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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc661bffdd0d13778953e127d29ebff049f8cb96f4d32339267c39997f5e8895e. Chain 2 (Bitcoin): anchored in block 953681 (2026-06-14T19:31:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6485f499-bafe-4c2c-9c2a-1da13f81e692.json and https://artists.proofprofile.net/proofs/artist/6485f499-bafe-4c2c-9c2a-1da13f81e692.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Materia Obscura (From "Final Fantasy VII")
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fa89eeafbd8fe6d67907757329d0b92eff6819584863821658f71690f709221. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/QZGWW2067273.
One-Winged Angel (From "Final Fantasy VII")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa374b5187d31c4986b1b94b2c8bc8f121d33144f664be480c31e6885a1ed9834. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/QZGWW1931669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86466d06571b4c6c0dfc73252c3433ef08a1cf03fb61d5eb5831a030db284fa5. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/USY281607544.
The Vengeful Spartan (From "God of War")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ab6d82a7260d3aff485377a2923c9318563d7608c4008b47cc41e952b94f29e. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/USY281607545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dd514af2c7cafffa5d60f05f67f70a9642497242bedd13a2c255d87e77f8a29. 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/USE831582823.
To Sail Forbidden Seas (From "Final Fantasy XVI") [Symphonic Metal Version]
To Sail Forbidden Seas (From "Final Fantasy XVI") - Symphonic Metal Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9238f3d624160726539571771183ac9a233f16ca840fc0c5dcff192070a2c412. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZPJ32302801.
Scream (From "Final Fantasy XIV") [Metal Ver.]
Lead the Way (From "Super Mario Odyssey") [InstruMetal Ver.]
Rock Lapis (From "Genshin Impact") [Metal Version]
Knock You Down (From "Deltarune") [Metal Version]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68d0e7a1aaa0cd374719bdf223bce666ca637b5f3831d88bdebdd4ba7793f989. 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/QZPJ32107150.
Last Surprise (From "Persona 5 Strikers") [Metal Version]
Hrafnsmál - The Words of the Raven (Metal Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c8cc32b7f4c881d158099ecc82a7d0916b554351012c3ddedb92fde7f3d27e6. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZGWX2123888.
Bury The Light (From "Devil May Cry 5") [Metal Version]
Reach Out To The Truth (From "Persona 4")
A Moment of Eternity (From "Xenoblade Chronicles 2") [Metal Ballad Version]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7850b12cd9526955c6c28ef8a83b4f4420a06d88d2dbea9e931f1c5be5df7217. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZGWW2135400.
Good Egg Galaxy (From "Super Mario Galaxy") [Synth Metal Version]
Through the Valley (Metal Ballad Version)
You Will Know Our Names (From "Xenoblade Chronicles") [Metal Version]
You Will Know Our Names (From "Xenoblade Chronicles") - Metal Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x524d94d404e968920e75150d6d498d761e78d635aa4d3d7c814a4116e0dd3368. 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/QZGWW2064567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2187ac4062e6bda82fa4bf090db4ecae2e93168f93d2b53d02ed6081c7cf6882. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/QZGWW2030748.
Goron City (From "The Legend of Zelda: Breath of the Wild")
Beyond the Heart (From "Celeste: Farewell")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x319e54b7876861ba6b5ac65668d9ecc1b75a72c096b7bab7c13459a34e6756d0. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/QZGWW1963974.
Choosing Hope (From "Final Fantasy XV: Comrades")
A Thousand Words (From "Final Fantasy X-2")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdee91e42d0150b9317368c3d0b1906d5cfd7bdc9a857dc96409a71f97f50c51f. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QZGWW1944295.
Seijaku no Apostle (From "One Punch Man")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9d02db0f6afeb3981f326fa2e6802e67c841101647e0e1796d9691e0f7a30aa. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/QZGWW2095460.