1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xcd9b80aec3b6d9afc23464cbad5745f1cf276947ce1205edb2d08ea9475551e6. 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/5630d8c5-50a4-4bec-83e3-8dbd14674c1b.json and https://artists.proofprofile.net/proofs/artist/5630d8c5-50a4-4bec-83e3-8dbd14674c1b.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 → block OTSBitcoinBlock must exist at that height 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 0xc0445ee632dbdfc42dad9d1e61126e37c7d9722f3eb2cb4f0aaaffccffb4c95c. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/PLZ991800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aae4e708fcdc49d9576610cdb94dba502e6beabd64f0228a9601246dd9f1eda. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/PLZ991800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2df8ad84f61f392b7e08b5d3393d4a3413644cc11313cdf1989f76d69d088fe3. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/PLZ991800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3adfc879b3fd28e61cf7e1d3160192ec0a24ba6be9efa3f939fd0b92cd5e365e. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/PLZ991800012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0d2f0ee5c1a3a348fcafce8e01370316b767586b95cc7efd083b0da1bc6ca58. 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/PLZ991800015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bcb213bd70838e81582ccdfaf6f7c4a2b8a37abf6751647bc1817eed0b24333. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/PLZ991800017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x748a02d9a5711a2868246fbccf17a20a39d6bff69e6813a86c8be4d04cf62514. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/PLUM71900563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d1b99d4562f42d04de8575f8b598cdea662edf0b1d5f1f33031d60693f53819. 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/PLUM72000108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x748a02d9a5711a2868246fbccf17a20a39d6bff69e6813a86c8be4d04cf62514. 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/PLUM71900563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x555f090a0d2c1cbf9b97e3c69b7c48521b15617b35b54710cc5b8e633e1c2400. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/PLUM71900676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0548580dda76941bd974eae1292ce32b27f1a2d1711d55ddd2e08e379127ee4d. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/PLUM71900167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62c46ea3844a0f8024a82c7eec4f5fd4f1cce4eee9a6d8aaf32a69b8a6fa2fb5. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/PLA552300289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2673605ed448c3b619fc7aee88c9bfe69d8b2761fa1fce5d29dfa4d8b4595c11. 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/PLA552300727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2f55dcdad51f7fdf24f68921615681446649f06be8229e5fc6141a435408fd7. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/PLB382400406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2f55dcdad51f7fdf24f68921615681446649f06be8229e5fc6141a435408fd7. 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/PLB382400406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb48bedbc1075ba86975069a0b329f6592012eee34ddfcc7e522a59025b5f28d3. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/PLD272000022.