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 0xe7fa1220b4b0374cc5fc60546ebc43dca9df36e607ddedd9eb133e555dc7bf6f. 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/60f2f4ce-b477-4c44-a222-b14494ae56a4.json and https://artists.proofprofile.net/proofs/artist/60f2f4ce-b477-4c44-a222-b14494ae56a4.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 0x27357eab3f59d34b6c53554a348712b2d0e292880f7680e464f73215c2df4fc1. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/CAUV21500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe38643dde4b14b47a32865e5168d41d3b90283972e8c4375773e2a32c132f32e. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/CAUV21700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd216b7b9833d9467e6232502b151b311b7b3b3aee0c8c80c0eadafe78c1dece9. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/CAUV21700007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94e3384981b8376be7d3515a8d0012d90e5d8b9c4a73c139ee0a88192de03de1. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:40:42Z), 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/CAUV21700008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d079fc9477798a08d11e1ba62edd1260d27246f3cb9a258729fa8f2750ddca1. 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/CAUV21700009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2a4384da71275b50318d6776d3431602e10d1044d779010917666a785423cea. 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/CAUV21900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2950e9a8cbb6f719138bc1f67acb61e37f1f7a40dbf1c20c406c043e20df1d2c. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), 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/CAUV21900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80f390c453d2ea05f8bce90650b72ebc1fda4934648a01e458a716a23e07c36a. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/FRX762102995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc1650826ae72b225ee899245252d730f115147a8cba76610f1757d9712425a3. 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/FRX282167482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x647478821432406e5c079a4a40aa38ea2b302910e08b0ae66ea36281c58eba8c. 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/FRX762160554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32dfe9049f7bdf529f85b5bd224f16e2fd2774300b45bf602ca01df8df165241. Chain 2 (Bitcoin): anchored in block 958697 (2026-07-19T07:58:24Z), 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/FRX762160555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a213a00d0dbcb99688c9d98d9796864c53f27a3b1219ed53d58f997afc14b33. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/FRX762160556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe793890ace9aaf77191cb1d025a8151812fa1615e8d773ab52b306344996ffb5. 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/CAM372300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14e70b1e17bb8192437bef491e97510987086eae685932ec4a10f28e395128fb. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/CAM372300123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe793890ace9aaf77191cb1d025a8151812fa1615e8d773ab52b306344996ffb5. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T10:24:04Z), 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/CAM372300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0cfc4a9c96f696177d34cbd6b59795e6d10b1a755dcea7334a275a977f3e3a3. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:15:44Z), 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/CAM372300124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20d1c235af840cd7eee05c1d1540e7feeab199ed24739ec46e256d0c807b743d. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/AUGBT2411598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb79a40668141da0b7d14d02c2327f26e5db0b8ba3d7784d3533e1ede932ebce1. 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/AUGBT2433004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45ee47ed8bffd62e1436d1aa71601abb3bd3c9ffac3ee286031872f3fc17fa20. 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/CAM372400091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x567af09625ca1c62a44a1828f3a267106e8a2e61a44cd30b90539b8716d27251. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/CAM372400089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f89ed150df7669662b8b2b8fc361862b67abde9caef1c847a1776bb9316b7ec. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/CAM372400090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45ee47ed8bffd62e1436d1aa71601abb3bd3c9ffac3ee286031872f3fc17fa20. 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/CAM372400091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71ced576ea5b1e2f319f88f582efa8b4188e0dbd6bc6a5879281df3eac5aa1fb. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/CAM372400092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12ade2656b28c2200717e3e4b069063db22984413df1e0a65fe2545d1b8bbc6b. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/CAM372400093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe442093b36cc7920c62b6d8643e5ed439ab2cc9e8e94c00807ecd1588f4ccfed. 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/CAM372400094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdea45c64e88a88dd1db1979c04e697d79b0e9eb2a38b17921e495eaa88007324. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T08:52:51Z), 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/CAM372400095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab7df3016c3459c8dfbd64f920ac027b13ffd669c4119b127aff8f295f392a14. Chain 2 (Bitcoin): anchored in block 958590 (2026-07-18T17:28:56Z), 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/CAM372400096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9723b459073c5a800f2427069a53e0ae93dd28ef8070689a893cb3f33b381c70. Chain 2 (Bitcoin): anchored in block 958590 (2026-07-18T17:28:56Z), 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/CAM372400097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f89ed150df7669662b8b2b8fc361862b67abde9caef1c847a1776bb9316b7ec. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:29:50Z), 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/CAM372400090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x567af09625ca1c62a44a1828f3a267106e8a2e61a44cd30b90539b8716d27251. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/CAM372400089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f89ed150df7669662b8b2b8fc361862b67abde9caef1c847a1776bb9316b7ec. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/CAM372400090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71ced576ea5b1e2f319f88f582efa8b4188e0dbd6bc6a5879281df3eac5aa1fb. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/CAM372400092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12ade2656b28c2200717e3e4b069063db22984413df1e0a65fe2545d1b8bbc6b. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T10:52:23Z), 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/CAM372400093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe442093b36cc7920c62b6d8643e5ed439ab2cc9e8e94c00807ecd1588f4ccfed. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/CAM372400094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdea45c64e88a88dd1db1979c04e697d79b0e9eb2a38b17921e495eaa88007324. 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/CAM372400095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab7df3016c3459c8dfbd64f920ac027b13ffd669c4119b127aff8f295f392a14. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/CAM372400096.