2400032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x029f224849f544fe532bc6c44f37a02618bd07f1d6f187504e178ca6f5d34a37. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BC2GV2300071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbec9d243cc91f84c0224e959694108b0ad0eaf4b7dd433ba5c320db3d0ccf2b0. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BC2GV2400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef169b9748417327a2c327b18f1afd12c510b0a0be5ad6df15edfef874c4d92f. 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/GBRKQ2309339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec409f2e87820168f18e99443878da14b0c9460e3c9e6ff679c0235b8f5f40f9. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BC2GV2400106.