Entombed A.D. was a Swedish death metal band formed in 2014, composed of former members of Entombed after their breakup. They released their debut album, Back to the Front, the same year. The band's f
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 0x7609bda25312dd6c2b03a702c24c188769f898247c83eefd75951ab9aa5abb8d. Chain 2 (Bitcoin): anchored in block 953687 (2026-06-14T20:19:15Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/678d64ba-2f56-407d-be9f-ef42f7838685.json and https://artists.proofprofile.net/proofs/artist/678d64ba-2f56-407d-be9f-ef42f7838685.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 0x3c1af31a04d6192a43e8f9683fa5fd6321ca577efe0ab7165c2babb8d656fe30. 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/US4E41308104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5039418acf1d8f2d59472d489e57ed8e0a6e3303e08571172e1bd778b6585313. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/US4E41308105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc3098d843b357e83b0b7b4dcf380298f9cd8eb4229a1982a5786f7409362fae. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/US4E41632901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfc2b37d844c98b4fab78dbc7027177fc2542989444d3e8cd936b30b006b1cf0. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/US4E41632902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfea911c615fb96c75519284a6d5aad455606bd2f22451d0cf5e0f6afb86c385f. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/US4E41632906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05ec2412159c7c6f4cd356ea6b56ea8f96743ceb3151ba93cdaa8cbe005d4127. 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/GBDHC1801601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88a623b6a32244544bf6f4d98d0115d2e6c0902e847f314218fb0c7223c95c68. 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/GBDHC1901601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5f070d06164e06e8311783234be07037e1695ffe7317dac6c4b23fbefb3c994. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/GBDHC1901602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1d95084d62bd7958bf223fcd7ac94c1a92b143455ebe4629620c9ecd665ec4e. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/GBDHC1901603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05ec2412159c7c6f4cd356ea6b56ea8f96743ceb3151ba93cdaa8cbe005d4127. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/GBDHC1801601.
Live At Wacken 2016 - 27 Years Faster : Harder : Louder
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4920fed6bd42163d62022545d2c019a98a792357de5f93a03203bcd6a5abfbf3. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/UKKY81700019.