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 0xfa4dc382e7cd96cd4596f861e404d1af528050b6594a87887a6018c3a595b2a7. 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/388dcf6c-3e94-4d91-b79a-394449e034aa.json and https://artists.proofprofile.net/proofs/artist/388dcf6c-3e94-4d91-b79a-394449e034aa.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 0x22edc725577531e43b7314736ab43233f72ade65bdd3752c53ed8baedc7d7ced. 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/QM6P42525713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30d5c8e460a58ce3a3c1ce14261dc91dba31e68c0b2b2e63cf89bb4070ea605d. Chain 2 (Bitcoin): anchored in block 956485 (2026-07-03T10:53:04Z), 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/DEKB72062158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c1b61d26d207a14e3730cb046dd6d9bb11dfc4538f2fb90871627c3f0e4561a. 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/QM6MZ2573320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc714c3dab3a904ed17c088d07d3ceab0d1ed9d5df86c63150c1016a50a7448bb. 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/FRX202241155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaed18ce42f9d704a9619312fb0c67727e75c5b5e6d56b07172d7f2868b86d93. 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/QM6MZ2573217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2a829ddee40c3b0313efcc9954e5c39e1f7afa5e4a30414f5a9182de7fb170f. 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/DGA052434701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe5806e8e1f908abb3439d2595047ecbe51b3002e8d7a1e1a62356c1a30aa749. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T01:00:22Z), 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/DGA052434703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x543b61958da6e29e86bc569afc7a4c4265475ae9ae6b91114042778871734458. 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/DGA052434712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7922a1730b1aa77be75833d96cad42b7a1b5fc979dfd1e59f9031815c3a511aa. 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/DGA052434713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3219d2c93f8be9ddc44bb3d8fdf1e89deb4e49f6137a57e216482da4b16b0e7f. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-20T00:12:36Z), 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/FR59R2534283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfdeb0d998464eda85af558b490527c59d4a3f64d0f7209657f149f995bcb2f4. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/FR59R2534271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x500b80dee9e3100925344a1cec9ede6e4a62fa24fd77b2913a5086f529c5bcc0. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QMFME2457443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0fc1fcd846633dcb8d90fb8bab9953ccd21aafa3aadac0ed4e8b2b63c84cba3. 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/QMFME2457445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x571a42621556cb044eea840ca7908100620198eada4f7199912f0011c5e522e4. 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/FRX282546597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa571d0594be5aa7873d05a37122fb0a81a4041a1078c7b1d89c35ef4ffb49813. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T14:00:15Z), 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/FRX282541766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9069aa82be049f4cfeff1c890942bde26b2f6c75094aad99ef8c4587e1e47c21. 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/FRX282541767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2607d54edab2c9c87bdd87369f1c51548e0fd2ed73866efb0952c4f4f90a1266. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:24:13Z), 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/FRX282541769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x594f5d97a464b61a4c062ddd7d7e4e0f7cda8827e13c1e6e4fb3386ee886e974. 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/FRX282541770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaf39337657fbaae1ff84606c88cbf009705b21522249ad825e31d41e60b0b68. 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/FRX282541772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e96c72d1a1d8cff599e886e811966fd6eaf196ddc5309c07ab46f0bb69a17c5. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/FRX282541797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe213bce289552c3c93b4503423320da459c2dbc461e58265dc911a1f81523124. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QZTAX2594057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc83d713f0b552cc2db18cc2deb85a268f3c880a44940f011e2dff738a53483c3. 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/TCAJW2547540.