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 0x5ee4b25070236f5ac08f82128f4aabf5ef858b05d8e1974336e50ba3a9434f01. Chain 2 (Bitcoin): anchored in block 953627 (2026-06-14T11:43:04Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3008e37b-78c0-4395-a18f-862db50ae3b9.json and https://artists.proofprofile.net/proofs/artist/3008e37b-78c0-4395-a18f-862db50ae3b9.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 0xf908f02196838ee6b1b151fe7e274aa6cfc70c646e64f068c8ae7bf93fbc00c3. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/GRFM12400381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c99914a3ac5701acbd7edbedba4eb00b6c518bcd6d8643135f8b97c01658ff9. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:51:01Z), 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/GRFM12400382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc53da453d85aadb0606fb751754db1420d339eaa986dfc4fda4e619dba4a1f36. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/GRFM12500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe72d3bd055ee32cef38fc80e002de20ef11e2962f9f75a9a9fa9b2e6d0153d43. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/GRFM12500067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf02f3b709ac15080a8c8cc18e5a39a4d660f42cb75b0c0d99ad989b03f6f2e51. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/GRFM12500068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2bc106299899e6bf3d4e7303fdb266f5abb110c0f05700c7578aa3e86437911. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/GRFM12400368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd8e4b32f1c95e83edd6cffcd2f729ac2512aa162f2222eb082a253b60d3c1d0. 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/GRFM12500070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6b0ac4e8bc49fd5e95c3d99cf19fe0d587e1154da2a2a6fd58c3c0cbc0dc8d0. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:07:11Z), 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/GRFM12500071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22c8feec14c608a18132e473ce6aa3cf4422021570eaafcbe2c2a78f5c8f9c42. 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/GRFM12500072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79312dd7ec24db1e0dca8bb5c8ce4ee41bb25d90e544b6e977c5021b3dd06690. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T11:09:07Z), 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/GRFM12500073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4eb2da2a453ee2990d33793e2c376c9bfcd9522fdf9483275b35ea1dc0df045. 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/GRFM12500074.