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 0x9e8475661ea6f96dd5d17741c9d2b9edd81ae3c24854574086fff1381b93dcca. 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/9e3bdd06-8629-4978-bd4e-092984a1353b.json and https://artists.proofprofile.net/proofs/artist/9e3bdd06-8629-4978-bd4e-092984a1353b.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 0xe87e961a02cc7649e80b452d4ae7cd15dfb1c5f4246d8e4184f02f879e4b4460. 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/AUHS01204809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x044ae53d111e8864bfbfbb5bdac5b7d665cccb15674bf77ef3cf43d75bbd1590. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/AUHS01204800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbf5ab2139c85c79afe54a8c8c1d8963754a73c4a3a836f50839e233d6b73b56. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/AUHS01204801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdc515d1827b04c551ddf259bf7169b2f59ea8626fbcbcb638869646d09ce2dd. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/AUHS01204802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe61545c6d277edadc3879647339fc61885d1d4926146def786397a253e49e13e. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/AUHS01204804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4d2bfd8c5e4db07af18895211d02e8f08520f027e9ccbb222c747c3cca04759. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/AUHS01204799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f90bb2ce499db46910ab9d861ba57c232639607e0a9534572d84d1c82685e9f. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:49:28Z), 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/AUHS01204812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe87e961a02cc7649e80b452d4ae7cd15dfb1c5f4246d8e4184f02f879e4b4460. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/AUHS01204809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe61545c6d277edadc3879647339fc61885d1d4926146def786397a253e49e13e. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/AUHS01204804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4d2bfd8c5e4db07af18895211d02e8f08520f027e9ccbb222c747c3cca04759. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/AUHS01204799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f90bb2ce499db46910ab9d861ba57c232639607e0a9534572d84d1c82685e9f. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/AUHS01204812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2ecd63eb209d64c6f998f7f651eb54ec97efc04b08052f0df1f11eaf9081e69. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/AUHS01709327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0aa5c58d5f1c6d7ed580f5dcba9802b6647b8f7c837a23e43d4089f1e86fb29. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T02:00:18Z), 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/AUHS01709404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2ecd63eb209d64c6f998f7f651eb54ec97efc04b08052f0df1f11eaf9081e69. 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/AUHS01709327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e6bf4be71c5f9fe8045c6cea3faafd46b51e510f5eb20e7e21fa9eb7b03d6df. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/AUHS01912687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50316eb56208dbec24b1c1bb87497768f14f8ffadb6e001ec07fb05c31b3155f. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:08:19Z), 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/AUHS01810095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9a49270fa155d7c30b30459d49c8ae95fe421bd4673e2b4aa4b7db0d1c46cc8. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/AUHS01811080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11da11a727687b0f0491818db3da1808c257e81a679d127d30674015993c2378. 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/AUHS01709731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e6bf4be71c5f9fe8045c6cea3faafd46b51e510f5eb20e7e21fa9eb7b03d6df. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:52:51Z), 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/AUHS01912687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c27370bab4dbcdc5e976817d0c9a012874307b4a711817aa3d822f0554e2896. 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/AUHS01912689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec4f1a4d031ec0f76ab6d1cd4f3fb3b1a4323bedea8fef534e467671a1167675. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T21:20:06Z), 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/AUHS01912692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9a49270fa155d7c30b30459d49c8ae95fe421bd4673e2b4aa4b7db0d1c46cc8. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/AUHS01811080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11da11a727687b0f0491818db3da1808c257e81a679d127d30674015993c2378. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/AUHS01709731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70e1e228c555438dad769b8f72eab9ab0fd0969139a1ef5bc871e29659e6a63a. Chain 2 (Bitcoin): anchored in block 958602 (2026-07-18T19:28:16Z), 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/AUHS02114559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fff9544c55af7619268d9aa374a9009bd3a663d24abccb177a560a943fc2172. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/AUHS02014043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef2674a9b1b2b18dae99306a841e0b53b731228f985df92721a667075b0ea0f4. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/AUHS02014042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ef1fd9320d8826c65d1f6efd8f5c886173c1b3643e061e5809393aed97ce398. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/AUHS02114869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0f4345cd68c876aa51a5ea92d3fa6cf64fffd106455718e77f47a2e95ffceed. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/AUHS02114878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ef1fd9320d8826c65d1f6efd8f5c886173c1b3643e061e5809393aed97ce398. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/AUHS02114869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0f4345cd68c876aa51a5ea92d3fa6cf64fffd106455718e77f47a2e95ffceed. 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/AUHS02114878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9b5b14707bf084e59299e258e1db1564635bc6f57f935f2f977c4e94b23720f. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/AUHS02215622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9b5b14707bf084e59299e258e1db1564635bc6f57f935f2f977c4e94b23720f. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/AUHS02215622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x311a3b2b4973db30e1c42c522aaee7134b99221f859dd1b9e207eef680980620. 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/AUHS02416321.