Nine Below Zero are an English rock band who have a cult following throughout Europe. They became popular during the period 1980–1982 and are still performing currently throughout the UK, Scandinavia
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 0xd882a34b644d7988473b70892187246ceaf33847855b709cbbeba55e388102cb. 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/b25df415-64aa-4847-956f-8f1b2cb39fea.json and https://artists.proofprofile.net/proofs/artist/b25df415-64aa-4847-956f-8f1b2cb39fea.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Live at Rockpalast (Live, 1981, Loreley)
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 0xdf55ad1935a9ab5e9c8b8d4506c2b78e7caf995d83454f8421bd6ecc992091d0. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/GBUM70802247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71d8a7ec9e2de24376809cc38c25bc58f72ee4e22f6e0652403c30ad5b41d29f. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/GBAHT1700250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4e374a5f7a68374adb8539eed0d7ac6b0692a92250775f443c0169a40299f56. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T11:47:29Z), 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/GBAHT1700232.
Live at Rockpalast (Live, 1996, Loreley)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5e2993ff1cc5288a9ab727f10ce4a17325e59c30e24a52166f48cd9a3636b3b. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/GBFDB0901559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9e52d8007c3c96b441cec2750a86f0d6a877c5856dfbde6c15d8b942fd56103. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/GBAAM8001056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12e71a349cbb81ebd7636d0784f6db1986609db9e87d0fff955ffe44162c89fb. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/GBAAM8001057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fd85d7872d01a93966e8123c869085e53c6dd7f8c1a0f052ff91b1605154a85. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/GBAAM8001058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35535c58b015442bf42c02923d6a14733ed3952a2d93005d4519f17e7c609268. 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/GBAAM8001059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb86b0605fb17c6ae65b20eff471b080d17d1a93b86be7ff61b826d47c75c527a. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T19:04:08Z), 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/GBAAM8001062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f03a267112a1018b4da22a4b6ad5b0595730a9038c0f3b1d25b481007d05ee3. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GBAAM8001063.
A to Z (The Very Best Of Nine Below Zero)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b300cbcc7f967c6cbd80943fb1cd90e9e09f51d5e9d6dab66a3d86896086dba. 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/GBUM70802244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x478cb3281b014b59f7527b7d372744d471680a8c89a5eb480118b7de7320f10c. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:48:15Z), 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/GBUM70802248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf55ad1935a9ab5e9c8b8d4506c2b78e7caf995d83454f8421bd6ecc992091d0. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/GBUM70802247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d8573265e053a5fddc64573e32712c825541f455be806690d155d490f780ad7. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/UKSK51900069.