Shriekback are an English rock band formed in 1981 in Kentish Town by Barry Andrews, formerly of XTC and the League of Gentlemen (keyboards/synthesizers/vocals), and Dave Allen, formerly of Gang of Fo
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 0xebcc7e5ffc821e034f33a9eadd24a1424c9cb93f0878a3af46e502326178522f. 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/b161382e-f9db-4d64-a24c-fdd4d7ecd551.json and https://artists.proofprofile.net/proofs/artist/b161382e-f9db-4d64-a24c-fdd4d7ecd551.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 0x0483a174df4034ef9cd2fe108552568e47527507967b955846c3a2909ecae638. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/USWWW0201302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b37f6ed0fc2c425fd42fd44afa359559b474a2621303604fc692392d3764557. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/GBARL1001165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23df2d3c02fef663e3b7eebd79f8505d5cf9bd83f162a577e22d23b46f5e2afa. 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/GBARK0400109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe361fa870db7bde4838131cb2abec0268028886d2475b4e2eb4602f823d32906. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/GBARK0400112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39f42cd4dac521f5aab2e9f3824de64b1428315b40379717c57b53b869053077. 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/GBARK0400113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91ccf2c10e7c4586d3bde0833b76934256adeb51589df814627771d088cb15a9. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/GBARK0400110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9fe5646e6f83bee0ef341aa8e3dd00746710a446495d54a9df2fda26590d022. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GBARK0500020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2b76712d614940c358ae24e9074dc71a32cc31d7e15918de83d4efa45e44084. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/USIR20300340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18bd41ea98af96183dbd97198016fed403d1583f2b617be6ba63adb567482ad0. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/GBKPL1811513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd212098c5b71e3aa5cd7e5eb5989e81281a789b0262793fc59e5633e40313d10. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZK6F2553927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54858c6f4a35e72d84b79a1b001d3a50680dad5f43cea109c330c3a159a993f4. 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/QZK6F2553928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4362acf94990eb9474b57f0b4102ed334da9db1fd08998209f472fe3a6804e48. 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/QZK6F2553929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4a1f219a43856755f22f21f0e0d2c6f0d344efaceef282a923f29bb42b61270. Chain 2 (Bitcoin): anchored in block 958369 (2026-07-17T05:20:29Z), 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/QZK6F2553930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1551c359b49330c6ac33e9d73de6160f841a0511bed7fb403da2e786b5b84cd. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZK6F2553932.