Darkbuster is a punk rock band hailing from Boston, Massachusetts, known largely for their songs about the joys of heavy drinking, which have earned them a strong following in the American Northeast.
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 0x2e4855221754c799fc189a075e4bb4839b3b65f6bbc7b32eba5645d742149f42. 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/ea4ce3d3-04a5-40c2-80b8-6aeceae589d0.json and https://artists.proofprofile.net/proofs/artist/ea4ce3d3-04a5-40c2-80b8-6aeceae589d0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
22 Songs That You'll Never Want To Hear Again!
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 0x25f167899f3c89c8495190e4d6550a9099812aa5ae58e183650f225782f0285b. 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/USBW80510304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x088159462ad7f3fccefe9d6ccb81603409962e4dcec34c3357731152cbcaf045. 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/USBW80510305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a02895c47aebb0fab031a9bcee2e1fc69d2db9b787a6f0207d12bee44c43ced. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USBW80510306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdefc2b9e6d1df4d211862787506797b3f1876f316a86e81f4770bbb80bf7163a. 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/USBW80510313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x433382c1eddef09d7a4123298840d3cb186bd517357e5ddaccb2cfea290ce6b7. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/USBW80510316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25642320b0c1c7a9c1cee9832dbbff41ddd04c354b45dc3f2473d5de08d7b118. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/USBW80510318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5834f33e5fcb5053c11f739081186a84a10431ab2aaba5c7096000d18126425b. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/USBW80510328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90cfdbcbe50ae65e4f7a6d5952dc762189f8b8f2104b84a390df554073b2d4ca. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/USBW80510340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3fc3f4b63922d0abcdf3a470a6a02eb3f76e8fede9fadafdabba71186f2280c. Chain 2 (Bitcoin): anchored in block 957681 (2026-07-12T09:09:02Z), 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/USBW80510341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6252a49785808a24ec195c35af3ef80eeea207d1643fad1e2a6cd2292706e184. Chain 2 (Bitcoin): anchored in block 958666 (2026-07-19T05:00:30Z), 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/USBW80510343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b4e86d1787771825e58d242c7e81932482503f0fd5abd28da1e78a5196af41e. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/USYB31513101.