thumb|right|260px|Aarhus (Denmark 2022) Photo Hreinn Gudlaugsson Nikki Anne Iles (née Burnham; born 16 May 1963) is a British jazz composer, pianist and educator. Early life Iles was born in Dunst
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 0x959c3bc3bbb614fd531a722f9a84c257eabf7da9e990b253ca40d07e5a79d638. 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/c549725e-5378-4d05-9246-3b57030a9810.json and https://artists.proofprofile.net/proofs/artist/c549725e-5378-4d05-9246-3b57030a9810.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 0x7572205e66232d549ca5050bb4a137fd5aff75e8a0ed699e650d832c8e2f2d02. 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/GBVEV2301531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a442156755cf67b3cb9784b7f0ec76b65868a51cab62a8d9da771f1c05021de. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/GBVEV2301532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1c297e78c0e15ab744950a42a7c7acc6104cbdd9804e525b6d1d11d1f4b3008. 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/GBVEV2301533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x974e6a1d21e358cc9a8434b375ab3ccae83a56a9b4a1c0a19cc9dce742c0e4a1. Chain 2 (Bitcoin): anchored in block 960170 (2026-07-29T23:52:38Z), 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/GBVEV2301534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06aafdf5e096ffe1e2f74ae5844eeb8d359b8c707499b6f6f4eaa72a7408d360. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/GBVEV2301535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4034025fcb6037b0d50efbbc68cae07cdee6f64176b8cf6a97395294b590c0ec. 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/GBVEV2301536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad5885546aa4ae6fcf54b42bd1db0cdf4294428596e9fd7fe2f7c98b48930069. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/GBVEV2301537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecd3ec0c0bb21e0ebcbf9192a3a0bcfee601bdb08cb8c947a8670e6b0af5a966. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/GBVEV2301538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f3bc6be8789a9b9f94a535e5892f08909cae47e71e7ff9ea512b860eb08be54. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/GBN3Q1403053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb81ebd3c7009efc742f6460918e4e2d515e96c9f31a3d8333f40dc394426bba7. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBN3Q1403054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfbbd3fa2208dced9cad6b79a4f134f25d0eb2c3169b31953194c92a4f73ab5c. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/GBN3Q1403055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8640f1c262aece412b808635f86088133ec61064c2c5e12d8e953e68d374762. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/GBN3Q1403056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x075ca758f270bc6e3927f2a662eb6e46c41f3b29e6bb675460669d76d1bfd6f5. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/GBN3Q1403058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x472f6350061357ba2438c67f20516b10113dadbdd5846847d740213bc0b25e83. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/GBN3Q1403059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb198365d2eaad3b9a04c3c7e0fb6cea00e7738c07e863165cbdfa7aed8364864. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/GBN3Q1403060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb51a5a749a10b138549d08bae7c781b353ec2bf670361092c559207d3f9f0bfa. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/GBN3Q1403061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x762e5d3c7d2c96c3039491bf600a1af6da062a4f9849c1a203afbe5f0355ef54. 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/GBN3Q1200273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a9621a6d9b4b8d7770b4ec6a4c7ae963bbca22d74029c99e4259df99592e57d. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/GBFUN1138203.
You Must Believe In Spring/ Spring Is Here - Michel Legrand/Rogers and Hart
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2ba99726046621c6f9fd465e605140add16dab234996e099afe1a6727ba41f1. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/GBFUN1138205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x146136aef352a379ba2f017cf230ef88752d18355ec33e77fbd039290be1f407. 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/GBFUN1138206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e93c622edbc121bb1cfa02445e461178228449023f205912e976a6f77a9721d. 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/GBFUN1138208.
Piano Exam Pieces 2025 & 2026, ABRSM Grade 7
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b67848cd3d64cee2577d6d71bfb142c8136e9a1418d56b14f6c0f75fdf4b60a. 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/GBEYQ2457641.
Piano Exam Pieces 2025 & 2026, ABRSM Grade 5
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1dfd9cca945376d0eb4063f1e54b870e226abbb97f2671705f7c36162a0c2d7. 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/GBEYQ2455217.
C:2 Jackson Street Blues (from Jazz, Rags & Blues, Book 4)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa976c2988d8e19526b79e23d6336c3b81a003f6b3b9a61c1304347c6c63bba26. 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/GBEYQ2455234.
B:2 Foggy Blues (from Naoko Ikeda: The Graded Collection)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a0dfeca9e0b3a2f507f12c91e28f93bce3ee6097b76ff6597bc6275a8499c97. 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/GBEYQ2455218.
A:3 Hook's Hornpipe (from Piano Tales for Peter Pan)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bbb714f120891a1031b7b4b6879e070447d6c209cef71893c9cc1a7ce65d451. 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/GBEYQ2455203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd3a631ab2e7dfd6727c5f82ef968f98014a2168d7550bea4b0ad2fc7dc33838. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/GBEYQ2455236.
Piano Exam Pieces 2025 & 2026, ABRSM Grade 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a76fcc14b814a2b75c5afb894bd148d0c284a8cb6a2c3d18ffdf3a8e54e6de1. 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/GBEYQ2453817.
C:10 Smoke Gets in Your Eyes (from Roberta)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac695e7fdefe82ad6eef1c13cf1be0805c63e08011cdd2212c060382fd41d9fa. 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/GBEYQ2457642.
C:16 Groovin' Grasshopper (from Adventures and Accolades)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d5a1125ce1abb25b198debc47c27fd47d90cf96495bbd2edfd3929abacfa064. Chain 2 (Bitcoin): anchored in block 957025 (2026-07-07T10:59:31Z), 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/GBEYQ2453848.
C:12 Pop Bossa (No. 5 from Latin Preludes 2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x804adf3ff73a0dc7bc255208c1f993b0e2a03fad929e3220e11627715c76e59d. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/GBEYQ2457644.
C:8 The Waltz of the Elephants (from Clever Cat Goes on Safari)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81ed295f9b2f2c631b52ebb6960f045eb4fa615622fd8773fec18e4de46df579. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/GBEYQ2453840.
Over the Rainbow, Extract - Arr. for Piano
Piano Exam Pieces 2015 & 2016, ABRSM Grade 6
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x386629259fb0e5227bdb14a9117284d3b6e20922a82a4f160c898a64161de13e. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/GBEYQ1470513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce26940f01d988ee230246ce139717e54d74b12fa7d6cf72936633a719e44f4a. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/GBEYQ2453846.