The March Violets are an English post-punk/gothic rock band formed in 1981 in Leeds, incorporating male and female singers, drum machine rhythms and echo-laden electric guitar, much in the style of fe
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 0xb492ac355bb643d1a544587d694846cd9143912971b08aed01df83cdc5d5e8ee. 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/5d0abf27-37e4-445d-80b0-9cea4072459d.json and https://artists.proofprofile.net/proofs/artist/5d0abf27-37e4-445d-80b0-9cea4072459d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Play Louder Play Purpler (Extended Versions)
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 0xbc524112fa2c0ff73ff9f5dfb11d7500b8c1824bda7859e0b39756f80f9d8970. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/GBCST8424201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd37b78a7baaf5e16910334ff3f843fb52b2753bc8c4ddc5aa7c155ae494a6eb6. 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/GBCST8324204.
Play Loud Play Purple (Complete Singles 1982-85 & More)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdce216b76e0217a264002622bc5bd2ae9fa3f392257ad9b666362f0a53de169c. 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/GBCST8424215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06586443650deae070fda2b5c405a28e2f691d25016cc3c8d53adc3774a14e79. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/GBCST8424212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ad1bd0bf0f2e285d5472ba774f2c4bc9e9251ff4286f642bc39dca17e061804. Chain 2 (Bitcoin): anchored in block 957650 (2026-07-12T04:18:57Z), 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/GBCST8324207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc524112fa2c0ff73ff9f5dfb11d7500b8c1824bda7859e0b39756f80f9d8970. 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/GBCST8424201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x371596ad6cd151a86055b63009e4d9c01b7fdfbb763e93c4dadaf89e7b7494e2. 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/GBCST8424204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed8fa984219e12860b756ad89ddcf024cbb85f79c2ac57fe42bf9e7412aaf6c7. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/GBCST8424206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe53c6e6a39b5cff0ada34c1ab7b776199e58c20c721647c26278a6838bacd974. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/GBCST8424207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb2eb16cb79c1052f8ef9246983205f7537b0cbf8381453f3507288ca2f14021. 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/GBCST8424208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde4abf0813a58f305bb67b1e4cca3b37ee180b4db539c35293879177450730f4. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/GBCST8424209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3e49375336191562cc682e239cb3636c2140cc52e561b171686b44b23d2fc14. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/GBCST8424213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdce216b76e0217a264002622bc5bd2ae9fa3f392257ad9b666362f0a53de169c. 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/GBCST8424215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x151702f1ce3ef8644dca1101a1012e1e5a579fe72bc10dcf8783768e37629a36. 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/GBCST8424216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed8e6a7e3b82fabcf460a75cc07931a56db43857812e698f4d11f95f54ee2291. 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/GBCST2354001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x993cad6989c0cf73ac0ff4f42064ef4bfa944e5edb4b6fbf11a7be2b62599e8a. 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/GBCST2253833.
Big Soul Kiss (BBC Recordings 1982-1986)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5322bbee4e34d3f9b3fcedb23589fd469f9189fceaffe14f3a145954664ad16c. 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/US57M2436301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5cef1a196fe61c2040dd2c04c090adc61d093e3c8daf53d65d22eac705639d6. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/GBCST8324206.
Gothika: A Gothic And Industrial Mix For Your Lost Soul
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefcad47158234ba21dc4f4387243d4d46429951645e975c13b49378cf53c1bcd. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/USA370633038.