Per Arne Glorvigen (born 2 June 1963, in Drammen) is a Norwegian musician and composer, particularly known as a bandoneon and tango player. He is mentioned as one of the world's leading contemporary b
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 0xf993c673b3f5fdad1a138a9fca1a70898b3b8366d82a59f6537c539e64124109. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/855a9cc7-e826-4ef4-a503-307d8b33bbb9.json and https://artists.proofprofile.net/proofs/artist/855a9cc7-e826-4ef4-a503-307d8b33bbb9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Per Arne Glorvigen: Violent Tenderness / Kykelipi / Polaco
Tangos Argentinos y Piezas Líricas de Grieg
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 0x245ad2165cb0d8f7f96d57acf34f4af153b0502a1b0fa874e7575bc2e3379e08. 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/NOFZS2416090.
Piazzolla / Orch. Gupta: Concierto del Ángel: III. La muerte del Ángel
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb325b494575447ac6b1321a971a6f085693a9521fb11f381cf21a1f75f72b08e. 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/DEA809813603.
Piazzolla: 5 Tango Sensations: No. 1, Asleep
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33ee03bd052f882f5e87b7cb0e6102446ea8e8260c1f657de341b436db4dceb9. 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/GBAYC0302877.
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
Piazzolla / Transcr. Gupta: Concierto del Ángel: I. Introducción al Ángel
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f570ed60264d77f73daaefdb3d8a594ac41fbcf24a3a36eb80bc4a198debcff. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/DEA809813601.
Piazzolla / Orch. Gupta: Concierto del Ángel: II. Milonga del Ángel
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15f871b62ff923b6710d41af84d751a0093f4870f18dccc22888b1768cf50090. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/DEA809813602.
Piazzolla / Transcr. Gupta: Concierto del Ángel: IV. Resurrección del Angel
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x522b566b6a825e4280788e05a2ffa7869c92336175176b0283332ed981169330. 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/DEA809813604.
Piazzolla: 5 Tango Sensations: No. 3, Anxiety
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x765d7989a5668201e218dc0681592d49a0d4f2580525c439a5e99ce49488ca3a. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/GBAYC0302878.