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 0xcfcd66d4b079b1100dd8758dfb5733a47753b5b2809d003cd50d817b9e565b52. Chain 2 (Bitcoin): anchored in block 953759 (2026-06-15T08:04:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b415a579-301e-413d-bbd6-27fb2d4e048b.json and https://artists.proofprofile.net/proofs/artist/b415a579-301e-413d-bbd6-27fb2d4e048b.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 0x91d5ec3d4f4f280e13cf6a4c9686b09fb6c67f7f825b3d235b4408b5de6a68a4. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/GX3HH2201552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21d935591d52b5bf4c16a930084b807f725046a8c500a69aa96869b0f0d7ce24. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/GX3HH2201553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d98166833ae6f8fc0572842504d4decefd653a9fd02e893ba858e102cc3045a. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:04:47Z), 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/GX3HH2201554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4131f4c88ef593506820a29bb41bf00fb897a7232a6bd12c9d7f066ec1c6de27. Chain 2 (Bitcoin): anchored in block 956430 (2026-07-03T02:22:42Z), 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/GX3HH2201555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f8abc8abcf4d05b3dabebc2ade3df549120006cc10a34ed8b6f77f14cd9204a. 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/GX3HH2201556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b9be7a23cab834879f8965aad0e8800ca222f38f30a45686f2369a367c1a971. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/GX3HH2201557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e611de7650fad01915d9321b948d4406efef6dca1e8f75eb7d61ff4492275fc. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/GX3HH2201558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54e7b5d33a45f381d30cc1c7e378b401467861c5ff35ae0d11d4ae904bf13d96. 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/GX3HH2201559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb043994aea7710ab93d0e86b3fae7b9cd8231b8c6554d8c2a3a409ba8faba3d. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/GX3HH2201560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x393f393c382709d8f043f8889d3513f5c702a080ef571ab6f3f3d61c15449497. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/GX3HH2201561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdde51abef48c1e0b54c4f4b3006e4377d243497d4ac43ffc80e82b5e5f31b308. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/GX3HH2201562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10d4015fffa335d72af2aee2f5b385907c726c148d537a68c542627c5287beff. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/GX3HH2201563.