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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe482695fb0865e9b146537b72bd6cfb35925ba7a1454471933b79f26c6fd17e1. Chain 2 (Bitcoin): anchored in block 953713 (2026-06-15T00:33:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/82d7f6a7-0b4b-4638-9d8f-3690e3469a3a.json and https://artists.proofprofile.net/proofs/artist/82d7f6a7-0b4b-4638-9d8f-3690e3469a3a.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e21aaf53161012a457b95c137f7d1e7cd6111bbc73a65e759661c5e85c334aa. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NOEHX2315010 — a six-check JSON result.
Holding On To You (Arr. for Choir by Kjetil Bjerkestrand)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03ff904d9a73291e5d61023120abbb2ee55e735d11fc1921d268f0cbcf46adab. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NOEHX2315020 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd029c161cf429bbb42ebb2313c9e8504295e8785ebf0a3136fc78fe831cb03ec. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NOEHX2315030 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe0783bf9c6e8470132783857a891f130da39cd27c3e3379d47426a9d46a280b. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NOEHX2315040 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87ab9e3e6c98ca1c511b89359eacc65b1284b8624d5742cba9475b55995b4018. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NOEHX2315050 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae838ecf6cda613940cc3850a330ee6810c812edabc98698b5bda7e934f4ac14. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NOEHX2315060 — a six-check JSON result.
I Need Your Love (Arr. for Choir by Kjetil Bjerkestrand & Ellen Andrea Wang)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f4fe6bb0f7cd80e62154433565febb99872780ba7c3ee653a89b1f9ee3860f2. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NOEHX2315070 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48517f75d40582a050a659814c6240c340ed439672ffea729eb0c8c64e520ca5. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NOEHX2315080 — a six-check JSON result.
There Is A Place (Arr. for Choir by Kjetil Bjerkestrand)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b9ba7275955c8807a91b76aa5bb6f05405db79f7ce2899bc510ecf474a4b918. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NOEHX2315090 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd5a59089d2866bfe2fb4d58467e5de31d5b40daa7e6301dc2b73b2dd0ab162c. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NOEHX2315100 — a six-check JSON result.
Hem'att tel jul (Arr. for Choir by Kjetil Bjerkestrand)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86c35966c65728d9fdc6df40990e8fd84139ddb6137d3ce4629e1fcb3467026e. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NO2J82305080 — a six-check JSON result.
Nordnorsk julesalme (Arr. for Choir by Magnus Klokk Fremstad)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde3b47974fa54b203d27d6371a3fbedaf16c12cbddc234b8b2b8c55fbc215f61. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NO2J82305130 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fc5555a8fc4ef28c170970b930c8bfa7d330139591d056e6aceebc30599ead0. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NO2J81902010 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75a7fb96f0ed37c25e1151d09f86d6163647e0f64e2cc9e322e3bf52859be2c7. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NOEHX1803010 — a six-check JSON result.
Vøtranotte (arr. Idunn Vindspoll Arnesen)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d1135f7756b1b1a9cb7603c080be2e6f1afb4239c04f9ed7a6a4e1509712737. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NOEHX1803020 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18ba785a0caad8c3e6ee057d622df16246fc336a1583e2e70206a770f604f6a2. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NOEHX1803030 — a six-check JSON result.
Bruremarsj fra Lødingen (arr. Idunn Vindspoll Arnesen)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51e1123030865d57af4c3016e85566ae24e69388c7916005f367793a9691a457. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NOEHX1803040 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa435f14971c39b0688dcc9e2db5171b7d32851346e1a4284b8ab422fc59b1924. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NOEHX1803050 — a six-check JSON result.
I denna ljuva sommartid (arr. Kim Andre Arnesen)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99a6f198755b65de1f9f17f92120d8e9f8ed5718d83b12d40bdce5cb30d11ad8. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NOEHX1803060 — a six-check JSON result.
Brudmarsch från Jämtland (arr. Idunn Vindspoll Arnesen)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c6c24e7bd24f01c2c0891eaed752fb5fd9b0e4bf0b31d0b47bd49b1fc123326. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NOEHX1803070 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x815eb0a50ac3f9c823e03b7c9b0603ce7dbd7d0e71a9927e8dbf1cbee15a9f1b. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NOEHX1803080 — a six-check JSON result.
Kornet har sin vila (arr. Mette Østby Kamperhaug)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe50a547ec15a1c53e6ac7e54a09f9f7e632f47c49120ed8f8a4699c7ae5ca680. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NOEHX1803090 — a six-check JSON result.
Bruremarsj (arr. Idunn Vindspoll Arnesen)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6932139667e3750c1e048ca7502e937c23ac888fae6705d95c1953ab87a82506. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NOEHX1803100 — a six-check JSON result.
