Sarah Class is an English composer, singer and songwriter. Biography Sarah Class was born in Watford. Having written music and poetry from an early age and performing as a vocalist and pianist in ba
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba5e1881bc6969fec70aaf795f007af3b9520d5476d3a4f9171e6e6b54739c24. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4a4e2b82-e7a4-4958-bf8e-33e05426b416.json and https://artists.proofprofile.net/proofs/artist/4a4e2b82-e7a4-4958-bf8e-33e05426b416.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x261b08ad0b5461e3bc2387154e33a66e82cdd44e5b8c3255bbd578676b1809ad. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/GBAJC1300058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe18b44ab5073af148b643a57879a1f6bf9c7985897a2dcc8e0ffd81c103b1b42. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/GBAJC1300059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4f408aa8e8a04c70f71e749f45bb7a262c686f5b94af7238d994405f5678334. 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/GBAJC1300064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e03ba8b9069d0173b142994a97298ea2250570f694004979a0ec2c125f286a6. 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/GBAJC1300065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb429802328a0419a89126809c86f84ae88163fa8d35e26d51e229b32ec5b0807. 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/GBAJC1300067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8465ff7f5058a05aa4c746560dc1b3ed068024d44fb9d38abb884b1f0f44cb8. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/GBAJC1300068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x810b79995fc0c32791ee2141d6dea19cb46ff1aae37ed91508d72d1b1f8d520e. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:40:44Z), 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/GBAJC1300069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa50feef6770115e3e2006c59fbf9f148e8b0cc692ddb5d94120897b87fc45751. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBAJC1300076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9845f85877fa0185888df48971ea8a7fc84ad47b8a2d2bd1bba37d6f47a09061. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/GBAJC1300077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf5dc7e2e5118879e5e2a1d472a0c3d394f914e5ead857025ef0266e4d96d022. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GBAJC1300079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x521e0a9d86dabb58d224af439d1452328bf82dc52cc90174253f8b19ca1648db. 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/GBAJC1300082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbad6e9828dc7204f80a8fa8459a5bda2bb955a25ce79c9656ceb566045a83b14. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/GBDD72100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce194f0b992f22d61c23781365cbc7be2f82e7de4dafbd3433a79535bf67c253. 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/GBDD72100010.
The Saviour in the Shawl (We Still Sing)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa116414c0239df8fe3c6448866d424defae6d636af4aa6b8c3b23603541fd1cf. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T08:36:59Z), 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/GBDD72300001.
The Official Album of The Coronation: The Complete Recording
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9955c12871ce97cb2d8367951cdc338df3766a4c1d4aeb1f2a45c8ce406be1fd. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBUM72303872.
Pure (Includes Bonus Tracks and Exclusive Track)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2946b810e6e4fd9b9a601e3f991e8153af3cf13ebc93d29cc6bf0c547f4f1683. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBBBA0241307.