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 0xffaba26f9d515ba1fe9a8c57f12f4f2475b4a51409f8d31c15933c84ecabb05f. Chain 2 (Bitcoin): anchored in block 953777 (2026-06-15T11:52:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d07191b3-1529-41a5-83a3-9679523c9830.json and https://artists.proofprofile.net/proofs/artist/d07191b3-1529-41a5-83a3-9679523c9830.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 0xa1174c69ac10d08020a45e6209f63feb9aedccd5cf7acbe626d82aba2f617bfa. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/USDY41898038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd10dc7924c39dbe765cc5adab0994a935f014a2c2b7700b4247ec08ea41b7d3f. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USDY41898040.
Popurri de Cardenales: Si Yo Fuera El / Que No Daria / Necesito Decirtelo / Belleza de Cantina
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b398e49728f33f4792cc342053b3a4f5e2038617c6e806af79d9164a300348e. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USDY41898045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6d658844030d8f72f98c84481fd29cde4ad3cb996a66b6e626ad8c698d0b56b. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T18:18:26Z), 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/USDY41898046.
Popurri Cadetes: El Asesino / Los Dos Amigos / Prenda Querida / El Palomito
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b4a0cbb57bdd0c0654461255524cc543132f0b8621652aa4248517fdf792541. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:14:45Z), 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/USDY41898048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5baf98ca42a2a353ad08b8f1c5e368f991a313c9cd2bc62abf6c874f5a8a3741. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USHM21810497.
Mambo Medley: Cerezo Rosa / El Politecnico / Rico Caliente y Sabroso / Mambo 5 / Pachuco Bailarin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2221480d889b09957806ab773259d15b647b7084292898fcf6c012ba183f891d. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USHM21810499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf186f386012f1b127ed74657574cc5df1eb6aeabdc6eb6a5949f6400e9fd475. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:47:33Z), 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/USHM21810502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41b0b202004d949bd286c8e8c5bf4ca9fbb6a7f5f233526ccdf853458f8f5951. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USHM21808333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bf397d88745e907d578d221f61637f739eee7858163dd3c99b9f3eb41a2f15b. 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/USHM21808334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7713a08f146fb1ada7830686e998e4142089515306e3256221c3d8863bfdd860. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USHM21808336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaa2fef98555c8bbb5b88f73b0e122b41824cef9b74a6b1cdbe2f3e7cac0538a. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USHM21808338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ca9183129aafb3f4825d0108d26890568d4f16f4a7866815092ddfe4156921b. 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/USHM21808339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3eae161e2880ca51fe04fafd718bf568813a4eaae5dc3be61d9ebdd0c44c301. 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/USHM21808341.