In Solitude was a Swedish heavy metal band from Uppsala. History The band formed in 2002 with Henrik Helenius, Niklas Lindström, Gottfrid Åhman, and Uno Bruniusson. Pelle Åhman (Gottfrid's brother) j
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 0x8c20a32de49f454fea550e32808c6fb16a009f38cbad1f5cb22e683914d1e51f. Chain 2 (Bitcoin): anchored in block 953733 (2026-06-15T03:12:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/969d41cb-c9ad-4419-acc8-4c7f398e6ac1.json and https://artists.proofprofile.net/proofs/artist/969d41cb-c9ad-4419-acc8-4c7f398e6ac1.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 0xffeaeec2ca7c39042b396366844f711dc239301f68565f2abd2aae10f3e70ff3. 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/USMBR1309810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafa7db9cf82193a9d94bdd6012ece7fda7bfc1fc5fa9fe57ca606a5b9c79d0bd. 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/USMBR1309811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x831fd1595974eba810f26965ba501cc1efc00e96ff05fda03e5e22619339ab18. 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/USMBR1309812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x805b1e2d8ab257db7f09656b537e1542bd5115a706b5c1286ca063982af1c30f. 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/USMBR1309813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd4ace646239ff86189a173a94d6a7cd729638b0865f62599b625c81a18765b6. 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/USMBR1309814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x227844a3f83e95c6ef04f7824ed1b5dc68023f3b336e4fd1ab0ef6c8dcf070ea. 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/USMBR1309815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70151ba9f269c06cede39afcb3790d74f63b56e7d31c94bc10b9f58ddf2e844e. 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/USMBR1309816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa25b0c693616300a83706b36c30e46bbe6a8da2d8da3d0bf1da731d6f478fc5c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USMBR1309817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6f5d8ba64310b21e3ecd488556afe4efdfb12179300f7d69d178cc538c4383a. 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/USMBR1310352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03dd1db281e5e0eb569bf971b7be1478ea43cc11d06ecc4200c3672fc36edc1e. 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/USMBR1108187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x779b137f5f7221922753ae14fbc077807ee73078d5067cdfc36bfab6339b0927. 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/USMBR1108189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a24224f53e8c7db196856384ed709448d12e231d2f54b765c327adac382acee. 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/USMBR1108190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x145a50e02a2abf88d46b69aff73fa46c4d0c359be48c699c0e3adcfd35a41493. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/USMBR1108192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9de9791f8d4c751e3f552407ddd635f68d6c679caec2e1d127657c05102d0801. 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/USMBR1108193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3898ae51d350b021017383eaae6032fb0cb120fefcff49006c8d403823c5a9a8. 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/USMBR1108194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45df62c79aeeb621924491956c1528bc2b7220ca2689c93ea4421cfe78b8a780. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/USMBR1108191.
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