The Obsessed is an American doom metal band from Potomac, Maryland, led by Scott "Wino" Weinrich. Formed in 1979, they recorded a few demos and played a handful of live shows until they first split up
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 0x73e7eed01d40ba359f1ac3fb30020e5c8002cd3a890f425dc7b9681e26e32738. 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/dbb37152-2642-4c0b-b17f-79254bd8efd5.json and https://artists.proofprofile.net/proofs/artist/dbb37152-2642-4c0b-b17f-79254bd8efd5.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 0x57b3f717d2cabb0d5573f01a8393f351e83d153ae991eca6b2aef9d66f8e0efd. 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/US4B20600357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6cb83e2779fa9167d6542ee3433650d3e2790accb6729852dc39d0a9b060fb3. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/US4B20600359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d9d5528d6d1d4d9685ab4997f03ba4cf3b1787c2800d4b82ee603f1ebc32961. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/US4B20600360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40672c586cf7f2ec6e529fdd92aaf2bd384f64fe0bc6dba233ef05c1724804d8. 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/US4B20600361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf211d5deee41d68bb6eb43ba2d54d0e137b4bbc82a260e99b29a896bfc67f8cb. 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/US4B20600362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1bd4b17cd4d927978933ef635a6af55100d15c09ee775407981a424845242c7. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/US4B20600365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3442f9c100179249af4d83bcad242d4e879c75592c31feb3bd9eb28966d7ad3f. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/USSM19402772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf431e82a840e5e047ec072d72bea16b45de77b946f69cb1473b39791076fa4fa. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/USSM19402773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc495b0e1ee77a05b225dc7ab9820b0f3c2c0b50301c471068cf234e0bda95694. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USSM19402775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46174041c1518979c110f74ad880010f412c5c66ecb0fc422c714691eb6ca261. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/USSM11100423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2da59cef3cb7c02cb821b7fab719e526b73d8df6cc552f840d00de77f76cec75. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/US2641736102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1fdf540e4a2005691002e6fafb32c0cc2711660c2952b51f299109f352feb75. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/US2641736103.
Mental Kingdom (1984 Unreleased Concrete Cancer Demo Cassette) - Single
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cd1430741c1ed28418afce39e641023b4dbd9efa01f5b15625de0776605a162. Chain 2 (Bitcoin): anchored in block 959355 (2026-07-24T03:24:16Z), 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/US2641737503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea090d73ca202d57aeefab0ba385ac83b324e3d5a8ad53b50d127de2e02d991e. 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/US2641737504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeaacc0437d4e4bc4d15350c68d5eaf6eeaf6c929c2f8dd26cf50202a093cafc. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/US2641737505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a76e01d28ae8928a3dd115ca67b5312096bf9d80b6377963e8a425381f7dc74. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/US2641737506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b7182347a84295fb555bfc4f15de0564f2b759b42342fd675b2a9e596f23edc. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/US2641737509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd84181bd8bd51c0c66ddc5548c29330397fc0a35e09640e24239338e9e5074c. 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/USY252323776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c522233e5d8f1e89afd5848b78fce82079ddbcac4717a05e769309a88a32055. 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/USY252323777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97e216681b9b572357f28de65164f19f98464a25b3d874f02d06a275dd9a1694. 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/USY252323778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa70578708bdab211580e89db253a03b03f658ba25307639cf28104b4df037c82. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/USY252323779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb4eb9bf458612fe3fe3083d42869b66baa5aa70a58720eb9862ede8530f90d7. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/USY252323780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2088e8e5df6c7bc8a5fef038d2531f7a51ce98765a5205c43bbd7c6f2c168cf0. 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/USY252323781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xece0ff5d3bd865673fb4673eb4bfaa46c68adc2f1ff1febbb7c42d1c8ddc786f. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USY252323782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3991d9c3ebe1838938dbff08c32a3e05b399ebcd4f7f75e4e7e35f04b038e78. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/USY252323783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa660284ffb0c671d33c60493ddad5b410e0684b5c66ac32fd50ba8da8bf95393. 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/DES562015502.