David Helfgott (born 19 May 1947) is an Australian concert pianist whose life inspired the Academy Award-winning film Shine, in which he was portrayed by actors Geoffrey Rush, Noah Taylor and Alex Ra
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 0x7166756cb9f7f54ac8259a454ed8a2c9cccba3efccdfdb737a9923c3ccc563f9. 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/bde48c4c-d006-448e-83b3-a101dc24cc06.json and https://artists.proofprofile.net/proofs/artist/bde48c4c-d006-448e-83b3-a101dc24cc06.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Shine - Original Motion Picture Soundtrack
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 0x3eb12bec003759e7554a38849610182eb73ace87a6da5bc0269c37a266d21e72. 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/NLA509615201.
Polonaise No. 6 in A flat, Op. 53 -"Heroic"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd5fd274a1f9617e5f9041061e3a8e579aa8293165b07dc4ea2f54d959d1dc9e. 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/NLA509615202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7805301a0eb96173ff8cea297981e206c11281b9f8913b2772593acfb719a84d. 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/NLA509615203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc81aff69718cc25d23aa64b5314b55cd6f98609110f92f664e323d3ec6523a0a. 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/NLA509615204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9c3e4685e0945c4c33630d09b3dd14d241233e71b590f13cac24d8b05c2bcd8. 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/NLA509615205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c10d5a71414fe4b1dc07532a71a975e9351b24e4f51290a77d11e1bade019ce. 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/NLA509615206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb306a423cc0ffcba4a8839b149289d1ff1f3612f36cc662585ee9993d768f652. 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/NLA509615207.
24 Préludes, Op. 28 - Arr. Hirschfelder: Prélude No. 15 in D flat, Op. 28, No. 15 - "Raindrop"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3696086b69f372bb60a7144c8b832a63411d54917d85f7b0e8a787b984fd29fa. 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/NLA509615208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd76b77777a8378c0f98bba3617c5b6f6158f39ba28177624669461c6fd572d59. 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/NLA509615209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26ca26fa82d5b8559c32b7726232e84658ae915542d5fe6b1b181cb91d7a5566. 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/NLA509615210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cd108b8500b3f42f01c533e570311906fd04f22a616aab36cb8d9626b2d9a3b. 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/NLA509615211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34d56ebba69b29b3f62cb5a9a6ed31cf3a290fa43a545a05de2642bb278f9296. 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/NLA509615212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cc417c5c3bd08ccb0362a3e32f24d6d790df44d48b05623b27cfb00ef0efd32. 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/NLA509615213.
La Campalesson - Arr. Edwards/Hirschfelder
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43f403fe05966228a52ca048e81261213efc843037b59ef9065ff4dacad85122. 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/NLA509615214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80f1456ff740a59ef87b7395bff9e37619a1c1e6eaf856d9edf7ccb63f12b51c. 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/NLA509615215.
Piano Concerto No. 3 in D minor, Op. 30: First Movement Cadenza
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x101d26830fea56208d773671a14da939c2ab96c042b87486e53331207a3d795d. 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/NLA509615216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc11900791a42948be1aa01cca8ca5f28f3c990389531a310e32a8813e995daa2. 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/NLA509615217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeb666e3e0a570bd7f30e13bce35d87dfe47e4704eea973504322d968cdd8d82. 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/NLA509615218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf7550c70cc3a3266a535fc63efa1249b2125fdbc81c741f731f6887b41904a1. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/NLA509615219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92a71c95bc3fc8b736c3e3ad0171720a542ae7322ea49f6a572d0b7ff55607bb. 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/NLA509615220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x869342a3a83f620e17fcc61725540fcd2f0ee81a03756c21d9e53803a750c1f6. 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/NLA509615221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b52114bef3154b2ff8416914e9ede7c947a99ae7e160a203e971929400d8337. 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/NLA509615222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64affb9055a6354e155602d8e7c4dfa94384c14c97c19ceed42988b94639cec0. 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/NLA509615223.
Hungarian Rhapsody No. 2 in C sharp minor, S.244
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ea886bbe7a18d2feb218e5ac344fae16a377a0cba3c83a3af7ef681a56f260d. 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/NLA509615224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0c97f35e8200c10c570fd8943b17b4c87d097607ce57ce07a4c28e152c72100. 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/NLA509615225.
The Tale of Tsar Saltan - Transcribed S. Rachmaninoff (1873-1943): The Flight of the Bumble-Bee
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd89378fcb14befea3f3448a4a49f79c3b071c1aad391f01ccd5a9ace189a7d6. 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/NLA509615226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08efdda69fb1caa3a288de1542bb2fd5881368dd540c8cc578d8a81cc5550365. 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/NLA509615227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3de4c3b04fc149081e239b16f0a22be1b212205bcc30c72404855d7320c409fa. 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/NLA509615228.
A Loud Bit Of Ludwig's 9th - Arr. Edwards/Hirschfelder
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x238a1b6a9801d14069702418e677f8cb9ef9e0a43d3b707d6c9e40223ab63c84. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/NLA509615229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9877bd5cd1389eea8d14b4755fb201b5c11b2b7099f2fcbc580a03d907ac6278. 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/NLA509615230.
What's The Matter, David/Appassionata - Arr. Edwards
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd585ae46467da7a3a8216d4e756a8bd264af5938a2f965cb5766cf55444bb55e. 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/NLA509615231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x256dc7305a40eb06da4f2163a55dc056bd7bd5d8705149c2bfeeb59933d03288. 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/NLA509615232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa49e57b8279181b235adcec17cfaceccb8d4ed13a48f5ea97b8feccb29d868b8. 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/NLA509615233.
Nulla in Mundo Pax Sincera - Arr. Edwards/Hirschfelder
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6b0dded92eb42d55f4c7ebbdd7bd50f433e552e1c5e250fcc1dff4a7954f4fb. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NLA509615234.
'Tristesse' - Solo Piano Works by Chopin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd5fd274a1f9617e5f9041061e3a8e579aa8293165b07dc4ea2f54d959d1dc9e. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/NLA509615202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3696086b69f372bb60a7144c8b832a63411d54917d85f7b0e8a787b984fd29fa. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/NLA509615208.
"An Evening of Classical" - Chopin & More
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3696086b69f372bb60a7144c8b832a63411d54917d85f7b0e8a787b984fd29fa. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/NLA509615208.