thumb|B'Rock Orchestra in 2018|300x300px B'Rock Orchestra is a Belgian period ensemble created in Ghent in 2005. It combines works by established baroque composers like Johann Sebastian Bach, Antonio
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 0x0ed84e3fb4c4ce3f3c4c5ef02f8a2436cdf7b78df7c06655c834b9e2ef230613. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2637877d-17aa-4b6d-8468-67b8a078508d.json and https://artists.proofprofile.net/proofs/artist/2637877d-17aa-4b6d-8468-67b8a078508d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Concerto Grosso in B Minor, Op. 6 No. 12, HWV 330: III. Aria. Larghetto e piano
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 0xa54c35a91a7783c2fbc6b7e91a88eca16b5bb4a0f8493f6845d40343c6f0c342. 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/NLE422001130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fb72a8a63a57f1e9ade445ecda1017d12304da28a10a4ec57e2a983f47b2301. 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/NLE422105533.
Music for the Royal Fireworks, HWV 351: IV. La Réjouissance
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8acdf439bf48f3d3e70008845179f2f15fae51968ee77e924a0a8ca1072b92b. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLE422301326.
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
Water Music, Suite No. 2 in D Major, HWV 349: II. [Alla Hornpipe]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8d116d38e364c073c606369a1b70075597cf4fe2c882aeb375cffced00a2d38. 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/NLE422301302.
Water Music, Suite No. 2 in D Major, HWV 349: III. [Menuet]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7af7cb1e4378cd830b33123e1d727bb8177f95d0756cb5238acb0f267dfa830d. 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/NLE422301303.
Water Music, Suite No. 2 in D Major, HWV 349: IV. [Rigaudon 1]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x521634e2ef519e7dffdeae4b5647698588bbebdd05708d468d595de710d4f728. 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/NLE422301304.
Water Music, Suite No. 2 in D Major, HWV 349: V. [Rigaudon 2] – IV. [Rigaudon 1] da capo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ac75a61f270663a03597b0a74aeb7e3e236180898271b7b9d8ef74d948cc9c9. 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/NLE422301305.
Water Music, Suite No. 1 in F Major, HWV 348: I. Overture. [Largo] – Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x022fcf9899df13c7baa24fdbc09d7b864f389b2f1c94ead1dd2eb3cac6cd20d8. 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/NLE422301306.
Water Music, Suite No. 1 in F Major, HWV 348: III. [Allegro]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x175eafbba27c1fe547d0cb8fc0966505ef9c6f5ce3683f755b8d771c26f32ed9. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/NLE422301308.
Water Music, Suite No. 1 in F Major, HWV 348: IV. Andante – III. [Allegro] da capo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16f9d5490247a5ced00858864ed2c0fdc67ed748ca27655f3f4803aa927f2f2a. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLE422301309.
Water Music, Suite No. 1 in F Major, HWV 348: VI. Air
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee1b408846fc2cedcbbbaf4992ace4deb349f48b7afdfdf4b902be0c58619692. 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/NLE422301311.
Water Music, Suite No. 1 in F Major, HWV 348: VII. Minuet
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6fe09b1771646e4ddfc085118aa08e67de0a1d0b9105c0b2bef1967a8dd175e. 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/NLE422301312.
Water Music, Suite No. 2 in D Major, HWV 349: I. [Allegro]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x562292d8c47774ff13fb818b5c9ac27fe631ca4ebca2d29cfb6962cf136255b2. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/NLE422301301.
Water Music, Suite No. 1 in F Major, HWV 348: II. Adagio e staccato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8b94faf11c37718409a6f858f2f89e5ae9808e25fd3f97283a86fe829eefb3c. 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/NLE422301307.
Water Music, Suite No. 1 in F Major, HWV 348: V. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe22a114b8e5d0f3ed04e176101a83578bda4dd876e0bc8db877d9551c178ec52. 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/NLE422301310.
Water Music, Suite No. 1 in F Major, HWV 348: VIII. Bourrée
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8b10792b7679933b8552d9757ef4c7cbaab98a94a47ae14567f2bd8fc0b3783. 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/NLE422301313.