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 0xa88060057a4a439c8835c65513ab4f0ac06d7215f1b74d4e8dde72e1ee5f8f97. 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/e3bb3317-e4fe-4f21-b380-a86fb3503156.json and https://artists.proofprofile.net/proofs/artist/e3bb3317-e4fe-4f21-b380-a86fb3503156.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
A Towering Dawn: A Final Fantasy XIV Piano Collection
Wailers And Waterwheels (Gridania Town Theme - Day) (Arr. by Matt Fuss)
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 0xa5aa82d3ef22d1a1c7825e05314109af1b17f247ca71b6176b3906067d95ac8f. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T01:09:53Z), 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/USE830926504.
Twilight Over Thanalan (Ul'dah Starting Theme) (Arr. by Matt Fuss)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69008298d0e75d0cb2d2e2bfee2db36db4516ca72f0048db2c8a472e70e87cb4. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/USE830926506.
On Windy Meadows (Limsa Lominsa Starting Theme) (Arr. by Matt Fuss)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x187df58acc2feb6c9ba8bb28daa5b3fddc05d8274cf219539801762f1b16e7e2. 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/USE830926507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2e40acb37a71af42b5700095a670316e4214d793a9dc5b101af7483480b0150. 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/USE830926508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdaa3862b4c1b008cba1a519ea8ffcf7d270dda81fbc8fa216750a28c7076710. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/USE830926509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52cc9bb4a28bc72c6b77b7b913c57d1f874178a978ac39600c56525239a6ad82. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USE830926512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5405674d24642e52fc25f4b2f8fcf9c230f254c5a4463fe26ab7dbb17156b29. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USE830926513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x836c0b60f58c6f862a3b1beaade7297016e9ab058e806758e9a68dca06795bec. 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/USE830926514.
Canticle (Louisoix's Theme) (Arr. by Matt Fuss)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e2ebcee5e2f948cc7f5dabf3a2142a0d074a65fe00ee78ce3ca0d96dbe7599a. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USE830926515.
Steel Reason (Theme From Castrum Meridianum) (Arr. by Matt Fuss)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b99d31ec9d4a516d29bbc838eb8e119974e0d0f04375662bda240f5f4287bbb. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/USE830926521.
Torn From The Heavens (Arr. by Matt Fuss)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d748eb1c0388cc99dc0e632c357dbbfc4db15f9de13b0eafb57614f6adfebe0. 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/USE830926522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37e558689376960e04a2755b8a627eea3c8f78ea190da65c8f10149bf91bca42. 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/USE830926523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbd180e3f44af90e9a1a1cb0bad45dc3a353e2b9295cc167094ec35520666f70. 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/USE830926524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7db22fa7676c8a3752552cdfea2441b478ebe1add931ecbaf2d940532d2ea36c. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/USE830926525.
The Sands' Secrets (Raubahn's Theme) (Arr. by Matt Fuss)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcde1a08bfecb113af76cf5bedb0b3476a915a2bdd82eb8b68de442051a7bd51d. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/USE830926527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ee7d3e12b1bd3ddc577665c870dfbd1e4b1c85b8b8a2c5db5e109e05260c3ad. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T05:56:21Z), 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/USE830926531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fdbca6f540ab0e7b9cede6c697dc1f1237f13fc53db587e58a560c1b4da23c5. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/USE830926532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34f5a4765929fa9cada421dbfa9a6687c112bfd3974a510f2bbca3cf41ba9884. 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/USE830926533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdca2af934ac8929716cc4d6bcda770893ca7a091c77cd1e87a783657fc1884b4. 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/USE830926538.
Fragments Of Forever (Arr. by Matt Fuss)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55219220e83151e9933a504bbc1356c5d494e07081f3d837deefd93e21f5f3aa. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/USE830926539.
Dragonsong (Main Theme of Final Fantasy XIV: Heavensward) (Piano Cover)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28e25c621479f9014ae19c32c79a1bf6123397fcc5f614b58935e4a2644051a8. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/USE830984946.
The Wolven Storm (Piano From The Witcher III: Wild Hunt)
Ard Skellig Settlements Exploration (Arr. by Matt Fuss)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ce1d2fd083798170288b77b94c25177438414d9975d0026a98bdd446a6b568c. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/USE831504448.
Kaer Morhen (After The Storm) (Arr. by Matt Fuss)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1aae136d35668c30312b76ada9022903fec8d4c71f520de2e285155ea5e957d. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USE831504451.