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 0x11e20e2c14045073de797f1123850b85e9edad886a2e03a8481e209b6e5c51da. 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/b6f9eeaa-ba90-460b-b6ba-fd5d2518ed22.json and https://artists.proofprofile.net/proofs/artist/b6f9eeaa-ba90-460b-b6ba-fd5d2518ed22.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 0x6c9361ddafad4be9b4ac1b0726a9737904fc6fc4359af8b27edbab7959f4b9bb. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/BRF3S1500008.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13bd49d60594a47953628220c3243c8e6c5f1ee0ffca1f64e6c66086e15d36a1. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/BX9LR2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90b644158bec3cec91c4f88444326066368237e47fd48ea28da7da973aa44433. 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/BXJUK1800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c99020d03cd3be877045ed27b7a568c21cadb6c1341eb5abc2b164676f02fe4. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:48:48Z), 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/BXJUK1800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8eb9041d5b1189708cc1a5dda909848a80efcb818222f7052e17f1aad61645a. 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/BX9LR2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ddccdb0ee2735aad70cf2e98eb1043e4f4a0b72882c89077cc0887f831bbbf7. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/BX9LR2000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e57399696df922a2b37d90023f0e7dc7ae7fd3d9d2699746817b0262d82a5d2. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:47:19Z), 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/BX9LR2000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ab626723988cdf0308e320254ba955b623d742ef12789a46a697f8d256ebb9b. 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/BX9LR2000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01b8d23fb8b71d4c650c6b45e7ae767a7966a66b425a6ed5a90d446e02af3bb8. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/BX9LR2000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37606734f468f3b9b67a8ca5baa500a4217827325172d403daa1dbd60aa37f10. 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/BX9LR2000011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0549d84ec457f69c83f2559d862637ff8d07f8c7a3fc2c6c5c92a4f3644090c3. 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/BX9LR2000010.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcce4cf56d7daa0bf11146663125b32bc763ee9871d7e5e31e1908cfbf0f81689. 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/BX08N2300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ace5a8149ce82a0021d8c748937f680e6a0ef0a2575b8cc0a2ea289ddbc1a7e. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:19:42Z), 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/BX08N2300033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa818df17ad995153ef6b101785a1d11a7e9386a94343f7c663bd089fa62e392a. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/BX9LR2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd30bb114284cd8d57530dcc8d3fd6a882aa10d791f2e711f9d344aa8aa5fe74a. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/BX9LR2300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1334b9b3c15ea5c6ea9c0a6038d9b3f1f2aec6695345c7aed6a18d605d562ef4. 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/BX9LR2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5ea90605e5d75da978b42ade731de48b5036120bc557b7cdc5dd93cd6209d56. 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/BX9LR2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e5470765128faa17eb1c444db60412219bbe83a6a3f28a43a843b93f7c298a3. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/BX9LR2300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc94240280e233f6bcf14598fcc26390f050aa8765c76172cc1bd97d62668975. 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/BX9LR2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xece37a4c4c3042aadcb188791c79eb5570bb61cbb68c1f669ac9180cb05dca8a. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/BX9LR2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x378fc64f29482863c6037543b978a2e153bf69a8ed41833f3844b816067a7a9e. 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/BX9LR2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1136ae77a21f38c51af81819e0330443da29b1833f8dc472d6174811074190eb. 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/BX9LR2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61134540b26d79d77f5fdc5247582f7989e3e012923282f2cd414667713b878c. 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/BX9LR2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35373f75dce22ba9980f5feaf19d411457c69ec9e750bc3a15ae4c475dfa2578. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:33:30Z), 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/BX9LR2500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd00b270e2ac7d07804a16597df8ed1a6c994f75846179ebb49710e8966275f0d. 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/BX9LR2500003.