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 0x501cb5a2cb8c2ae060f9cfe5e21148360a4e5c017624e6430c3e23a3dd72cc93. Chain 2 (Bitcoin): anchored in block 953768 (2026-06-15T09:30:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c0ef81e7-3ac1-4902-9473-fe4ce4c8cf4c.json and https://artists.proofprofile.net/proofs/artist/c0ef81e7-3ac1-4902-9473-fe4ce4c8cf4c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Koral og fuge over Kirken den er et gammelt hus
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 0xedf592b91a6ed09f946e34a0c8512e8fe5c673d36147ea5c44e58bedaf44a6f2. 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/NOEHX2403010.
Variasjoner over Med Jesus vil eg fara: VII. Var 6
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa909c8abdd0cd2e3b6c6fa3c027b95333b41ca14d045498e43a1161449766067. 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/NOEHX2403080.
Partita Hos Gud er idel glede, Op. 44: III. Var 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x965f3867b503407db074c7e0e3874dff8197ec7e74a384a207a0bd3f8b1cdaa5. 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/NOEHX2403160.
Partita Hos Gud er idel glede, Op. 44: V. Var 4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd12ba9bc46f4f7c4da50b8e177a0dce90bd682b07aa030bd705a6cd1e1d0a3dd. 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/NOEHX2403180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbc61804cbd6c15050053e93d6f85541b56a35fdce812705a194b732758dff68. 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/NOEHX2403240.
Amazing Grace (arr. for organ by Knut Nystedt)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f82995054790f82202aa525a6ae822a55259307c4445a733a667e10dc49733d. 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/NOEHX2403250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a99a997ceb863a67ecc71564f163e5c4377320cfbd333a7e61bc68098f39714. 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/NOEHX2407010.
Four Pieces from a Distance: No. 1, Prelude/Sanctus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67651e9cb4487697d4ca85383415070861e34de8606b81b8c3f0920afdcdfd54. 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/NOEHX2407120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b890a07fef1e9bff25b97713d5ae85bf75de510ba4dbc35f3eec7931bd815c9. 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/NOEHX2306130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x973e903f7e335fd519deb0c7426527059c2e9385ae5a30dc0049c954088a84d7. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NOEHX2306200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f283800ddc50f1038e575b0a125ae4d0d12e163df5298e846eadada5a65598a. 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/NOEHX1813080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd318cbd3ce8ad586074a7065a4245b1e173c9670054cc720c058d86ee6582a9a. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NOEHX1710050.
Nine pieces without opus numbers: Allegretto in D Minor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd07ac66730674bb01fbe5099c4549d6181941c3f9fce4c761269bb610a68b8fa. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/NOEHX1613220.
Six Organ Sonatas Op. 65: Sonata 1: III. Andante recitativo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd07603b2d3451144f28c4e83bfc09b3b281441f7e746f57fc635325cf6c86561. 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/NOEHX1613030.
Nine pieces without opus numbers: Andante in F Major
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01a4bd380802d166e94131181f41c104542405cd2c9f194d29c46e9d9380ab3c. 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/NOEHX1613250.
Six Organ Sonatas Op. 65: Sonata 2: III. Allegro maestoso e vivace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67e30b2bba4d1af2f255cc5ed1ba136130f6d06ae9e8fc947db8f42558264682. 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/NOEHX1613070.
Six Organ Sonatas Op. 65: Sonata 2: IV. Fuga Allegro moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x662bbe214b40a1772185d911a57538bcfc421100f54c37cd3403ed98208d4d9a. 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/NOEHX1613080.
Nine pieces without opus numbers: Nachspiel in D Major
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x713f979f3e5afde4926dfed1eea9482575a40d72ab0311bac30ccd5d74a09fc3. 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/NOEHX1613290.
Six Organ Sonatas Op. 65: Sonata 3: II. Andante tranquillo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3758324f4db790e95f0dc9cf0646f5b13fb2803aebb50c7dc8b9d9546cb96830. 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/NOEHX1613100.
Six Organ Sonatas Op. 65: Sonata 4: II. Andante religioso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95eb7e4094a08f4b89f58afd2e9c12714cd91277c863148556e061e18464f440. 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/NOEHX1613120.
Elementa Pro Organo: Organ Works by Egil Hovland
Koralpartita nr. 1, Op. 7: I. Langsomt koraltempo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbebbcd16e3e403e3e58a4882a3d0ea52b6886e2d6c0f2c98f51955e99246269a. 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/NOEHX1502010.
Orgelkoraler hefte 4: 3. Toccata over "Kjærlighet er lysets kilde"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57cae4ad3d4f37e6dc6c8f38751b876c45ab2f45627076ff71df631311427cc0. 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/NOEHX1502140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68e5c5adcbf6924b343e2065b4992cbbb071175f4d884d9714dcde96257ea612. 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/NOEHX1306020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ebd01e94666780d66be2b7002379fa1c89a7465f92ce0957053b05e8fe7b49c. 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/NOEHX1306070.
Präludium und Fuge in a-moll WoO 9: Fuge
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c3d9eedd6ed9dbcdd12abf7e0824cae3c230b1d4e4339272f4c288caded2aa5. 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/NOEHX1105020.
Präludium und Fuge in g-moll WoO 10: Präludium
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34ac0c5a35ae9dc846098cffcbafc7f66548bc394533b51f98aecffbe999278f. 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/NOEHX1105030.
Elf Choralvorspiele, Op. 122: Nr. 4 Herzlich tut mich erfreuen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3aa961cd4b4289706b902da501cf8b32895437a51ea0e5c8e19183ca346df94. 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/NOEHX1105130.
Elf Choralvorspiele, Op. 122: Nr. 5 Schmücke dich, o liebe Seele
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x304d4e39cee87958aad304a2819cd47e9cd088f7edda7b2d275ca44dc8e57cb9. 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/NOEHX1105140.
Elf Choralvorspiele, Op. 122: Nr. 8 Es ist ein Ros' entsprungen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd96284436819c47b2e95dcc7a77a15a7840b9c01b726b68d82dc23fd35130ce7. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/NOEHX1105170.
Elf Choralvorspiele, Op. 122: Nr. 11 O Welt, ich muB dich lassen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09872cae0b5d4d0c4d1539644b53f83989a3f6e9b15e4ced42ea14fd09899c5e. 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/NOEHX1105200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f82995054790f82202aa525a6ae822a55259307c4445a733a667e10dc49733d. 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/NOEHX2403250.
Four Pieces from a Distance: No. 4, Children of the Heavenly Father/Amen
Carl Michael Bellman (1740-1795): Sånger och Epistlar / Songs and Epistles
Fredmans epistlar: No. 24. Kara syster mig nu lyster (arr. B.J. Lindh)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33b77de82f77b173d151de94fc26fe6b6dcd62e2b91c466fff99e327d84a8abb. 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/USB8U1041728.
Fredmans epistlar: No. 81. Mark hur var skugga (arr. B.J. Lindh)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0bfa5d48c9a876dba4e004d7b40218e69f6c1a25006920af7ca9c004b6c6e8c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USB8U1041755.
Unexpected Songs: Nordheim/Baden/Hovland/Karlsen
Jordens Oro Wiker, Op. 31: I. Jordens Oro Wiker