Drängarna (The Farmhands) is a Swedish rock-pop/dansband that was formed in 1995, with group members are Peter i Österöd (Peter Simson), Sunna Robert, Lasse i Torp (Lars McLachlan) and Olav i Fossen (
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 0x2040023e904ff2d5157b3f06b6e6ab7ed4ac72f0fe13548a47791a8e2c7cfcac. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a5f97b6f-a9d5-4c72-b94a-d5a7c72000cf.json and https://artists.proofprofile.net/proofs/artist/a5f97b6f-a9d5-4c72-b94a-d5a7c72000cf.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 0xe1183dac7c4df4d10acc013bb05cee306f246ca3cbd7fa4094112a223d242c9b. 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/SE43N1601020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08da82b2c70436ae7bd9bb783dab649e20c83620bc078829feec00234e630cf7. 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/SE43N1601060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f311e28ea63574ebea21722daf873d4a89ec787111a946eaf8e93f1d174c947. 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/SEXER1000101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x946150738b8a44f7b3824a27c8c2696131c656f2896ee6e39799122c4ce2b7ff. 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/SEXER1000102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc230c6855b54eaa2e910da4cfc240c5bd4bd5453fa7b696dc6c61d50b66956b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEXER1000103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e3fc92700527c22442e39d8ebecad8a47a678c8e7afeb9600a34bf2a4be61ed. 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/SEXER1000104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce32874b1cfd15153093c1c3133743cbd21464d5a9d91377876b7e7a19b7dd8c. 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/SEXER1000107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04fc3c6f0702a3ff186b0c7233b2ad30b1fa150bc588f8a313518ccd69bc2ba4. 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/SEXER1000110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1d3369a095f0c654f98c01c3712f35003d2d6104c0e2b359a2833526162e2ba. 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/SEXER1200102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x673e332a82a12627aba24ceebb497a505b2bf5e042328112752dd5eef93c9f17. 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/SEXER1200104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfee8f112ecdaaca5eac33bd661506aa7d81e99359850ce97ff456bdc16276e8f. 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/SEXER1200105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2886cae3b670a8e1ece3ca588b53fc08572cf6f866f20442fefb66f75f6f3871. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEXER1200107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x986085a4a99860f2667cf34ba84f2ac7a363bfbd639c38ebe71aa8ff7f51fdf7. 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/SEVFJ0001010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29eab17aa66cf973a6706a09b5030edc77f29c6313808a306c2c9d711b25858b. 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/SEVFJ0001020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70de9e9399e26546121ddbf8c4cc3a3f45664fa9204b5dd6d43e912fa5a90f32. 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/SEVFJ0001030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadac3e5fce1813b4ea0a5f5211af6a0925d3e11c5ee00220c31b575f46ac7c12. 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/SEBIA9715030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94c7cbcd48270c08f0164d32b04c020461b9cd35a35b9e88e157045ad2b94e21. 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/SEBIA9715010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9e9f6aff9ea97fbaffbc4cecd1dfe4eda65dcc710d583b7a2c39028ac0bbeb2. 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/SEBIA9609010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6250d5016785625ceeb5f31ec715667611f43ac0b8fa1c3476c815cce0a3d4a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEBIA9609030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0700c9d6ec4b64fc22f5cb90f24a56f0ec754e60407e1eb091a42b29da175d9. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEBIA9609050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a22de2c1f10361cd22e2bbbd4985ede9e2351e49f3e9d910e44af0274c9ebc9. 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/SEBIA9609100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd63fb98b0e46ae8563e1d624351b83bb5be14564440d3a0f08f37d96a2d55a55. 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/SEBIA9511020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x056c207fd34c7996ea813159c26ef3510034433fd1edbc839e9db566ecc57dab. 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/SEBIA9511050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7079b26a2665fde96c5e64ab171d13c4a70840eff32c9741faa73d4ff89a4aca. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEXER2400101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18b5107456cf23626743f2761bcecf715e5c3c543aeda22999bcec388e6e95b8. 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/SEXER2300102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4792d9ca181825c9b64fab715908e07b16ce0532d9e2b091c5a8a0840225164. 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/SEXER2300101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd589669187a515c3d8c38ee732a2799934ed8c1425660a4de32ae3a96e8baecf. 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/SEXER2200101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5196d57b69a51d89ea3eb1938377837862db5cf8b76084d361c3827db2dddb5. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEXER2100102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x513ca481e78e09b348b182f1cdc63638ae83306a1caabbb10246b1b8fc578a7e. 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/SEXER2100101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7faabfa7e889b0ce6be2dc6a0ca81760335a443fd2b267f498d4c54b582f2100. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEXER2000101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f7a980d0160c298e3dc497596b43996a7b8882537c00bf284253dec4a77527b. 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/SEXER1900101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a290234de468eae4c5f55312e220808130d5410fcb27025d64401a3532f15a8. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEXER1800102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7fcb1b5dc7fca011d8da840fdbaba7d0aa9672547764c6e979e4c8fec4edb15. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEXER1800101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5cb536b50cde723ffd6c6b2e7ebde0d9b7f9fa49811b1321e2152095cb991cc. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEXER1700101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x031c6c14065e7645d0ebe9e798a2fa1f0c862b41c0bbc520e6c457747dd99292. 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/SE3OH1721938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cb9cd720dfecb3341d2abfd67519fd795dfe1e03c8b587b80b8d431a1b7431a. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEVFJ1400110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc46465ee9025eeda2113f112f573ee3a83df08d1628787520938549fb8bb4996. 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/SEBIA9804010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1897eac90023ac5468556fecdad9d16749d08eb00a4c9ea6ecd65cc69a4ec54. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEXER2400102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd384ccd537338fa4dc017e4b761ccf61a674825da553b465d934c23924f6f307. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NO2DY2400394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde91597350818b91826ccd97ef640d32dbedfc3e1e1ac5ec04ce1a403fe73b03. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEPQM0613513.