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 0x79e70c8a8f982632689456da668bd89cd80f823563001464a04ebe372cfb9240. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/43e8768a-ae56-42a8-8202-9aac380103e0.json and https://artists.proofprofile.net/proofs/artist/43e8768a-ae56-42a8-8202-9aac380103e0.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 0x19bc88ef0d9a4ab2562a2d6ca8e89adce8833ab92e04b1c6ab0ca290f48c0246. 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/GBSMU6349883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcde6def95d54062b98b8f44e42f5aa2a7f7922170f6d74928dda649044060f52. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/GBSMU6349885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31492a716f3f232d91174094922c3a6cc319fd4b4d479b0716a990d78ae26a42. 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/GBSMU6349886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba9c158063d753df1dab9c545f66e2ecce1c53a27faca8d11709e824941771ff. Chain 2 (Bitcoin): anchored in block 957761 (2026-07-12T21:55:15Z), 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/GBSMU6349887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7ea2bef1a030db1118883cb868648b28f3ccb7a38e9ea48852fb4e6e71677f4. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/GBSMU6349888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eeb968d5bee4a309de89c61f086058b7d572f6054674db871d82b4da1346df5. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:51:05Z), 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/GBSMU6349889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c566898d75523e65ac695095e94adb4d5d738dd32e6585d50931dab79f6ca05. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:19:40Z), 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/GBSMU6349890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a7e5eb8cb083e05729ffadbe25184fc139ade8df5f45456c5e1ffda322220a. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/GBSMU6349891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa125010813ca26cff08bf52fa379af2ac4ec8c115b9c9f166a9a9d717eb3c19. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/GBSMU6349892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce6f16c237bcf68529bb8bde69358c118c8a2a40108f7530047a768c530f95f2. 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/GBSMU6364920.