alt=The Australian String Quartet|thumb|The Australian String Quartet. L to R: Dale Barltrop, Francesca Hiew, Christopher Cartlidge & Michael Dahlenburg The Australian String Quartet (ASQ) is a chambe
{"copyright_id":"0x7bad63fafbd95fd08c1ec868c5e009c0a608c4b7d78e4ed8cf706d4ab4de58a8","name":"Australian String Quartet","registered_at":"2026-06-15T03:06:06Z","symbol":"NIM0662451","token_address":"0x9abdfdc75034f0310418307b674e9f2bb4e4fed6","type":"artist","uuid":"d705da3f-6f35-4021-ad5b-ddbb6eea7277"}
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 0x7bad63fafbd95fd08c1ec868c5e009c0a608c4b7d78e4ed8cf706d4ab4de58a8. Chain 2 (Bitcoin): anchored in block 953786 (2026-06-15T12:56:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d705da3f-6f35-4021-ad5b-ddbb6eea7277.json and https://artists.proofprofile.net/proofs/artist/d705da3f-6f35-4021-ad5b-ddbb6eea7277.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
String Quartets: Beethoven – Haydn – Mozart
String Quartets: Beethoven - Haydn - Mozart
Ross Edwards: String Quartet No. 4, Ridley Gold
Paul Stanhope: String Quartet No. 1, Elegies and Dances
Paul Stanhope: String Quartet No. 3, From the Kimberley
David Paterson: String Quartet No. 1 (Live)
Matthew Hindson: String Quartet No. 3, Ngeringa
Noriko Tadano: Vertigo / Staircase to the Moon
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 0x3e01fc5ed99c078e67f7c5958d71a22476a8539c58dbc566b32842c9e231b406. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:02:10Z), 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/AUMEV2563297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6d9c35ccc2a25f06c76a31a39f4836767298ad6d432f7bfdd2afb0a6e3fc33e. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T04:53:55Z), 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/AUMEV2563298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dea767e569e29b72b7b8e71c670ad4ee222001612dd7d9b1d63c940036eafaf. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QMB622102401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x988632a40acc43c7ff3baa4edea59dcc9f9c60ddfa0cef88f42135d04bc75982. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QMB622102402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2376651b79c2111c3fd53e1afb91a03c7eeb7ac6f46356f72e307411ec70355d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QMB622102407.
Manhunt (Apple TV+ Original Series Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x374a788764c821615ccb0049f4b44d14e0a85525a90eceae29d1d00fff94185f. Chain 2 (Bitcoin): anchored in block 960153 (2026-07-29T21:57:12Z), 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/US23A1578578.
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 0x0edee781a23bb6573b0b79d1fc8fc10ab974ee2d7da39303f8a2b0b448c118ad. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/QMB622102403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8df1f317940c44b3436c997545616ab691e803e51d2d81187e1a56d151f971de. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/QMB622102404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x295e5d4f8c1afb57eba20db0abf8bffd5d71b0de3b19ce489cf758e83e201029. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/QMB622102405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x012589f18afb7803a7c23ec3f4b3a162ba6aa279dcec5cdeb37835c84f9e5b2f. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/QMB622102406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64e365bf5bc8e33fd7dfa59ac8570fe67fbc3188bcb6485e7193bcf0286666f7. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/QMB622102408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98ccd3771fb4dc9ead8c372651d823b0a443394190b67461edfd2e4eec3249c8. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/QMB622102409.