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 0xf0e0f3dc7918a1253f69cfb62a2316cb7c3052a51644745bc71e575d83fc7115. 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/94c8b093-7156-48a0-93bf-d408b8a5d523.json and https://artists.proofprofile.net/proofs/artist/94c8b093-7156-48a0-93bf-d408b8a5d523.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Out For Love (from Hazbin Hotel) [Cover]
Out For Love (from Hazbin Hotel) - Cover
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 0x451eaaf833710d93fbc68cd5e009d5160d83639add4f3bb1a96bfd4d835b2831. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QZPJ32337881.
Hell's Greatest Dad (from Hazbin Hotel) [Cover]
Battle Against A True Hero - The Heroine Remains (From "Undertale")
You Didn't Know (from Hazbin Hotel) [Cover]
You Didn't Know (from Hazbin Hotel) - Cover
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a813f11193acc905f58dbb954d7ebcd4590f89a3254addbf6ee8595ca50b71c. 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/QZPJ32350864.
Aunque no crean en mí (La Leyenda de Korra)
Stronger Than You - Chara Response (Cover Español)
Warrior of the Mind from EPIC: The Musical - Cover Español
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06ce18593fb8037d033f6932a7ed48c70bd872a4b0e7ef3d64f87192b2404270. 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/QZPJ32482623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bb9eafb3912b277b14fe6dcf1bf0088c39c8a20d339e791e5708f45eefd1d11. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TCJPT2224102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x062ca1c1471f540c23cc2a289f63d22e5fbcb7febbe5c10401046c00f7a8d9cd. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/QZFZ22489666.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch