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 0x56375e1363a9df2524242dd018594b9f7d848826d17947cda61a72bec911e340. Chain 2 (Bitcoin): anchored in block 953596 (2026-06-14T06:21:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0b270fca-d6b4-4519-b56b-99b638b264cb.json and https://artists.proofprofile.net/proofs/artist/0b270fca-d6b4-4519-b56b-99b638b264cb.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 0x37fa8b35b82d802e8a18a2f6f240d7ba660c6dce79c50dc67b563ef62b1cb373. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/SE6I32088832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e33bb00b191a03a90d95c154ce1461ec169be440375a4e1a675c6bd428844fd. 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/SE6A92051511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e1a65015aba034f515f80391b3a46a1c5f9393ca2bc4c78a7597758360aa328. 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/SE6A92110312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc777faf3d5ab80e603f4c3e5d16b4740c4f4c6182bb51c5a2c471e43bbd2069a. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/SE6A92182216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6f05c7951c1e0fe6ada827b1cac39058e5d940c65193449111ba84ae13dbd9b. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/SE6XX2169284.
LE SOLTARON LA RIENDA AL PERRO UNDER SIDE 821
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x656b119a47061a9be0736171ba7ef6048ff8adf4a17904db786434c1847d0390. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:22:26Z), 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/SE6I32261055.
CRONICAS DE UN DROGADICTO UNDER SIDE 821
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb95aa2e0a672c925aee2b857c726e2290d1706f1369db086a3cb8247b5431e39. 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/SE6I32291555.