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 0x84921673d77ed3aa14548ef21a650eecc1a56ef7d8c41abf350d040f26be6768. Chain 2 (Bitcoin): anchored in block 954047 (2026-06-17T04:56:08Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/40faa3ae-e13f-4dd4-87e1-eb0dbf9c3286.json and https://artists.proofprofile.net/proofs/artist/40faa3ae-e13f-4dd4-87e1-eb0dbf9c3286.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x950f219887728b184b6bf72dbbb0b90451e23662a718676110cbe1a9a66e42dd. 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/GBLWD1001702.
Mascarade Suite: III. Menuetto. Introduktion ad lib
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5a5a6b4808cd667ac0cd69aaaa8213c027b62886a60f2ba65d1540f6e601a6e. 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/GBLWD1001705.
Three Norwegian Dances: I. Allegro con brio - Molto tranquillo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1f9f15a22596d3da1ba9f25ec3de4fcb81666cd4cb82cd88bb0470c16eade9a. 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/GBLWD1005906.
Mascarade Suite: VI. Molinasque (Grotesk dans). Allegro moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xade36ad7811c58d4d65e68ff5a0b5f05551b316140b22441fd8bc2166f32cbaa. 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/GBLWD1001708.
Symphony No. 2, "Fatum": I. Allegro moderato - Più mosso sempre
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5ef7ad68e8e1a4df2e0df5005315c7de406578e3625dbba39e9fe633540640c. 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/GBLWD1005911.
Fossegrimen, Op. 21: IV. Melodrame og Auds Sang. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a266f4afad5f01253a6708085d16a47dbb4b949b6f3ec6e6916c34378b25ed8. 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/GBLWD1104011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44e773954c60fc0b1107bfa802d051729432a99e642554c37edc7b29d64a8077. 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/GBLWD1001712.
Passacaglia for Violin & Viola (after Handel Suite No. 7 in G Minor, HWV 432), Op. 20 No. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae05febe5831ef56d9defebe9b757938353b2bed9d8f16c181fc5787abbdd760. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/GBLWD1202004.
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
Fossegrimen, Op. 21: I. Fossegrimen. Allegro moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c08eb1d5740a60058e7b090e3f01489313c53f7801824959ad263976074ed89. 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/GBLWD1104007.
Fossegrimen, Op. 21: II. Huldremøyarnes Dans. Allegretto grazioso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefaa560a47006c1b2fe4905b91e0673fbca83d13de444e944c9e23dcaab5d60f. 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/GBLWD1104008.
Fossegrimen, Op. 21: III. Bruremarsch. Allegretto marciale
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7184b4b99996a380a7571b7a6e5f03d5bf940533f471572193633645f1ae3432. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/GBLWD1104009.
Fossegrimen, Op. 21: III. Måneskinsmøyarne. À sa femme Annie. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5b53a3e7825234e42275ee4f7bb1528914a22465d4b2ed477d95d71540f1222. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/GBLWD1104010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2ac5abcbdb6a125589856a834d13d0a511f4ba219caa01ac89d91ef34d575c2. 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/GBLWD1108208.