Som den gylne sol frembryter (arr. Henrik Ødegaard)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf021532d7091d255cb36241c9fea0b717cba3b9934165bac2b2d6bdf4ed32ec. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NOEHX1803110 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef8a6e6456e31c51ff71504150b7699e29febe05c5e28c5b35e54b58f8e9c421. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NOEHX1803120 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a3682265315c60db9f17201bde124f497df14522b706e98e6d48b6cf99a1386. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NOEHX1803130 — a six-check JSON result.
Gud signe vårt dyre fedreland (arr. Marit Tøndel Bodsberg Weyde)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc449b30c50a48abdaf20255ec9f318c80924ea8fbd9063c35ee66c16fb47f42. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NOEHX1803140 — a six-check JSON result.
Se, hvor klarner det nu opp på jorden (arr. Henrik Ødegaard)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec79c0d2d59c19bd128976ed203e90448dbd3a0b2c6d04900a45434a9302b643. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NOEHX1803150 — a six-check JSON result.
Det kimer nu til julefest (Arr. Marit Tøndel Bodsberg Weyde)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0e1f29c146cf5541d6cda00d9fbc0f2dde918b272f189ee075d6a517bfdb37e. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NOEHX2018010 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32cbc1e639fd746c92e8738fa85929a91cb10adbea7ee6604410934544d1779e. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NOEHX2018020 — a six-check JSON result.
Fra fjord og fjære (Arr. Mette Østby Kamperhaug)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42f430965309ed30b50b43df8b0edfb7955c6536ac94a70fb395b3ba59efc17b. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NOEHX2018030 — a six-check JSON result.
Her kjem me, dine arme smaa (Arr. Idunn Vindspoll)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a664c4d05e947f4750a99c3871190b24a5406e620eb8de4f98d902aa3ad5b75. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NOEHX2018060 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99615e4a4b9a9451af1b6af427e921fa2a47cf9127ad04bedfe7effad927a4f5. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NOEHX2018070 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc87324d907ab7ee3451ab37efb65dcb72bc944895ef49e2db50b582f31f83568. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NOEHX2018080 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41e681c31df833951e1dd0c1edc40a6358851b96277d893eea692d1a9872af6e. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NOEHX2018090 — a six-check JSON result.
Deilig er den himmel blå (Arr. Idunn Vindspoll)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f8ee7362f11f3a11e1fe3ed296f55180bc3bff3483e51c3f02eee17e04574f4. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NOEHX2018120 — a six-check JSON result.
Nordnorsk julesalme (Arr. Magnus Fremstad)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32ce578a2b305b223dba73890a6b9d66a815e8b0484dc44e0aeed814c1fdbad3. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NOEHX2018140 — a six-check JSON result.
Drei geistliche Chöre, Op. 37 No. 1: O bone Jesu
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1d0a6f9c377de61903ce9def1d5b6c052716553d89878b223425f50d913f4ca. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NOEHX1314010 — a six-check JSON result.
Zwölf Lieder und Romanzen, Op. 44: Barcarole
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe75c8a8aa812071de8dfffaab1ead07f5b57270dcf0064c8d39148aea80769f4. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NOEHX1314080 — a six-check JSON result.
Vier Lieder aus dem Jungbrunnen, Op. 44: I. Nun Stehen die Rosen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x251751b41de47b0b2bcc27660194c10f8abe4909b9dfa1092598c9bce537d30e. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NOEHX1314120 — a six-check JSON result.
Vier Lieder aus dem Jungbrunnen, Op. 44: II. Die Berge sind spitz
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1cae9c3bc9aedd6b4cc93c98e3085c0ffbc6d9310cea3e378003ee456d4b0a9. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NOEHX1314130 — a six-check JSON result.
Vier Lieder aus dem Jungbrunnen, Op. 44: IV. Und gehst du über den Kirchhof
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3c3be1a301b4ea06cf40ad7d325eac45f3a105899d3e0f63756f752745ea1b0. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NOEHX1314150 — a six-check JSON result.
Vier Gesänge, Op. 17: Es tönt ein voller Harfenklang
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e6f2805d202f65e55c15bca8ac0bdea71abc479102888c0fb24c5d6b3abe1de. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NOEHX1314180 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x377aced5cbee2f596311bbdb9e57b05f5798cba4ab11a03bded91d858977973b. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NOEHX1314200 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fa22998f025d4f45d97e10d215fda5d4704fa0a2f4492a499e540054e7c6907. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NOEHX1314210 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e5aa37008c7862ebcb284a1390d79dd0f15c61df0b10c8401954d8336e8ad82. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NOEHX0907010 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cdf96d6174d64530dd2319f28344771b1602c91c2df31491d24367a597807d0. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NOEHX0907040 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a664c4d05e947f4750a99c3871190b24a5406e620eb8de4f98d902aa3ad5b75. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NOEHX2018060 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebd0b48f9f18623f30f479fc1ad3668bbf6414de4fbf331bf6dc8442963fe93f. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NO2J81901010 — a six-check JSON result.