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 0x0effaa959a26cdc2f12ff72df4aec4c3baf80cc69a1e97df5faf60ce3c53da95. Chain 2 (Bitcoin): anchored in block 953947 (2026-06-16T13:14:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/223feaeb-56b8-4892-8a8a-c522242d1c0c.json and https://artists.proofprofile.net/proofs/artist/223feaeb-56b8-4892-8a8a-c522242d1c0c.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
Pēteris Vasks: Distant Light, Piano Quartet & Summer Dances
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c9a4af5d7be19e4342f59d7baecca4cf4d987eef3aaf3ae04f904628fa6d8d1. 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/SEAEY1952170.
Quartet for Strings & Piano: VI. Postludio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e26c784cd7be8db58bf44611be5e6a13c64e0cd503dec1fd617f2aca8689587. 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/SEAEY1952210.
Quartet for Strings & Piano: I. Preludio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bbef08eeec306a6031b0f5a0383058b2d784c483aeefea29899123640322bc8. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/SEAEY1952160.
Quartet for Strings & Piano: III. Canti drammatici
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64a4faad6fe4da43693e71404cd9755e51639123d37b2e2616b787c1bef7efbb. 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/SEAEY1952180.
Quartet for Strings & Piano: IV. Quasi una passacaglia
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf163ee2080e89633aa41cde881d632a3bb241a0b72e95aa13bf283540bb8657f. Chain 2 (Bitcoin): anchored in block 960487 (2026-08-01T00:15:43Z), 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/SEAEY1952190.
Quartet for Strings & Piano: V. Canto principale
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8378dfd01929434aa7dbd905d01fc2a747b2209a6b0ac07ca7cd28cceb00ba8c. 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/SEAEY1952200.