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 0x4bd9a4377cfeb86b64f9bda012ec32971e73349011d8f85c3ee7b6c4c7a725ad. 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/4545500f-b01b-4c71-8904-1771a7d7e838.json and https://artists.proofprofile.net/proofs/artist/4545500f-b01b-4c71-8904-1771a7d7e838.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 0x34202747c98c1a5f7d19c525664754afc85101524fae4eba8ffc45dbd1368907. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DKADG1900230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0315ce0dbcf1e2b71561bea3a0c6e5f54353661424953bee7ee1ab1c683fba50. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/USLB11910020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeefc08b9ca6b376b6ea0fd8b9621909ad8555c0437b82ce7647ab2d6dcf57112. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:52:55Z), 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/USLB11910022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e5eb865b7b0ec39e90033b381b6fbb099c383dafd0d11eb7f87586c83d21205. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/USLB11910023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5de9facac57e4c3689b7d9dc8b52f87be55503c20268c151e99ee91868c9c582. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/USLB11910024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0fef01f415ae7bcb84031a4aa15500c7d8bfbb237719aa7b5e6b32c01074f79. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USLB11910025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dc0e4d9330c8f1f83e4f566d1d41c7aebfbbdd6626077283282d742d634b0a6. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:45:46Z), 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/USLB11910027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bff249e797e81693c293a2c755b4a19401724abff1b589be03c27f44c5df652. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/USLB11910029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9f7c5c57ae0d67608fd275cf2e38774633fe2fe3ef7f7ea19815c4ce254bf1e. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/USLB11910030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f845217b51b28270580729fde230c266a9d5586187214a8207ec31ed417b5eb. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:03:38Z), 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/USLB11910031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e122690ebf6908a6a54c5e5540befbc61238cdcde06c7ec69e6d2d9ed02b925. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/USLB11910021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96a0aa4ed45ef8a396441fc0a02da3121af42e3bb9a78e4fc1d64c5b41368006. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/USLB12010021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98800f3cc706dc26af9b1551816828907efd0fd40d39d364c40d22ad27d3cff9. Chain 2 (Bitcoin): anchored in block 957642 (2026-07-12T02:46:48Z), 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/USLB12010020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42f91ab8b1d8d7ad64d9cc496bb3cee74f757f9106443ec9ef75ca1795a155e9. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/USLB12010022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d05b2fb542aa3f2367126e7cd6a890c098eb75879466a88e7d7ba28795d1fb9. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T23:45:44Z), 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/USLB12010023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x992f39e3d684756b3002a9172c1c7cd7ed9a6ef6ddd80138aadc6c60b53194b3. 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/USLB12010024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3f70dd723bdefc8f828a904ce26fd2d33bd0866948f0a9c5a99a65dd88cf3e1. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:17:10Z), 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/USLB12010025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7f4d76facbc669f34637289a460990f9b76df9fb81564de13bd656d52dabf6e. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/USLB12010026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbd868cb37ce55a2f957b3e24ba178eab4d69805a50e18db86f030b659c1801b. 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/USLB12010028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x356e481f47055b5f4a62e2a1d8a39d23d74d429dc923039cfdce92ba2447434a. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/USLB12010029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb03a4abe4afbc56fa2fbefb03e2432799e9ae9bd11dbf9a0f1284f4d8e27f1e1. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/USLB12410001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7b8728f3a0e71d8fdabfbc074e5d8e42f23bfbe6aa4658ebb0c95f1efbe85fe. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/USLB12410005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21b3ba30aac6aacce2bc74a695c0e6cfb022b32155a93ba4e6a6bb43d31c52f7. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T08:24:22Z), 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/USLB12410006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37d54b145ef459a3da0472515c7ae5c49361db828bbda591b413ec832936287f. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/USLB12410004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecf10ce9af3facbc83eebb90945787a2f145e69fe2b558360c2148d5e72c6130. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/USLB12410007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x460807166971eb6d72b4c76f5a34e53060c2203463d3576830ef1c02231d8ff2. 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/USLB12410009.