{"copyright_id":"0x27fea6b0b0f83e711dd98e4f3f7eb1dc7b7eeebeb978ca8a13a8eb770a7faa6f","name":"Kurt Widmann & sein Orchester","registered_at":"2026-06-17T00:51:03Z","symbol":"NIM1229231","token_address":"0xf5676ab80b27efcf77cc27a90cebd84fc8b3e23f","type":"artist","uuid":"64fb677d-d05f-4667-80c2-066ea04842df"}
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 0x27fea6b0b0f83e711dd98e4f3f7eb1dc7b7eeebeb978ca8a13a8eb770a7faa6f. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/64fb677d-d05f-4667-80c2-066ea04842df.json and https://artists.proofprofile.net/proofs/artist/64fb677d-d05f-4667-80c2-066ea04842df.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 0x87267a371110b936bf22adde891fccc2e7b99eec6c8204267198e0e60f13fa5d. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DER751528401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20ab3e99df24e16378862c2f69fde4f0c2c2db479d31bed444d26974998f13a9. 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/DER751528419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x784c8db1e7aef551c02a422d4f5f137ef13659585ee0f3c8a93ca990311c44c7. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DER751528429.
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 0x168fc6b81d1b81be1d27dd7654e250f23d53df7204c3d24a8fc062a1da8efb04. 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/DEG411296508.
Haben Sie schon mal im Dunkeln geküsst (Jazz Club)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a897590d2eb15cd54dc803ebc39974f0caade00591a59975d0e2cc09bc2ff43. 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/DEF064002100.
Woran liegt's, dass ich dir nicht gefalle
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc32a3b65e3838fd11c936dfa3c2c463cbfe90ce4df25b307054efe4dab37aed7. 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/DEF064002130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40a1c3f955be97823a5040ea1b17012eee2bb6e3640c525d69d640158b0a9690. 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/DEUM70801330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x464f2530dfc2da867872403567807e322dbdd2c223b90a150a37b82582139a14. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF064202450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4af59f669bd8e1e358c6a758d0d3b20062ac6228d5db7053cacb21ea015611fe. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEUM70801321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d862e9c2919f71bdced9f9fc1502ec87720c97c142640397e1e3833f83d458d. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF064002070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb41826260dcac3ad03d6da340367a486333d503ff225f9f4f5170988d8bb93b0. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEUM70801328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd515eb7c618343b6f952296933e81e9a47dafba3d9f4876bc6fe2af96379451. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/DEUM70801322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f06f993080d49b68e59af0151a50b6a0c9e8b5232d737aa9decbd723597361e. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEUM70801332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82d7d9928c17493722c00879401acb6af4474e2e49c18eb63ae63824cc33e611. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEUM70801329.
Swing tanzen verboten - Unerwünschte Musik 1929 - 1945
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3c84f95c408a17beb82764b55c07bd367231c7b140a233c86cbbdc275bce4c6. 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/DER751417106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39a2c12e63a9ea59929e2a589082563f377293fcedad79e056631ad3c538b888. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DER751417146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d5b34381be908461bc1e8b7d31f8c791bf187cdccf3054cc05e44889e8e7a4e. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/DER751303905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5489fb4b580e51ddd870e5ba9886341c7f5876a01da9784c3751fe201ddbc48a. 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/US2Y30711398.
Kurt Widmann / Die Großen Tanzorchester 1930 - 1950
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe13c42d110b48efbb1f610015b89079f514df379f8d868dbb666d877aae8c1df. 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/DEF064002160.
Swing Jazz: World’s Best Big Bands Vol. 04
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Swing Jazz: World’s Best Big Bands Vol. 03