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 0x66ee8af2d6a713119417175b3c88ab0270c0e1cde703f5117b926326618b64fb. Chain 2 (Bitcoin): anchored in block 953922 (2026-06-16T09:36:34Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1b653f8b-4656-4ee3-804c-e0b9a5faa450.json and https://artists.proofprofile.net/proofs/artist/1b653f8b-4656-4ee3-804c-e0b9a5faa450.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Brian: Symphony No. 1 "The Gothic Symphony"
Symphony No. 1 in D Minor "The Gothic": I. Allegro assai
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 0x873f3f273e8c863ab2748b21c82ecc4517561b59749ab150b2deae2900de8ad3. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAJY1197101 — a six-check JSON result.
Symphony No. 1 in D Minor "The Gothic": II. Lento espressivo e solenne
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23f117b70178d607df28b2962902e83b02c7ae16d2dabcf51f5c9369cb57d2e9. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAJY1197102 — a six-check JSON result.
Symphony No. 1 in D Minor "The Gothic": VI. Te ergo, quaesumus. Moderato e molto sostenuto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cf96343f9ad0eda2e573f7ad84ec3d74d0665bb0c272e7ee6313152784e97fa. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAJY1197202 — a six-check JSON result.
Symphony No. 1 in D Minor "The Gothic": III. Vivace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x454d54e37a3a7c9b6f912f8338ca621647cffe3f9fd8f26f73030ad8043be365. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAJY1197103 — a six-check JSON result.
Symphony No. 1 in D Minor "The Gothic": IV. Te Deum laudamus. Allegro moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a56c946f734e0268697f78f6feb0bff3dc82a44ad2ad06258e71be1cd0bba65. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAJY1197104 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea428f4259dbd714afec5f1461688145b2769198148b348262047b4c66e98624. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBDGQ1223001 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb665f7e16552a9b7713bebaf2ed983b9f9804f62065b4a3db1ba2b054a76f655. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBDGQ1223006 — a six-check JSON result.
Symphony No. 3 in D Minor, Pt. I: I. Kräftig. Entschieden
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47f2155aecd63996feab738250167f52198fa24a495c8f80c989e69958ad8020. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBDGQ1223011 — a six-check JSON result.
Symphony No. 5 in C-Sharp Minor: I. Trauermarsch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c1360c320f5c70627d6abddaf45c5b113a2c39309e952778e8d491ba5ae5e31. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBDGQ1223021 — a six-check JSON result.
Symphony No. 6: I. Allegro energico, ma non troppo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c76eae5b43ca312d497cdd2e2f0ab1ba39f11b137621328574e792b2f0c37d6. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBDGQ1223026 — a six-check JSON result.
Symphony No. 1: II. Kraftig bewegt, doch nicht zu schnell
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03136b81d4ca16de54057f95a1750cd041514e90577c087d019aacc21227e150. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBDGQ1223002 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87ecb9de36ccf593298aadff9a936e7b7ad5b665dbea64abd6d572c4303b4d6e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBDGQ1223007 — a six-check JSON result.
Symphony No. 5 in C-Sharp Minor: II. Stürmisch bewegt, mit größter Vehemenz
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6be723934c8875b4cfb8fe691f3426dc86373bc9edcfe6f07c70dde528968712. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBDGQ1223022 — a six-check JSON result.
Symphony No. 1: III. Feierlich und gemessen, ohne zu schleppen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x284017ea3b989a33e103f423f2386cff49ddd8c534aa9744f2e1cfbb7d579cf5. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBDGQ1223003 — a six-check JSON result.
Symphony No. 2: III. In Ruhig Fliessender Bewegung
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc30df5c93b9a5a78115694e9d0fa2137a8022348f60c935dbfaf046781a91cc2. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBDGQ1223008 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3476dc20bd62d094932d0291753eb7e7e0005abc9fec794021c499138c8a059. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBDGQ1223004 — a six-check JSON result.
Symphony No. 2: IV. Urlicht. Sehr feierlich, aber schlicht
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41276ae29b41307490e5a1a2274eb905b61b283651a50d74d502303ff6fb68f2. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBDGQ1223009 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d03801562ec1c23e0c0bb9ed4a6ec2dcfbefb090466d3a2dcd01a8950307139. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBDGQ1223005 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94c3c43287d020417fe201f667a670c83d1367981eca4f9d639a24318be4db88. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBDGQ1223010 — a six-check JSON result.
Symphony No. 3 in D Minor, Pt. II: VI. Langsam. Ruhevoll. Empfunden
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f9fbcf0b6d94db82eecca44a0e64b2a36466aad4b7fb349cac6f109eda6c938. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBDGQ1223016 — a six-check JSON result.
Symphony No. 5 in C-Sharp Minor: V. Rondo. Finale
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6121041e7b48cf434fc3f0ffc93d3b70389d41f26a79f378a553722d05c36454. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBDGQ1223025 — a six-check JSON result.
Berlioz Odyssey: The Complete Colin Davis Recordings
Symphonie fantastique, Op. 14, H. 48: III. Scène aux champs
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x536501214031f397cdbdac5d630a758939c8e4050f066ecb9cc6b6a508d1d05b. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBDGQ1800703 — a six-check JSON result.
Chris Williams: Songs of the Coromandel Coast, Malabar & Tsunami Requiem (Live)