Tant Strul was a Swedish punk rock band that are considered as the leading all female punk rock band in Sweden, although they at times had a male member. The last setting before they split up was: voc
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 0xb2273e4db971bfd763aa42e31d61917cde37d79067cf297858e3b0e637115919. Chain 2 (Bitcoin): anchored in block 953704 (2026-06-14T22:58:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/77a0d1bb-076b-41a4-9762-8f275a2eb643.json and https://artists.proofprofile.net/proofs/artist/77a0d1bb-076b-41a4-9762-8f275a2eb643.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 0x7912602945253b7c70a5484c02db541f850aadb213d84bf736da812c2ffde7b8. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/SELAA9315110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa2ab9fc727563e804481630e9e3e43cf1954cdb51fc69c8c3fddb00b4ea713d. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-20T12:05:31Z), 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/SELAA9315130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf050995d50cc0b0cb3d28455c0d3ff85d378af8f4d250882c4ba4dae112e8743. 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/SELAA9315140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf550c98948434fb39729b33e445842e8d2372f91d4581f6d8514137f42856b4. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:09:22Z), 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/SELAA8200801.