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 0x54311d92512bdd4a87be4aea0d13c5d454924d0fa1b2391d443617be771e8071. Chain 2 (Bitcoin): anchored in block 953707 (2026-06-14T23:22:21Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7dcb4947-d3e7-479e-a58b-ec29a8ddb845.json and https://artists.proofprofile.net/proofs/artist/7dcb4947-d3e7-479e-a58b-ec29a8ddb845.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 0xbcf68facabd50b321ab6b344bddfd52b79356271b8ae862430745162325c002b. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/US3DF1548454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56fea179cebb71c9ed29e19f63dac8e62b2bd1c39120519b11f747d173fff4b4. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T02:26:14Z), 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/US3DF1548455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x278305f2f50bad6cf6a8630c1947b9dfcd1255406b64214694718ec756f94e43. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/US3DF1548457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb77a44defd93203f7201a0cf224e4d2a33f468a771522e57aa2151187392c5b. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:05:31Z), 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/US3DF1548459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9269c97e21036bb31270ddc72b72bb91ae24b68322276c589a4754e87f8b552. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/US3DF1548460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb0483738d23089739623133bc457de8048f7e4744126dfb8ace5cd8c553f3a3. Chain 2 (Bitcoin): anchored in block 958971 (2026-07-21T05:04:56Z), 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/US3DF1548461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3c1f770ad70f414e51328a39de13aacfb12c0b2c88d186729a3df7eddc8095f. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/US3DF1548462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99bdd8958c03f05e06c22c91386f85994ba9f65cafb87033b183ab0b30b237dd. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/US3DF1548463.
20 Tequileras Pa' Adoloridos Con Acordeón
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x315781a559b0d7f30c49f88b15c33d0f5d0297325ccc15839436b920cf3dc9cf. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/US3DF1817053.