Helen may refer to: People Helen of Troy, in Greek mythology, the most beautiful woman in the world Helen (actress) (born 1938), Indian actress Helen (given name), a given name (including a list
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 0x701abd8d72c545b19e38dcfebfa116240e9bb3a657cf81afc4e74b95c45468d3. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/73a5e9a4-6e81-4804-90c0-3850d5309cda.json and https://artists.proofprofile.net/proofs/artist/73a5e9a4-6e81-4804-90c0-3850d5309cda.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 0xc984c7e77c48d3868bd9c2183db81d4eb42309f9b79b17977a2cfa93a448166c. 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/USA370392158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x539a051e1aef42fef3f6c4a8bd17dba49058aa4ea4ea1af6908b7cdaa88648b0. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/USA370392315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab7b26484fb0eb05bacacd98b5db93750f3334b7b1170eef46abe609e3c3f125. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/USA370392316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb3201da53b1d2ad02d2f410fa211dd8eb96f841a9ea34eeabb1b31e22d600e0. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/USL4R2245162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06e09ae377f00d09dedc902e45202a8d895764b871790db50fb350fdd34e53ae. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/USL4R2245165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42d983e9413f394a9aedaa1c36bc6bb8ce479fd9bb5624d6f11b593c31f99c12. 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/USL4R2245166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeec09b295084439e7ffe3a32fbc2f2bc85be5ed52ca7d9c3be26df6547842f1. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/TCACE1557981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cc95b43815c31695e621c7d8b23b00fc3807d7cf582147a52af1a5f16acc27b. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/TCACE1557985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bc0884f5789e771ce42e404d13b1949b7583651810d0b247f81c3476dac96d8. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/TCADL1842775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9099c78a0e5e941b7113fd13eec179218b654c9914504f67441f5f44510f71c. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZWDW2427512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76bb66f48e8f0e891e3760eb25f64cd463422ba78c8b55cb8c25be93001d1649. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/QZWDW2544002.