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 0xbafccf42ef5efed44b77a21e591357737d98d978b9abc4003df24dd45d7eddf8. 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/2af0fc95-d663-425b-9eec-b6f64206272b.json and https://artists.proofprofile.net/proofs/artist/2af0fc95-d663-425b-9eec-b6f64206272b.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 0x8f1c7175904be18d1c2641d2a4acd8ded11bcfeddf8f459c723e9d54393888ad. 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/USDHM1320573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa616fd64497af4f4e90edee811a0ac4907ff54af975b4e9d899de9d43f393c11. 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/USDHM1320574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2787054728f56b56c8b2fc1aec239e1a8b4dc7192dd57d193ad3b43b74df481c. 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/USDHM1320575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14715cab719e53d6a54b8eebc3fe2046045c9114d30c7a83949bd6b2b7cbf025. 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/USDHM1320576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17854b5a015f879f3f62e187551dcc0439ef5e7321bcbc130d08062c22d6ce85. 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/USDHM1320577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x858a2681eea4b147365edf8125ee8b7e4eee4857914416c3fb3b3a058668cbcd. 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/USDHM1320578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacd8f7f3c12720dcea5380860edbd1dc45e06b6c0410b8a976b79a4e0c5c9ad5. 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/USDHM1320579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8af48e6ac97bf0d2ebefbb025df079930aca23ca3a3fc69053116607e09269a3. 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/USDHM1320580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f9f6c18a458af63c6ddceaf9bc32cfcf27a3a75681dd10642f30ff996761036. 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/USDHM1320581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1076ca1e967c51e72178d69bb22e72ec024872669aa26614a393e71067a934d7. 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/USDHM1320582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94ed40ea4a19e05bb20489928f2325bb12c1caa2eb44647063a846acd2521e46. 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/USDHM1320583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x610a7808754b3686f46e6257e942d49cf1f8fd07a635911977f358a7f78d2682. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USDHM1320584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40777e102c6e2370096bd5f67a2348aaf8482ae9c84bf6f53bb9b9850936b9cf. 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/USDHM1320586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fa952cd3e646ea3423c9d76b0a79ab1a1552ba5c1f940887024033102bb91f5. 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/USDHM1320588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc081ec015251f2be2db89574936bd0e929b66d4aab539afeb81515596c26654f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:49:06Z), 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/USDHM1320589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1918054f7c2544da0d7777f953a5f0ada0c9501750effd6ceb89b1f53f409ae8. 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/USDHM1320590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe09569efeb94dd61aa745ec3185135c1c655cdf66f932f64afc15dec4871ed3e. 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/USDHM1320591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa82a9977865b72dfeacd3ccb4870b6e958448b8f0a77480a7b0225e36920e593. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USDHM1320592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7ed16797449e1c4454204556a8dc59382b02f65b380744f24ba7a6b421d9b5c. 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/MXF331111027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5177dc4165fdda99939b91e90baeeb4bba84133e1849f47b713ccd8645372a9c. 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/MXF331111028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x350cc95194c5b7d8ca58867171fa4dc2e668f50b3a17d5cbc35edf28ca4badd3. 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/MXF331111029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7a07826ad8ca12d9e8f9d4990880a83676a2f3cc6f19dd6ad09d307ff223778. 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/MXF331111030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8be9880fea36c45fca5025274cc2de44ed5a622976fd471ed2d79bbd80326ca9. 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/MXF331111031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ef53b54a10815988a52dab3484c6e24094e05098c9f31bbfecf3300ad20bb0f. 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/MXF331111032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f404a600234483fb13f6f7169856f5537ac1aabd51a899b0c3af76b7e8a11a9. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/MXF331111034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc29ac4240d31cd884eabd343dd467b9071412248f3a5f93881cf1503d678280e. 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/MXF331111037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17408a5d6350ef5362b4a26fffbe3abe89c7d0bdee9efd1f176a29db693d550b. 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/MXF331111040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x852fd04c0fb6d81a5b0cdbbd53ca2ca38ff3a4073c8101f2d26c5277abdd1240. 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/MXF331111041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7ed16797449e1c4454204556a8dc59382b02f65b380744f24ba7a6b421d9b5c. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/MXF331111027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5177dc4165fdda99939b91e90baeeb4bba84133e1849f47b713ccd8645372a9c. 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/MXF331111028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x350cc95194c5b7d8ca58867171fa4dc2e668f50b3a17d5cbc35edf28ca4badd3. 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/MXF331111029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7a07826ad8ca12d9e8f9d4990880a83676a2f3cc6f19dd6ad09d307ff223778. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/MXF331111030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8be9880fea36c45fca5025274cc2de44ed5a622976fd471ed2d79bbd80326ca9. 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/MXF331111031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ef53b54a10815988a52dab3484c6e24094e05098c9f31bbfecf3300ad20bb0f. 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/MXF331111032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f404a600234483fb13f6f7169856f5537ac1aabd51a899b0c3af76b7e8a11a9. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/MXF331111034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc29ac4240d31cd884eabd343dd467b9071412248f3a5f93881cf1503d678280e. 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/MXF331111037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17408a5d6350ef5362b4a26fffbe3abe89c7d0bdee9efd1f176a29db693d550b. 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/MXF331111040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x852fd04c0fb6d81a5b0cdbbd53ca2ca38ff3a4073c8101f2d26c5277abdd1240. 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/MXF331111041.