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 0xa6c2c06e3d8eee216c40299c2c659e09d4c0d5a58a300aef167e386a9ee03709. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/58d6efec-074c-44b3-a1a6-ba0d4f30dfc3.json and https://artists.proofprofile.net/proofs/artist/58d6efec-074c-44b3-a1a6-ba0d4f30dfc3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Truth Revealed (from "Final Fantasy X")
Title Theme (from "The Legend of Zelda: Ocarina of Time")
Aquatic Ambiance (From "Donkey Kong Country")
The Man with the Machine Gun (from "Final Fantasy VIII")
Blinded By Light (from "Final Fantasy XIII")
The Opened Way (From "Shadow of the Colossus")
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 0x01a3224fb1e279bbbbabe9c2529edda5117052fc2ef5050749853462fc6553cb. 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/QZGWW1934108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5509e9a0969b15d08ad8c987807ad36a081e99fe16bdfe84cc84c17cac6f679e. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/QZGWW1946303.
Dreamwatch of Time (From "Chrono Cross")
SOLDIERS: A Final Fantasy VII Compilation Tribute
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6930f0e33fe7c02a2daeff9b36fe2ea133315ff63274b18f4c6cdaa1773225c. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/QZGWX2059722.
Encounter (From "Crisis Core: Final Fantasy VII")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0b9d8f8ba53ff7fa7a111f6db72d36e49dd4b602e81e6dd5bd5888b1f93b5ab. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/QZGWX2059724.
Under the Apple Tree (From "Crisis Core: Final Fantasy VII")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44ab267d766a718375ab91a19a4f287ca3e616af693b8bcd9093b413a82d5826. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/QZGWX2059725.
Why (From "Crisis Core: Final Fantasy VII")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde45b55316a073463a828b9b2bb4c4cc6601c78323a2db53c6da64131c39e260. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/QZGWX2059727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1634cb75a17f561309ac0841e686e26a56b96ad5228dce6fa1e4486e0f99a41. 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/QZGWX2059728.
Those Who Fight Further (From "Final Fantasy VII")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b9bad66e533d5637e3679b8e03a677587c12afdef6c2e7cda20a8a4d7c4a2ab. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/QZGWX2059730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc755a5a58a752970f1f4e49d59ade30814694bacd53e619f21f99780bbcf594. 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/QZGWX2059731.
Interrupted by Fireworks (From "Final Fantasy VII")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07cf37d010177d41f07035a2dd3595eb8dbd6f71e069d1579f0ca4811e9d2b3c. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/QZGWX2059732.
Beyond the Wasteland (From "Final Fantasy VII: Advent Children")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd84f8f2148099235904ec2ebbdf02fd4cdc1f00e932eb24a9e3cb3d9a27473ac. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/QZGWX2059733.
Hollow (From "Final Fantasy VII Remake")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9abf4a5a05a9bb27e08f143af4d947ccc98979bf5c8283b6a840c08982adfc40. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/QZGWX2059735.
Plains of Time (Home World) (from "Chrono Cross")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9717d56556d8853d3ce66824b5d508a6fb9dbfa673d75aaa0aca8523ff0533b. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/QZPJ32111069.
First Steps Into Sunken Glades (from "Ori and the Blind Forest")
An Early Harvest (from "Everybody's Gone to the Rapture")
Secret of the Forest (from "Chrono Trigger")
Hallowed Be Thy Name (Katherine's Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x687efaebb37a4508beef4db59d049abb8077c2960a38a82cc3f43135468cc33c. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZGWX2001109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcdf5a665bd7cf458cbdba0c0b75e182c6e3323d8b5af0e4c4b85db72a480bee. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/QZGWW1937960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f2426e5500f8d1f09c909b196b9b26c3c42206647b39573d39baa416bc53367. 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/QZGWW1937964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79144f672e87a12e781544abff417bc0d8965acdb54580196e175331464e81fe. Chain 2 (Bitcoin): anchored in block 960218 (2026-07-30T06:57:05Z), 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/QZ6K41900262.