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 0x12bb8e5c91581da09b9dac9624b152d676aa30a043db0f17d71565941f75371a. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/42252bef-7139-4758-bc7a-f19f76e8dcea.json and https://artists.proofprofile.net/proofs/artist/42252bef-7139-4758-bc7a-f19f76e8dcea.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 0x2860bb8131a4213ad0e4924c874b2f54823f1b81dfe71405320a6f6bb5929efc. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:05:33Z), 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/US3DF2403240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce05cf4efdabdff1ecb71f4431a4eb6b6a39e29794c7bd1c8d6b3495ac0b8435. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/US3DF2403243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48be5599c0145cc9fad21d5e44c46d7a80cb2d10968faa2a7d45e83eefbc8bec. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/US3DF2403633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10e4b3ebf14c62ba0c054d1aa71ece316aaefb99e7647ac7c34683bfce0aea5d. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/US3DF2403849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3363148a0264936fea374f56423175c2bcf0c8dcdde77a7170432fb5a1a1edd2. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USJTQ9300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14bc410eb8fff6e1ce3018243bdec8f32cc5ae01f104a101743af5db04c9fb49. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:17:32Z), 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/US3DF2403853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb21bbded13eb4568a20fef1fc6ca64290748c00a3cd7fb887ba1acd724057249. 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/US3DF2403858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1665d2f716dda88f779dd52b4a1ecf8c8c1ddb2a98433afbc8625a4746bac457. Chain 2 (Bitcoin): anchored in block 958920 (2026-07-20T21:01:30Z), 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/US3DF2403861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc17c3bc8be610de65c374bd87e45883289a3747c7c936f352d97cf1d6cbd269. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/US3DF2403893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa65fc6272a8a28d51b8eead254c27fac90fe866a9327a675c30d400376cc9161. 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/USJTQ9512958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fbe8b18ec4f7bfe2fa695a3bb4be8809dbea0b55cda2c6ad4034647c05a94a7. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/USJTQ9512963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeb19f1b445e8baf92702f158bf4c75fc147db8518f31f2f8f92a641ab92e0e3. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/US3DF2403973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cfbd7a93f73b94c914127e27affb7e169d09fcf65d5f30be347cccc68e8ebf0. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T10:46:42Z), 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/US3DF2403976.
En la Ultreya Provincial de Mexicali, Vol. 23
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30f8c3202d25a4bdc51ca45bca014bf1cc5e4fed15be950d3fe99812ce45b1f1. 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/QM4TX1889756.