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 0x3a800887c293234e2c840658c200ec14fee95c8548cf6fff755c989db05ac4ce. 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/86fe31e5-2afa-4c48-b385-47bedd0f66f7.json and https://artists.proofprofile.net/proofs/artist/86fe31e5-2afa-4c48-b385-47bedd0f66f7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Fastfall (Dustforce Original Game Soundtrack)
Fastfall - Dustforce (Original Game Soundtrack)
Fastfall - Dustforce Original Soundtrack
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 0xf5977d679f7e14eb79ec6b5dc3900fcd5e029e8d6a389023850ddeb535c93b2a. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/TCABE1209084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbde4f0f3ca513ed4cfef85319284dc42515e9f46cca7d1a0715c6bc90698246a. 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/TCABE1209092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c8189ad5a4a882eb78b7c3761fdfe7dc6428ba39f65f3f80bf0aea62ccb2de6. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/TCABU1440902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfedec30a3309f7d09b6c5dbe44525103bd9a28b0347b951c566ce1e96b86ee99. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCABU1440906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a902710bbaed36519c345ca8bbbb17aa87288d127ecc8d24cf2600b9cc05951. 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/TCABU1440917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b997dd7495f7ab253670d97179a5cc93838a21ad5be22dbc651f66f365120de. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/TCABU1440921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7e0c564b45065d9c0e3ebcb5b664f402e835c26074c6a6c8e492dc9d853039b. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/TCABU1440928.
Warm Cobblestone (Run, Don't Walk Variation)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70090539f30f1c3d92184226e437ac04db49f64ae9dc4cc545be9ba56dc5056c. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/TCABU1440931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x575fc22606f7bc77b12e31fb2e327a837f0018531980fb77f479e89e6121324c. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/TCABU1440937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe473c2c9ba96f291633b9a8efa238ec047ed27cf5b605275d60e6f07d8468fe5. 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/TCABU1440942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdeff7b1a65f68b8e29364719fc523daaf0b897d1f155629f5d30e3972b3adab. Chain 2 (Bitcoin): anchored in block 957663 (2026-07-12T05:58:46Z), 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/QM4DW1673099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x609154e9598b7a728ab9364333c93b648a7ed897b5d234c61e8956c8f58e3f89. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QM4DW1673100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccd65a806e18ba36248ee6f0405f74abaf21b21577f932111253bd3d80ed99a4. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/QZTAZ2382229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfef9e5ed1958b957d81c2f535496016c02436214ea4219633c7022deb474830b. 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/QZTAZ2382230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa30e1a47ca42dc24fb0724a3a2dc7b9b80c23737f78aad1eb3d790c85879b46a. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/QZTAZ2382231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d1aa9a0e61fee21e46acb5a20b5d11fa1a8083be5d17d8fd83d2a872166281f. Chain 2 (Bitcoin): anchored in block 958681 (2026-07-19T06:14:54Z), 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/QZTAZ2382233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d1c1b2ad1eb4a4818971b2ea1a3eb60ae1b5bda8e0f42b34a6dc73c6b604ef8. Chain 2 (Bitcoin): anchored in block 959011 (2026-07-21T13:26:15Z), 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/QZTAZ2382236.