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 0xa39af32b6074e9c28ad8a0b7c88b9747916596e8d01f704db9a8af8811072654. 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/596b51e2-9776-4fcb-ac87-7723929570c8.json and https://artists.proofprofile.net/proofs/artist/596b51e2-9776-4fcb-ac87-7723929570c8.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 0x1a8c6d043dab29c9ee4a2d3013517d7c253c8e145e19de94a0b73aab653675af. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/FRX871584057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b871837ac5bccff2ed5e61ca135fd7be76b9e784e8a8b7de6a6f8050a17a7fa. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/DELJ81603342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5f5216bec08e759fc38080148caa0d152b04c4b1be5f9ace6ac156311a19655. 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/DELJ81753418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2de5c645936853d13fbed165c17cf9136780a7b3accb3824733cede57c4ce84. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:22:11Z), 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/DELJ81759753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8572b9a481f40fa80e50a0e6b75f2ceed0a21c72f80aba3f1d03b40498afd45. 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/DELJ81804221.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed3e515a668ab671bb73421c33665362b3ad844064a3f07ba47f2daf9b058bc1. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/CH7812176582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x664871e557741725bd9dbf76a1721f69006f2c2f9bace9886068d3f289cdf118. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:27:43Z), 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/CH7811933399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x634d16f860579b30cb83ac3b214afcfd6aa01ebaabc8c23af2e1c15e58d0052d. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/CH7812176758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aab05df705208f5feee33c4d4189c464e0f51d18416030d603759f9da131ca4. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/CH7812178504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7a86f1d17de06437310f517d7c87adf6f3ba1783f005f605ec0628403e53233. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T16:44:56Z), 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/CH7812178935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf5d2c5f4c0bb44879828df17cf4b7aeaae0a9ea7faefba4bd92683002f90706. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/CH7812178936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f8baf1ca919e8d9a0b1a1bc8413c8044e94664672ede4be695b04e4cf894c6b. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/CH7812178937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a3bdda33584eb5f7c9d5f38093cff9a0bc4ee994bfac1e658afaa46aba47667. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/CH7812104233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaf8b5995ae5209f4110127c4e6c6a7e73954b03c19242f1c378a2c0e3795f14. Chain 2 (Bitcoin): anchored in block 958143 (2026-07-15T10:15:04Z), 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/CH7812221396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09489fbc2cfbe12925a90f1c55a2d03d6dcbfe7401a609b0380b960a87a4e5c4. 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/CH7812223318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x552fdbcf03824323c6378c657490ec3ffef61f5621e633a16aeece2492434033. 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/CH7812227347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaf8b5995ae5209f4110127c4e6c6a7e73954b03c19242f1c378a2c0e3795f14. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:31:20Z), 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/CH7812221396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25f47825b906e57b301d888f4f2c1c49a1355977f4220fc2305479d172928cc9. 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/CH7812231716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x356c57995824b4bb6d9639ae7663a97756e4ca4544e78743103c07130fa1801f. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/CH7812233007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x878fb332ad0c64496a1ca1e68f435084aac14e06b9117057c364d6f1fd7cada8. 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/CH7812233008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1ed8262a6481c7d1194b76b1f6aa82132c7b790542cb5bbfc5c0a0b5fab0fc6. 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/CH7812528012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdb081f1de91a96e195846d5646e3b7c676cb95fe50b3f8fef8be7ddc813259f. 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/DEFN82011019.