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 0x526d314546b98c428016bae1e518b3f75eb5cd1a27fb7de2a5122fd9ddb59925. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7592f7f7-7d64-46d5-96f5-038b13a34820.json and https://artists.proofprofile.net/proofs/artist/7592f7f7-7d64-46d5-96f5-038b13a34820.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 0x8c286dc04b8f4d3e289a7f84dd0f4916278b647e51a47ab7f1138a340ae02569. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZS632442651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62eb29dfbb350170bd9fee1a969152c7ebbcc8a3145d013af68836a167adfae2. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:34:38Z), 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/QM42K2443101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ea4cc077eed714cf93eb2fd869b63bdc487e992a8b67e2853c6ee868f3777b3. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:55:27Z), 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/QZMHK2433037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b64980136ddecca9e30dd14d4d119060cba9636d38bb1a6757bba0a87fba97a. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QZMHM2427398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc76348235ac513adbd74f3e448c2b4ad10df0fcbad58855264c636b393689aa6. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:03:33Z), 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/QM42K2441932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc42c2739068b5580b3c17a285cba893b6716e4e8663510c401cc85469d15530f. 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/QM42K2453031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaca257b4836d4a8f3481e4a9408b791f04e73dfc75981aa7ab08ebf03be4fb8. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:25:14Z), 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/QZS672483795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e783bb1e9aeca2fbe05c165f23d030e3c77f2d445680a58a74b3a2e019ddf35. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T19:03:12Z), 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/QZS672454163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2348b297d4c056774c033b1c69d7d7a64306bfece8441a09e9483e30ab94171e. 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/QZMHP2408048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1878f98cbb87852f9db5434b5ca6d4a430116e1e5d8774028298ead51cadccf7. 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/QZS662421737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5cd209106d60b81a7e313a1abe7ab416dd09ca229b9e2302b0068ec315d59c8. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZS632448917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x707e5cb8022c111c712296a58b5b8caa3a38c9308d46f69a3b94d4da04df270a. 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/QZMHP2413829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9eabea411ab68135a1a71d85c49969dd8f4a54c972b7d13b0c699a17f3ba3f9. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:40:31Z), 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/QZMHN2411904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb48c0fdfe6305ba7a7e5628629f0ee5e9da5a0a2febb4b61f205ed557567b0c4. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/QZMHN2498197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf59c4c9da5d9354fe4ef50a6e2fd400ab4e8d2f77c14cb2e96d96479e03be1f4. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZMHN2420934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15ab01004eb5f0a9c2aa47a9fb212b67120fceade7ba3d859ea2015229ce195d. 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/QZMHP2437977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f91c3d822ed1a032aa1d725be198eca58f8f3cee41f143793b41bacff5f0164. 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/QZS652486188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3342fadc3df13aa96570c43509b5980e4a979ab01391a1e5894551d710d6d6b5. 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/QZMHK2454867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x793d88623aa293414b31a827d02c1dfc12ee15f8f706033a30e8b96abd6e585d. 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/QZS662448555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8007a33ca943f252cff731a8d319c50504b94408e1b6e26ebcf2a1f6d48cc2f. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/QZMHL2443107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99c24d56cb4b18b4833bf6bc4d4030cdd1c1fb0db4a6180621c94804c4d942fe. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:11:51Z), 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/QZS652480317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd70905bdde9f24edb2c352e707a8564de7e588bd7d7a5cc2863e0b06bd5ff0d4. 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/QZMHP2484677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6fff55d621f20bb9034f2c8bd35c186bb0da5b28b08995885a782669fbdb042. 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/QZS662435626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb413cb8cc4f72c80cf10900e451c6612fd88ad82d2ef683c66bba5feb55b5ac6. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/QZS642488103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeba3330a95e52da4a5211fb68dff3b685d15064d614732fc8e14109987778c83. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QM42K2473024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c44bd54e358abffdeb90d35e9ac3b5ec78ad8275625bb6057fd83a4f9711821. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/QZS672472393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x330cd1402e195d2209a4f8dd76bfcd6af512dd1b7ae231560ab5d9b93f8f12a1. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/QZMHN2405049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85c8e8c14fc962eb4427f4aa8b81aaa10a1d02c51c083c0c873ba0ab3aa6d814. 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/QZMHL2424040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83360aaf5124dd63752356f6b22429a96673c3c6baf446e10cd2b822b043a94a. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:10:34Z), 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/QZMHM2415729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfc5f2654160901b3d9be8074a1dca03400467cfce145093ecd07b8879245521. 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/QZMHL2471394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a36989dc706a5228291196a997ad5eefcca8d5bb3bebd8c21f9726c3291df54. 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/QZS652455809.