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 0x30b066fb8eddc173bc11866a8a858926b2442faa4802d5db0705948b114af1b1. 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/1cd5bc42-3147-4476-ab7d-87f7dd3e4949.json and https://artists.proofprofile.net/proofs/artist/1cd5bc42-3147-4476-ab7d-87f7dd3e4949.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 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 0x862157df1f996e1355652ffdc5145c73d96888a97237d590fd2caf740ee82bf6. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/QZNWZ2004396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ac30f6b2432dcd63bcfe2b7d3a871e92cb006cdd7e938ac3787b6c195db7c0a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USCGH2068368.
Great Fairy Fountain (From Ocarina of Time)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2e32e35d7a5ff2c18a5356228a41d6e0c39afe2c1eeff76c2fcbcfe4717f4e9. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USL4Q2013692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8e1db9905fd17332dde30f17f3a25274117f5b44c9b40dd99d352b0301de439. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USHM22039171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe60daa938a29754dadbab699f1afd8a1b10f81818bc9ecad42da05eb9f010f6e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USY282007749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75d6412d858b985e6ae7ed4b8d389458ecafc6c718d473ba48431b1ff6834625. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USY282007750.
Light Spirit's Message (From Twilight Princess)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41d6d8c543bdfcc9c2bc8729512dcdbdd815f0e5cc461037b0c2ec371eb00509. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USY282007751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c4a129f63996be3de38eb154e5f89bef2acbb187cd46710398a7bc4e32befcf. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USHM92097051.
Southern Face Shrine (From Link's Awakening)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8a4d222da6d1d4d36515c520346df1a5f489ec3b82339254539ac9911a260f2. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USY282007752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1ea85d599aacffe74d3542b39bb5ebe3cf0eb7da83145cadb59e11143865f47. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USCGJ2016885.
Ballad of the Windfish (From Link's Awakening)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0995a0940afe9a648230d9fed8d7b4453d75bb84780d67792f73b152d6636467. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USY282007753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0543d5be6f0418ee2f4bede24a85ccc885b22cb898fe621f640499709fc3ed05. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USY282007754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44ea125524a6cb6824c6e7334f17343160fcd5bde74ec2ed1d8c62b418b100b6. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USY282007755.
Full Steam Ahead (Orchestral Version) [From Spirit Tracks]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf8fb24b4692a6fb1d6809f83ab6bbfdef4c0b514978b7f501efbaff8f8b8f0a. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/USL4Q2280566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5a20c294761bb0139eb8e05d142b03aa8e28d9d374963a3b4b1f401ba841d7c. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T07:48:27Z), 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/USCGJ2308045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2783d314bd6aff152b62539451e0bb426c9bbc75761b2a87c62a35305983e576. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USCGJ2308052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e93630a75bb1e56f19b544b9885ee7dfe03a2a6de9ffc229e9de4182fece9c9. 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/USCGJ2308053.
Requiem of Spirit (From "Ocarina of Time")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4989e2cc7b0af3984b74304fda434a7d66573fa3eead0455a2024bdce3053248. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/USL4R2310905.
A Lost Woods Christmas (From "Ocarina of Time")
Serenade of Water (From Ocarina of Time)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4181e3906b796a8244c5f8ea3704fd88537e2720ee9418d1e25938757488058. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USCGJ2450692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa418740f99adc9b358ca04f5511d932eae43517179d4f00fd23215d1a15c8a0. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T19:27:18Z), 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/USCGJ2450693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ad9909f52ba4767782dbf93edcaddd2172dd070adc322aad578a56e31d3fd3c. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/USCGJ2450696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7a7417e6017e4eaa7a4ea6beabf815ceda79c0c3a6237f8d6060d376efe6b8c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USCGJ2450697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f88d230aa63368130c1c571d235c14d13f3c636ae90b88022555b1df5159b07. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/USDY42486821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6b96112593f4229f73f03b9bd10193111882c7606acc579fc8816b415ae763a. 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/QZHN92541503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cba9c5c358ffcf0175f7cff39ec9af2d044f45aeba0e0f2d07a86d55093fa67. 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/QT4K32500285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0f4d5905d2535a03b879b1533e6de9024b28e6231572c233406a2506b7b831a. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/QT4K32519115.
On A Knife's Edge (From "Octopath Traveler") - Piano
A Traveler's Respite - Piano Tribute to the Octopath Series
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x002ef4bf9051fcec812de8e2b82f153b867800723efd431d8109e38f54eb82de. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/QZPJ32380167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64c33998a4f96923ef3cb5c078bc3bb8fa604b165e8e369ed88913bc0d292d1a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USL4Q2145317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cd9b73f155671d686bf432620e1ce51c60dd0e6be59b52244139ebd096fdf56. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USCGJ2221648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe7aab9fdd37c0d419b04b25f8ac0d2309e04f690ac72be52485c92ca46a3d8d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USL4Q2101266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a7bd76faca1d196c14cb9a1a68cef8bc01503b8e6371af569d60288d7cae501. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USCGJ2221649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd3059dfec73c46ab09e34e2a4ee67c33594c24326da0dfe4a8ca967c5a566fd. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USCGJ2221650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2623b6fcd7e6c4a274298347a8dcf3b08b0a6586f808f600c69553d432df614c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USCGJ2221651.