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 0x7ec20767af7e16bed01f971276c0ea29780f884af58b80050e0387c5d3599d1d. 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/fd33529f-c061-4dfa-af0f-ecd1605ef54c.json and https://artists.proofprofile.net/proofs/artist/fd33529f-c061-4dfa-af0f-ecd1605ef54c.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 0x0473e5fa6a87eccf6ff4bb42e111b70f4b4c3aa985c75f1a8ec268bf82d6aa27. 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/DEAR42286586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe377ebf1933b169c25a558650eb88371175fe59840fc6126d69cb9f2fe2fc404. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:37:50Z), 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/DEAR42234411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57e9875eeff77c7168eec1e4c3d87dce2929931fd4183d852218d9b5f73054b0. 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/DEAR42291159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4ec9f8fae050d1335e6c1189029485b01897de25d00cce667812d45f23aedc6. 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/DEAR42275350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b3a8a7b9215a730e1189c968d7f0334e382bb21f5e9918adb58d60ab2aa17d0. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/DEAR42240208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d8d978baab7418d843050362e02bb593250fd0b3f93fe7e6745a100842389fd. 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/DEAR42284755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6cc18da966a73a3de283c3e8c298e99152c6d37fed5891fad0880208758c207. 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/DEAR42271527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc28e8191b9da5972e24eb3a29f8008dcdec9500ccd9f1e76a31c185acdd6d5af. 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/DEAR42220276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56a34a3369378df0c48217768166ab36b3b9869a8cb7df842d2ac4f3936d44ca. 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/DEAR42178285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x695d75f7abdc6cd884ff526901290c462a31e9a945d9727dd11b310609fec72c. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/DEAR42123505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2443982bfe42dd8606b9e4a1f21816c9c50524b9ff317e72327047b3894bbfbb. 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/DEAR42180382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ab99bc19328d01c418cf42015176074a8acd9e66ac10d99e08253acbcfa03eb. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/DEAR42129881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc81af83e3c3f042f5ff1d0b9e4f705313a8efadbffa8997e36ff7ce8d15a8266. 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/DEAR42168684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1279746f8e32ae639e0660cf10cb86b6388b7ba565b14e1ec16f07458abe88e1. 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/DEAR42134141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35c08d51dbf95c3aae3bd2fd1d2321613a6ff3ce75b122099ed9694d9d34cc43. 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/DEAR42367067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc37db6160a440f73755966ffcec44ac4218b94c07807523cc6942107caefd5b. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/DEAR42370341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x629602bd0d3a522c5efc0fd387e825b9a18a98f8254131cf3d4e1f78f000af71. 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/DEAR42366083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb7936948233e2c7bf2f4afc4528044232724fea1ce73cc0959c5dc1252610e6. 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/DEAR42042586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ea6180bafdbe2781e032e3d2a891a8edd8e51be1d4ed002021aa2e7640de115. 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/DEAR42055557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1514fab45c826fd869ea8df3a326a5d270098c3b65db30efaa618f571e9435a6. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/DEAR42189229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97d9169b55fc7aa0a6ca7162ab4b25f027e36d9263ea1d975abe39a2cec87676. 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/DEAR42151461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d2a8e455f0cce39385d436f66affb99f1da20ec8886f3c6582d19cd2de778bb. 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/DEAR42124817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f76885cec851f14eb01a39d0e2ab52ca8b36de2b08b3a479266043acf608e8f. 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/DEAR42165442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x794ad4645dd9b28a19e2a855360a1ee0db4b70ceb05f87f91d335a7e3aae44ed. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/DEAR42137046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1af4149ef91d3d4581cc15451ba02cb5c5fc65314c50602c2e211d968d36e6ca. Chain 2 (Bitcoin): anchored in block 958378 (2026-07-17T06:45:39Z), 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/DEAR42138560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4625fae1e4cdb5c4f0afc83a8cb5e5e1fb9774c298c62dad22a3795bea4e94a1. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/DEAR42132727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x982566221a75ea4d28ec7810ac8e7ffa13ae16883f5ef4ed83a5c835bfbe17e5. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/DEAR42050046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e8e96204fdf0ada5bf40cd6bc93f068b265d37be8b373f08c73446c7e90eb38. 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/DEAR42144580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70e9f008a9de75cac5f356cf55056ebe987afaf1afbb83242bca479dbf962f24. 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/DEAR42388598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e221e0526a46fb156fa4893600da9ba28959f056a53fbc5bc5c56d8a99030fb. 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/DEAR42375421.