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 0x31fc08341fc2a685af224f34963bb5984e1f0a0190611091680127699f76ac73. Chain 2 (Bitcoin): anchored in block 953717 (2026-06-15T01:05:33Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/87ecceee-e930-4c9b-8efb-338e2b4b2e52.json and https://artists.proofprofile.net/proofs/artist/87ecceee-e930-4c9b-8efb-338e2b4b2e52.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Train to the End of the World Original Soundtrack
Train to the End of the World -main theme-
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 0x98f7ae5867a767119d95b78cdd443d28e3b8fba5a8655ff366fcbb3096731432. 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/JPVI02401723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f94849279df1f8eb638abbdeec44d2c1656e2c9bd77cdd6ced665361a45c76a. 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/JPVI02401724.
Train to the End of the World -darkness-
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8983b56a1293ce72807482c25e4551b22dc4b83ccfeb9585eea683c813c6c081. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/JPVI02401732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5107fcb818ad7b987a02489d7050cf23876f6413ef9f17ff4b5fbe929bea2b99. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/JPVI02401736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a7556cabf944e06374dcf47573ad85fe4d44d237fc5e22c564c0db97dad5eb6. 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/JPVI02401737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3912ce25db2f13ca6f48a7a649bb8336aa91045fed970aa2c6fdb1bb10f1889d. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/JPVI02401753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd99726d435ad448547b24748b384eb89b90eed4d97d677f5da6471f95c2b6e2. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TCJPJ1975077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd380dac131f4491fe17e8ea8a7553991827070bde83575c481b5b37851e7c9cd. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TCJPJ1975078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94db12c60dc6b14fcc32f4cface60865293d20b7c2bfe6b0cf4e51bc08d0e69e. 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/TCJPJ1975080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45a88e5cdb0ae3d567993ec0f54dedd91019203c7fe515b5b41cb6acb4474cfe. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/TCJPJ1975081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7922c240127ae4c1f87b81f2f9ac15b27af9a2f281766b3016f23c18a43a2fdf. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/TCJPJ1975083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17e105bbafcd467db1ee4873297d213a7323dc8b8eae8d13bff1a7e9b98a6a03. 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/TCJPJ1975093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2a65932cdaa7d75b0c98017e3b5da18b7c82ed5d31200c4b4193cb77dcef489. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCJPJ1975096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe06452fe421e0c2292b8ae386e9162c16b7309de0fb427a26e66da37772ac73c. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/TCJPJ1975098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa61814ec3a55e4afa6e8f155723649c236dd89205e440d8d6075f493cfaf8c8d. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/TCJPJ1975099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd13d017bb9c7aa5b1fd1314ac97b94ee62db712841d6c1042584bb003ed1b43b. 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/TCJPJ1975100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0311e8d102b0ed071cd77fc72d34b83e6a4464d976f11c035c8cd9616831aedf. 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/TCJPJ1975101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2ded0552d0cac317b4f2fe8690ac4776751d3cfb62229a7b5f1ad182eb527d4. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TCJPJ1975105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77bf7905385be5fd530018a87aed5394f94564929a3b229a266183c3b9720d31. 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/TCJPN2018124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12afd77d81e70bb1f08a2c38dcdd88ff10b87a3baf1a1e4d76f2a43875f619f5. 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/TCJPN2018113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d15075af0ba3f9fe763990b13f5b90a832b757065a2e63b4f4ddcc43d8623ae. Chain 2 (Bitcoin): anchored in block 960355 (2026-07-31T05:49:18Z), 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/USLZJ2357584.