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 0x0876f4e7679a3aa2e5559d394ac4c764e8f46b349ea2e4396d1ac84f6cc78ed7. Chain 2 (Bitcoin): anchored in block 953741 (2026-06-15T04:44:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a02c6b57-3ace-4194-8366-0c91ca838a92.json and https://artists.proofprofile.net/proofs/artist/a02c6b57-3ace-4194-8366-0c91ca838a92.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Trio Sonata in F Major, HWV 392: IV. Allegro assai
Handel: Trio Sonatas for Two Violins and Basso Continuo
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 0x44cd4cabb54da4459dc9b6395fc9696cd1ec19bd3875c2e3b796267353e1312a. 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/GBELX1606061.
Sinfonia in B Flat Major, HWV 339: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2367d9d86c4349d9098e7e32ab4574c9e6e1b3ea6c22bf5883efc4c560dfd222. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBELX1606055.
Sinfonia in B Flat Major, HWV 339: III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00348b584d8fa086c759fbbcd6761db4234b29741e8f0a1aa13ccebdaf9a876d. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/GBELX1606057.
Trio Sonata in F Major, HWV 392: II. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x172bce58351b731c7709c456a160e8def41bf4dc5d0d5f47afe17aba24f8f463. 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/GBELX1606059.
Trio Sonata in G Minor, HWV 393: II. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b9c4d1badd81900ab03868af19a37a9ede0dac5f1a7f911ac047d200fb17a2a. 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/GBELX1606066.
Trio Sonata in G Minor, HWV 393: IV. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x917d734d9f83f7f379eacad031f409036bb1689eaf601d9773c50d9b01c3906e. 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/GBELX1606068.
Trio Sonata in F Major, HWV 392: III. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58eed66efc83bf40b3a4a17abcd42313a3082713d71185f34776b593bb61466e. 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/GBELX1606060.
Trio Sonata in B Flat Major, HWV 50a 'Esther': II. Larghetto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35417e60f2882671a1b72e5d8b94641d1bfa889cee935b9b264789ffef76a7c0. 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/GBELX1606063.
Trio Sonata in E Major, HWV 394: II. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d210d56249ee72e7cd11e54e07f2712f0a0689d7325b29defba1c9198ab8149. 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/GBELX1606070.
Sinfonia in B Flat Major, HWV 339: II. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfff44ea1ad1fbb899836507b4eccc953e9f16d90e6ddffbbffde765232e736e8. 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/GBELX1606056.
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
Trio Sonata in F Major, HWV 392: I. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba07d8df50bb767348560aa1a1b32414b71c5962f20d40f79f42c34e2914342a. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBELX1606058.
Trio Sonata in G Minor, HWV 393: I. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe95854f42236f96535cef31ee6f484dc8a2444380ee41442696ffc2c981467f0. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/GBELX1606065.
Trio Sonata in G Minor, HWV 393: III. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x068971d21b2bbef8f6cb09a80299c4879757e238093ed75a7d79d70a1f170339. 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/GBELX1606067.
Trio Sonata in B Flat Major, HWV 50a 'Esther': I. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb4e003c0adbb30e9c5434cc1473e9b7735f9324565aceb05652f881ad640f64. Chain 2 (Bitcoin): anchored in block 960330 (2026-07-31T00:58:21Z), 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/GBELX1606062.
Trio Sonata in B Flat Major, HWV 50a 'Esther': III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cee2f224ce7edf1c8be550ba4b65b386bed3d3110d16a7a93df4a11552ce156. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBELX1606064.
Trio Sonata in E Major, HWV 394: I. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x080bb47ef66303cbe9295651c058ea1de474630839ba13abc4d52589f3c7c7a9. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/GBELX1606069.
Trio Sonata in E Major, HWV 394: IV. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fb4a34ca79fd40295901a5d2029148bd664599b26504d3ce57fac5751b4470a. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/GBELX1606072.
Trio Sonata in C Minor, HWV 386a: I. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf316ae80fef93cf53c57318b2aee096369ca54f684c336631ab4f68cab3d8fb. 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/GBELX1606073.
Trio Sonata in C Minor, HWV 386a: II. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x152924bf0b0a05bdbc2e9da6be7578d79709f556ac0fef0bb81db369cf6a600e. 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/GBELX1606074.
Trio Sonata in C Minor, HWV 386a: III. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb90df86910a477279519b378dfc4e05b624b6dcad78200739857073989079a4. Chain 2 (Bitcoin): anchored in block 960179 (2026-07-30T00:39:11Z), 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/GBELX1606075.