Nynningen ("The Hum") is a Swedish progressive rock group founded in Gothenburg in 1970. It released five albums in the 1970s before breaking up in 1980, then three more after reuniting in 2016. After
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 0x85bd44fc4ed3beae58124ec45a87c2400767db82a2f75ea082424bc556b800b7. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/eb61934a-aed4-4c4d-b312-accffe43faa7.json and https://artists.proofprofile.net/proofs/artist/eb61934a-aed4-4c4d-b312-accffe43faa7.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 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 0x68c5a61c6bd5c1edcdbb2c6513cb2d63e0c75faae6e2d039f09597f0fe4e5366. 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/SEXCH2001201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba2c03bf9e66161fc9e9a594840a407a2a5e9cdfa9fca0fee2aaa5792ff50f5b. Chain 2 (Bitcoin): anchored in block 960456 (2026-07-31T19:53:57Z), 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/SEXCH2001202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27872c5140d88415e3061ed1dd85cbb78894c4c3e229f9cc6768a79e0e9d4a02. 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/SEXCH2001203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a4d7c63f7c0a9d3d096b49a102b3fb16d5ed42d8a5899005721df1d9f59e529. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEXCH2001211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x958d5ae86354ae926ea4ccae6a3b1a6b396e78315c3f19c52b64dc376e27b6fc. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/SEXCH2001212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x091700948e2f8fd861aa4beb06c5a727fd66f656f637aa262380fd78a90100f4. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/SELAA7300301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25ef06f840351d746e406e849cb5f70b60a892763ec7e1550d9ecfcc8744c6da. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/SELAA0600207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2437d8828f143726771216057435d2d82270f3f89737661ee402d491cdd4d243. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SELAA7300306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce2db234f85976a44287f373d2381e0a08eebf576ec7eec6d720c9417e4d412c. 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/SELAA0600201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c5fe394bc8b3c508f47a11e7315858fc2edbbc23d4b9f91126c733ce8cf5334. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SELAA7400512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd90c6b4db1e91c2f8df1974129ee3043667ce2f2bb15e6fa09c8dfcb7fe86535. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/SELAA7801308.
Det är något konstigt med friheten - Live från SvR Tonkraft 1973
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96a1d75ab0180236c7f9b1b6a235aa82c07c1783fd87246a8233e9f22c617255. Chain 2 (Bitcoin): anchored in block 958042 (2026-07-14T18:24:07Z), 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/SEYKU1506906.
Den ena handen vet vad den andra gör - Live från SvR Tonkraft 1973
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85b1c54fc2997a5c12b2156b8a3c17caa99961fcf44a39bb2e93e6d8a1298c10. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/SEYKU1506907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce2db234f85976a44287f373d2381e0a08eebf576ec7eec6d720c9417e4d412c. 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/SELAA0600201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x228cd16c97e2d91b1f6cbf467c9894d10d15a2e12727bde13658c794dcee3e9b. 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/SELAA0600202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9184f4c38ebde90bc5027d51f1e0c2274f9fef675b648773bece9d4d3e1bd391. 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/SELAA0600203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f15fb57114a926ad98e5824f3232f7e5f19e98fcd83d17abc00225b0f7441a4. 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/SELAA0600204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72944dd587ad04ac0300bda5dd439f3b74fe0d2f5f529912b0029ab6546b1f61. 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/SELAA0600206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25ef06f840351d746e406e849cb5f70b60a892763ec7e1550d9ecfcc8744c6da. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/SELAA0600207.
Folkens kamp är folkens hopp / Efterdyning
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28b373ae3225fbb1445711d612c0c3cff564cb112516c5395c6d86419702feac. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/SEUM71900134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x209be9965412c449c780b1d885f9b6aa703a4d75d4f9e81b00ea86e31b7e52b0. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/SELAA7400501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1438a781d30591ad5c9161e42a3ee37e42380c82991224b6df1e665c618c2499. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SELAA7400502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c71a373c7134ebea7b4d0d12cd62da113b134830c32d7223a6c422f9ac7e72b. 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/SELAA7400503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32a16e3f276b096c54f8e54e279964351c2f77686a7a2b9c05b52420472ac559. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/SELAA7400504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa18cca2d215694171809f300f961c5c09543455fbabfbd13293c9066dcda966. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SELAA7400507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x091700948e2f8fd861aa4beb06c5a727fd66f656f637aa262380fd78a90100f4. 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/SELAA7300301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96ff9e1f4fd620c4a68e2232ceabb50f4b1170b5d86d46454e0267c26225f949. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/SELAA7300303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08ec952e87c28183255544eb667f782dc13b0f94bbd0f033487e87c7f37d73fa. 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/SELAA7300304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96cc669eba04781494bd85390acebf0c5f4165aafacd927d17491077dfda39d3. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SELAA7300305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2437d8828f143726771216057435d2d82270f3f89737661ee402d491cdd4d243. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/SELAA7300306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c60e13bc592da4ad5b00fd96d83363d7aa2ab7e39275a0b29965eb379744168. 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/SELAA7300307.