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 0xd19af2a86ed41d859358460c6ba6f6791630343ed4f74f28d549744ae856f803. 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/f1364d25-f412-4749-9c48-1dc6baf821f6.json and https://artists.proofprofile.net/proofs/artist/f1364d25-f412-4749-9c48-1dc6baf821f6.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 0x59f5fed15a7f9674e41eadb3f1518af58616879dae21af1edf259074f2424288. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/USAM70422801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b225d9f3c7be2a7f7389afa5fe647a61bc4fa54c87466f522709738c495640d. 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/USAM70422808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15373b268039764c50e089608a256b34b127e3986c50d8cca98351c6a487c309. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/USAM70422810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa43ccf37a0fde39813f54b4239bba02833c842d3213c16adb14032b0f981375d. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USAM70428203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5a2cb242af4f659b543a07ef7a04d2650bce2015c91a2a7a4721fd82af9e1fb. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:37:41Z), 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/USAM70428204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29a0f24c2261ff5bd959b4de19c68e77d475479b6d4a9ba5d1cc914753eedaf4. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USAM70428306.
Esta De Parranda El Jefe (Mas Corridos 2007)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa552084c2c1736f2b3ab9c4b01ebd42083cafb12f28a9c50cc3150aea1d3f6af. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:58:45Z), 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/TCABS1359219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf294dcae92c5ad1682e108d9d60d27a1dee6aa52c13d5af97eb4e14da9c7c48e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ESUM72500136.