Whistle & Trick are an ARIA Award nominated Australian children's music group composed of childhood friends Esther Holt and Maddy Kelly, based in Melbourne, Australia. Biography Holt and Kelly's init
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 0x178da7e1b087c3446870a643edd803505f697cd79f715cd54b608b1f2dacf9d7. 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/c76fa559-99d3-4e21-8cf4-5bcdee6881b0.json and https://artists.proofprofile.net/proofs/artist/c76fa559-99d3-4e21-8cf4-5bcdee6881b0.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 0x449d9ccca71b63170fa34359d7e2993b1e3ff5251e69a45b64c32d4cf486e3db. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/AUAB02300053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02997c620706843120d6bb1ed92ac814f46d7a451b7f9c51418a7abd1e35799e. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/AUAB02300054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaef60869536f7d2b1b42a9db6138ae37cf82d9926582a3b9f43861a08a0a48af. 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/AUAB02300051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bedbc1016ad461d07c091e919ad3ba13b1331049f21134dae565d07bc14d743. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:40:18Z), 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/AUAB02300052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x449d9ccca71b63170fa34359d7e2993b1e3ff5251e69a45b64c32d4cf486e3db. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/AUAB02300053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50a5aefbecf2368f62f57ffb6c2c4a39825c9fc5508594783a5f214a75f1cc44. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/AUAB02300058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x244a4e7fc786f943aa313a5c6682e39b2cb599cc54265e30b6debfccb14fc1b2. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/AUAB02300059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04c0342ff51ec17c394f4ad8f9bd4283a7b2cdb88b68181e33a803ce92a5bba1. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/AUAB02400528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaec2982e1d9b264a996e163483e472cfaade5ec388b4f49b51613eebfcc5812. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:40:02Z), 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/AUAB02400314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4f7870291443c66425f6e65355c4cfa15c63d09ec1d01765dd962094631beef. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/AUAB02400552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cdbd60e51f7dc330c151dfbd1fe7883ced88416d79cb7f751187bd1ab33ac54. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:05:07Z), 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/AUAB02400554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x226d41e496d4d1ba52e95fc374508d7e10b2a430a2ffb6cb3afbd5d364819a7a. 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/AUAB02400555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ae9772108ffdd65aa3bbb2fa65f72700a3f4b4cc48166b6bd8246cb035f7246. 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/AUAB02400556.