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 0xe4c07904aeb9e0b60cbedd3331799c5f6c7e583822212eefc9a998978c52b9cd. 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/6c1ed29c-829c-4b47-8af3-261572d3dc2a.json and https://artists.proofprofile.net/proofs/artist/6c1ed29c-829c-4b47-8af3-261572d3dc2a.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 0xece6afb05b98dc50be9e2e68e3c53a404469b31590ea4ce2c633046b9b11b6fa. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/USDY41960162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62e8607007047a68dcea0342cc86537e8472932a949ac7eba564aa31c5c92e1f. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:25:28Z), 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/USDY41960768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f4cad150af9ffeb5a434e88c279832f62a29f41deb4fe3e93e26c4baba74ca8. 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/AEA0D1913394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe915cad4ea7e743ad71061e398257be255d7dfcf0a64b128e5b85d20bd9eb09d. 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/AEA0D1913395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b48e86bd1c7dad0a88969baf717e230affd7b046823179bd64d370e38fd26f2. 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/AEA0D1913396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe81984e4b3e340b54ffefd3494b97fbfc4470e7f6b0c28714d206e3519af986a. 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/AEA0D1913397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79ca338a80d33ac493fb4d35d1ae2f98e6cb14e36265ffae8375a10191048d91. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/AEA0D1913398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9cf5a3724acbe34507e2ad9ed0300ba694df09acec43cff22766a309835c6f0. 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/AEA0D1913399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e4ba56e49d28082f568c2398f86d8bade052ad4d5deb6ce2e3b31acc98571c6. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/AEA0D1913400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e40e82c0b3cd9593f4938d1bf7fb0bb52e94041c63f4e02a5dff0fc7f5ec9f5. 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/AEA0D1913401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa40e44f246fdd50e70bc7881e91066b675bbd8bf82c95a965815d7135a9ab47e. 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/AEA0D1913403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e5d48cd539e58d8fdc9013adfdd7e7876d71cbc574d580e2763120df99d021f. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/AEA0D1913402.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x839ad371ef766e0fee9ad2b1a4fb90abe0395b0e73de63683fbcbf0bb5fb52de. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/AEA0D1913404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc82a293dd9b1de9beb616391f022a83d12220d4d9360d25beebba728c944d5a5. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/AEA0D1913405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x290742ff0f6a78a31990aff0343b7773b5ef9c0d2792dbaa3f8be0186a5ba751. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/AEA0D1913406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8a5b7ea22e23c806019bec6567484e06f6614c1928239145232ebc5e84c74b6. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/AEA0D1913407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea7de63c4144450931f828c3436c36c29926da23673b93adc5f36271473da726. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/AEA0D1913408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb91267bcfca795311219e54bf12843cf62be3ee9e6200032693179b0d496e95. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/AEA0D1913409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d74cbd3e6aed8199257793f0722fdb419d03472244ef2a98097e8fa451e4356. 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/USL4Q2014094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93c6d3cc12bc55e4326eb4b03691d9b5b8e46fa42244154648e5941e22fb0b1a. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USDY42159126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f53751db5e81603f4a9ef9d2c9f1775ff531b68fe232f9935ef65ddd8ee494e. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:22:08Z), 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/USHM92155848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0990f5765e22c3b2cf2f9d4e401da9d5bc4b23a881143ea01ff8c1f90995965. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:30:52Z), 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/USDY41960158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd7156489491be6e8f62468211d43c2af9ac3bb99fe9e9bad6d295800d9ad716. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/QZMZ92469463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0f2a936c152e802d19c36123a92ae462780582f113b4c238da871102f2d40b1. 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/QZMZ92469464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd58d6db9d41966460a0313b657be44093b168e0da58456975ec452e6cf29fdc2. 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/QZMZ92469465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x720fce63f576537f5ecc755576f5229685be778cda9a278153f695bf40d43dcc. 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/QZMZ92469466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93fbc7d572604269a7af45f922bc6bc2177964f8073c266a937d65ed7b924097. 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/QZMZ92469467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06add66691e8a92d8ffdc3c6d75e3c444f0e6beea7a2d6ed73d30efa7371cb99. 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/QZMZ92469468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91ba93f7c4d29570768df73378dbb029a0eac31ce0210ec2a95b119c878646d3. 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/QZMZ92469470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x198ff3b7caf2acf3e9c2cb7e3121b6f052d648dddd95c7f17afbc4b087073e88. 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/QZMZ92469471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ccfcb0923446a9d3c73875637c3c48c4285330829d3b298b7722346b104dbfa. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZMZ92469472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06e290549cd2196d06c0227204826b6a53ea2d7f4591f5288c6018eb4b621f20. 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/QZMZ92469473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6223540faf97a442873cabb62799a3619b7d3f182a3d665559b0770f52ecf0d. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZMZ92469469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb39d88f88ebde0e673f34c4609048961d210dba2ab513bd822ca0fc10455baa7. Chain 2 (Bitcoin): anchored in block 960225 (2026-07-30T08:04:30Z), 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/QZMZ92469474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa82cca90649d2d0e47b52e1568943cbafb2b5d40328435b4c53173cf7f07abd0. 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/QZNJZ2481876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x301ef9e1bc18b98518ffef87dc252392036bcfcb78734891f7ca9c4803e8ddca. 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/QZTB32350846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa43ced49e968706f305a4430bd836008fe5dc73d67874f189e6d1a5b535c0760. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/US7VG2388244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11acf8677f34553d9a69aad63287b2ebce37e4fb473b2e7dc59b75f97fae8cab. 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/TCAIP2418376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd35aeafb6e401deaeb118bf4054277ad89626bf5ad44f9768ba0c72b69a6be5d. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/TCAHX2451784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x568f9580fb247790de3e423ad4d43ebdafa3eeac58a71e3cf3b234cffe84e076. 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/US7VG2351715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa57c0d8ea610170972a7234240b3b5a83a8c45d17ff686a147d3f948e1cc4f5f. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/US7VG2486151.