Nationalteatern is a Swedish progg rock group from the 1970s that featured leftist political lyrics. It was originally a traveling theater ensemble with many members, most notably Ulf Dageby, Anders M
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 0x939ceeea2f39c6309158bf4f1be3e8adc369d5d56a1dd55007db826b8587b087. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/33fa1e60-41a5-4937-a142-f2966366f83e.json and https://artists.proofprofile.net/proofs/artist/33fa1e60-41a5-4937-a142-f2966366f83e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Ta det som ett löfte... ta det inte som ett hot (Bonus Version)
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 0x47c43c367ede238a3d867c2f6f9acc75846d8c2858b29c2cdf79371051de66d9. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SELAA7200612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x379b6c168067d7754988d5952f4c27bfcaacedc7745f0bb172ad3baa9fefbf63. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/SELAA7400102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbddbbb792474bcf260a664727912db61f23f83591fa3118c12a00b13624b7ec8. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/SELAA7400103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ec120fd61450466bee5707b1e975f5a260883673d9567335619c4aadaede7a4. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/SELAA7400105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf47df939b259262fe9e10634b677555fb29e818db3273e968c6a6dffdcc59032. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SELAA7400101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d1f6a81afdc9dce660362207954c95d5cecadf08139bcbe9b59b8d648b679ce. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/SELAA7400110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeadf37828966a647283105bc7436089fa88e374c60b164d353fdc95c3c5fc33. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/SELAA7400111.
Livet är en fest - Originalversion SVT 1973
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb576829eecd214fc9d6d942598f762037724f1c3649a79b72433ca6c18395f25. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/SELAA7400117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb08ca5ced73d5e941c10907892076c6fbf49581fbd728dfec0a8acb35f15003. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/SELAA9401101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c13e14abb3d1559b7130845a2f342d1352fb865d236a72eaa1d1a5f3a3067f6. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/SELAA9411020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a1ce4de373df31f0ae981be2bb5a574e1de4ae0c9176c0a45a72f756d8f3cf5. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/SELAA9411030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aa3641364cdfe0d0d86739353a48b858079d3ed64bc4cf0f753cd9cd56a6bd2. 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/SELAA9411040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8241cfe36ab9fde3acabf96e741db68600883ac878d65812842ac973374dd0f. 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/SELAA9411050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03afc11ac97760d649843789524ba6f59b2019a83cc9a23f2bb3a355e7cfb26a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/SELAA9411060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e490029fc4e43e3f2de0b82f550356d96f3f66ff8920503480293304138cb78. 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/SELAA9411070.
Agamemnons stora ballad om flykten från sitt hemland
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f7fd9eb483b5625ed85a995cc85555458e7979c6c6dc81cb9078e9640a5ff76. 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/SELAA9411080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7d82f55f03b71266d220788f6f3865d3e4a901c64d5e0c4273d2c2c602ea229. 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/SELAA9411090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1fc0da7e0b33e06ac0c1f140a0947bf52e3e2b69ea17491ae05f84c6b22fb25. 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/SELAA9411100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x019ff1780e74b353678242be54189b09eddac9aa8ada280def8715ae92ef4699. 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/SELAA9411110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9029f325dc7c2907153a6b4be2b8a0f2f685d089f99d9d8c370bd086ac219b8a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/SELAA9411120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2b7ce35027317ecd1a984f5b211c7b3ca35062b3f88f4e2a18c11ae2d6cab20. 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/SELAA9411130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c9dbe39b04b09f310603a7ec9b2cad31eaaf0b8d19d9c1d2c911e8e7b96a49b. 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/SELAA9411140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d60bcda3ba140458ca7d9544fc0dd428d665f4d92e4438a3a67131ffce43b22. 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/SELAA9411150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5b1b59d4ed2ca0eafb9ad48f42228d681dcf581af71db77b9aecf401a1cb63a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/SELAA7900901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4e8a05c4c23d19618641a4cdcb503d10059c56baf274ab01477faf397f02c71. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/SELAA7900904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68a1b81fa4c9272ed3c61f583ce524d75eea6b0f95876abd641a845fcd8ea113. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/SELAA7900909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e541278ba475cfbf5c13f8816affe3538de4c2976d522b32b9170dba07bda1b. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:39:14Z), 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/SELAA7900912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb93d2e8ced4e3b87bb8b28f9d47595938a13b1275b9fb9117d1b11b1ca2ccf8a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/SELAA8000306.
Nationalteaterns Rockorkester - Live 2006
Nationalteaterns Rockorkester Live i Hultsfred 1995
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b1d642ada6861dbc56fac4e0b0e52df3ee238181b7eb55e584c13e67ed8edd8. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SELAA9500210.
Poppens Mussolinis - Inspelad för SR Tonkraft 1975
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x689323533b4be3cf5a5784eb36689dbc77eb3103f4018a373528de6fb59538f3. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/SEYKU1506701.
Bängen trålar - Inspelad för SR Tonkraft 1975
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf279e4f8a2a1ba306fadfb3c675924063152e6ef0d6d29223f29fa0844a862c. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/SEYKU1506702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd4f0c898ee50dfdb78ae10776b89161147982e3bf0c7802494df40d092b658e. 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/SELAA0201060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2383b083be5adce17b6dfbef0e4d2457969218ba806af59a95ad77fa1b62eab2. 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/SELAA0203501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49362144b8fa9150ac22d3955f48a76285af1a62965de5a3a816b224f37ef47a. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/SELAA7400104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x985aa680dea0a4bb2997a5df023f71280537eb0212fd302927f199cf6672ae75. 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/SELAA0203509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc50bf44deecb971975376bf4b9a11603e142aad1f91e6b22a00f27a7e8d536b. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/SELAA0203502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7c2a6f75731226f055d0b2c250de72564707747fb9801a8032778ccc8a585e9. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/SELAA0201100.
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