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 0xc255c979f49843437f2512d9fc8e06ac94403be1691222a8b74fb9e612512ebf. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dea04b34-8031-4127-8e79-9bf9f4f825a2.json and https://artists.proofprofile.net/proofs/artist/dea04b34-8031-4127-8e79-9bf9f4f825a2.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 0xbdd7ec829e0ad746e670431881f0e561437790aa323dfc8f3498bff5b96c463a. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/USHM82327029.
Tu Castigo Será Verme Feliz / Palomita Cuculí
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd62e1460a86c5b93c8b51416f9cd3cb311a0ee651ada52e578abbaf1be774008. 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/USHM82327030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa64aeb150ef75a506bcf490b2d3b3f5ce7164ce43c89902e8706fd1e7546d68d. 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/USHM82327031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80256ebe900c83cda393ef97d9cdbaa31d7fbcadf5e240d65d7eb46fecf30da0. Chain 2 (Bitcoin): anchored in block 958828 (2026-07-20T07:57:34Z), 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/USHM82327032.
Borrachita En Las Cantinas / La Ley Del Amor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ab3475a031468eb3b67df270d6a25ac887ad7d380a90daa493ba896da26ccfe. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USHM82327033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb031dba7c00d797634d64fec69f6f834544265428c454773c665279986ad415d. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USHM82327036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x684a1581553a157fe0f46e676f57aa086154a2466898a8b2a5e83716456c6fd7. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USHM82327037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63a78749a4c8f88464f433ba4f019c781334388d9c37c24598c655261bd9141b. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/USHM82327038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61e65d73829b47812a3e0e56acf35d0dcce4552e38f473938918d2cb18891163. 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/USHM82327044.