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 0xe504766acdd66f0c00da45cd061566924b91925bb8e85987d6e8d3c59cc59157. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c3a04d52-807d-427d-9544-d1f17a7307c2.json and https://artists.proofprofile.net/proofs/artist/c3a04d52-807d-427d-9544-d1f17a7307c2.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 0x4a7f362da3a7d7f12a7a3e607ed9fcf851eb2f92c4657a42cb328debd2e22cfd. 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/QMBZ92396948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5fac1ecbacd45fe29cd9fd9495a66b4411891252273c474dc295af07d31ef36. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ES94B2300093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4957a1b01477275299d081f3ffc9ab52eace4a967f19a6996c6ee8e7c7e5b00d. 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/QM4TX2333644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf98c6347dabd679f9c771c09829d55acfffb1ce10647d54e82663c8350dedeea. 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/USA2P2252999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d91dfc8bd53c9f7671a9b739236b4cbf792b1f123b57ca430b8e294e3e7454f. 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/ES94B2200121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6937d2ab2241b658213e7a472a4c6e27c5f5055972586d8efb720d53b03b513. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/ES5152101175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x952fd96f140d5a35cec965c9610c51eab565e88a865fe9ecc0034164d59f26de. 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/ES94B2100038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b89ec46e6ca9e2acf293e1830f8e914c71bba02bd1124c8a1319218f5844d76. 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/USA2P2121645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cec143711f61b9c938d680f4767b664c36b073bce519d14d8122f3578e0ebe5. 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/ES94B2100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39f0aab2df736f7b02400884d5acf8271098c0865a672b2892fc6dca178b8ee1. 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/ES94B2000216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe603b273f79ade255a2753b6fa99f8e5bfa9792afb12d664d1cb93f1ee7c4481. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QMFME2091935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce3fe0983fa3aeebb87dfb79e5457e16de824192d39494bf7a44979b6c9a54cf. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ES71G2056657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fd9c9248f133d79f293394e34eae11f1cfb4f182334e02b996849d95a6f31ba. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QM7282041110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe88a215611217313a7579ea6bce2b9c60e9d176c9dd1e1272940e260b2c51ead. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/ES71G2034882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d44e5b5dd5f6c0889515427d17447b331cd0eb0d145e3e6c881124699224bdd. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QM6P42031559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed04f94fce43a5c579783ac94def8cddc58c6c74ffac369fd564e7d63b34c2ea. 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/QM6P42040886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62d7611bfb554890b0ae6f77615e1b828e946d1653eef06343b72c0db2668882. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QM4TX2085788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6380fda98dc4eb900c071d05175151e8b660c1d2810fd9edc7c8820627e23dd. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QM4TX2070387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f2dddd74e63b7b46e5d9d8dd3c223725a03bf514b57b39ddc0136f30a14904a. 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/QMBZ91981146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43395790d74f60ab6117605c52e41540bb61f3da52e3a3f19cd22b1cad69179b. 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/USA2P2419955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcce0ddd07a7c7e3cc6968ae67ee906e5dba0244516532f731723ec8fb58e2326. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/QMFMF2442820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1587459be7e0ec3a28ab7e72fcbeda186d0d08b49ada7ba09d5db64b40b44b89. 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/QZW9M2472852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12e0110ec443c05d580411a1c64330f71369a00820ac9a21e0a7c61156d4f237. 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/QMFME2475129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10e57b5b06242bec4479534dffcbf4bc5cbd336392ff175544847c0f3cd72bb9. 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/QZTVM2484120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf401d00f78bed4df3bda6555f4f7116f725d986642962008edfb5cfb853cb046. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QMDA62454105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ce38179345bf337c08e3d605ea3f922d0ece67e244664811080580f5dcc7b51. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QMBZ92442070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7d91c4e916e693f0162a9b64aef52d1af856bcf190dc0f9e4a85f5cf8eae14a. 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/USA2P2162166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e82608ac284898616b08b35fc25e7745896756236f8ab2ad535fcad5a1610e2. 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/USA2P2162155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bd5fb83f877c4498af56d582eb67e6622d9cd6294356047783cfa65221e0827. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QMFMF2105806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce3fe0983fa3aeebb87dfb79e5457e16de824192d39494bf7a44979b6c9a54cf. 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/ES71G2056657.