Robert or Bob Thompson may refer to: Entertainment Lil RT (Robert Thompson, born 2014), American rapper Bob Thompson (musician, born 1924) (1924–2013), American orchestra leader, pianist, arranger, c
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 0x4b7e3a2b96d3ed460bf8b9dcd36886b38368444069d3d36114fdfa4280326d57. 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/4ffb0191-df00-4041-84e7-6b29ff7eaeb4.json and https://artists.proofprofile.net/proofs/artist/4ffb0191-df00-4041-84e7-6b29ff7eaeb4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Piano Exam Pieces 2019 & 2020, ABRSM Grade 6
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 0x1f71738e1228cea7fa9fba9cfbcdcfc7fb5a99fa66ba4732e138305c8251d547. 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/GBEYQ1872801.
Piano Exam Pieces 2019 & 2020, ABRSM Grade 4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a1e7cad19c09581db54d46fb615961869db20e2c34141f8f1302831cc243c95. 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/GBEYQ1870402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a02a56add88e0ccc05d9224dc1d5de689f3f348eeb403edca9231a90eada67c. 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/GBEYQ1870407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x395824bfce5a0c5734648e03eb64052f8c3bc85ebc4a92b9661a7cad88eebcb2. 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/GBEYQ1870413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbe8d9f7a1f5455ff72d706118871f0920f87c72223d99b331d3bea40ebbcb09. 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/GBEYQ1870416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x763192b83d483cb21940d11590b1a748454566b13fc6893d2fb33d65660e215b. 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/GBEYQ1870417.
Piano Exam Pieces 2019 & 2020, ABRSM Grade 5
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b38e3f603b3814cd4ea74503c8f9475e2cbb27c373d1215e93e648a32ee10da. 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/GBEYQ1871108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe01714b134dbea8cd5cb35f35baaaddef9b29b1d20fb4f5ac079077fe09707a8. 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/GBEYQ1871115.
A:13 Allegro con spirito (1st movt from Sonatina in C, Op. 55 No. 3)
Piano Exam Pieces 2025 & 2026, ABRSM Grade 5
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe370cc1f2b6943e26f1ffb4ed03967f1198d7d7c70a59819df08a687b557bc74. 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/GBEYQ2455213.
A:6 Gavotte (No. 5 from Album des enfants, Op. 123)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62932a688c565711e8541050ee7389a9202f305ca5b3a1acf1753d3106f9c06c. 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/GBEYQ2455206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x799c5d72f056e55616b92764c6eb8138f504d719a2759c97e20b8c3a3813213d. 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/GBEYQ2455216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2210da3a1e4f3b69d25666014f35ada5d882b29466d6801c875ecccd5bcc14f8. 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/GBEYQ2455221.
A:8 Ringeltanz (Boys' Merry-go-round) (No. 2 from Children’s Christmas, Op. 36)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9adda4b98a108aa3c16b0f6164020c5e29758f39f6ff7d14567a29f41be35203. 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/GBEYQ2455208.
B:10 A Walk in the Park (No. 2 from Three Little Bites at the Big Apple)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e1752a0e39dd940a8f92aa577eb004a40c27d193b888dd0c3b0b93013341fe8. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/GBEYQ2455226.
B:16 Beauly Abbey (from Up-Grade! Piano Grades 4–5)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x491a40f3d9e121081a026b0caad8f9a0d7b167ba4a293cc6b3d796af42fb39b7. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/GBEYQ2455232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e11f06312bda26fc664a3fb53a41b317e67770f564187334e4c495ab6bc0834. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/GBEYQ2455238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x406adbd1cc76b6a97f678a4e1ff2152105c80d36b01448fefd6443f6c1c480a6. Chain 2 (Bitcoin): anchored in block 960183 (2026-07-30T01:10:20Z), 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/GBEYQ2455214.
B:9 Andante (3rd movt from Sonatina in B flat, Op. 70 No. 5)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c76464efcbe1741a399e54fa21b10a991da4c81ad3f452e27c5aae56922eb0f. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/GBEYQ2455225.
C:10 The Ghost Train (from All the Fun of the Fair)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44a2069275a6cb0f81870240edda8f82b12684a3a811bd721a4b1de82b48185a. 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/GBEYQ2455242.
C:16 Bright Orange (from Sketches in Colour, Set One)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b03a5bae0ae99ef5a31af31d75182118458302659122e62bc55bbe999b0c442. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/GBEYQ2455248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2f811e42d94ce1c93a51785f425b7eaf695dc226225e2d81d8ba5a9f68bf9bc. 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/GBEYQ2455249.
A:4 Allegro moderato (No. 3 from Fem smärre tonbilder, Op. 7)
Piano Exam Pieces 2025 & 2026, ABRSM Grade 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ba8e7c2696a623365219d732f7c273c43a84d8cd3d114bc45dc5f5a028b7ff2. 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/GBEYQ2453804.
A:5 Shadows (from Night Time Impressions)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x027983d05ef4d2c4d2f4b7143ad6fac5edc948e717cc6bcff0074df79524b3fa. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/GBEYQ2453805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92972e656a68a271aad4f34e3ba13c19e0ec8f8e695bba08e9379d7326339ac7. 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/GBEYQ2453806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacc7483cc483c6a676cf3603f3693f8016801da6252d367ddca302c56b740408. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/GBEYQ2453820.
A:7 Rigaudon (5th movt from Holberg Suite, Op. 40)
Piano Exam Pieces 2025 & 2026, ABRSM Grade 7
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x633e487d0aa8ecc432c18f7f1c08f105118540680fe0e7e65f05d3352942c5ea. 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/GBEYQ2457607.
A:8 Allemande and Courante (2nd and 3rd movts from Suite in D minor, HWV 437)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe11b936c00fc226d07f55e43b07dc3e18c7c6e5be9dc51533021acefb0c4b823. 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/GBEYQ2457608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa64d1a75a48a2221446d74a21e4a61577ebfc8e1521cbd9e76723b47227722f7. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), 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/GBEYQ2453807.