Skinlab is an American heavy metal band formed in 1994 in San Francisco, California by vocalist/bassist Steev Esquivel (who previously was in and would again rejoin Bay Area thrash metal band Defiance
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 0x4762d50622a3e2764b93a4a598c001e18ccd2f5a25f344de8af6b4b806a12739. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ca16c4ac-5030-489f-99a5-aa41e626dbf9.json and https://artists.proofprofile.net/proofs/artist/ca16c4ac-5030-489f-99a5-aa41e626dbf9.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 0x0250896fbf7d681eed02a0295c62ad0d4d08f9cf6b3c529bb88c09480e59aa5c. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/US4E40687401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20d1dac45126c20954eb09797d689957410b3dc90bdbc58649011308ab51972e. 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/US4E40687402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dba24e3ba1a85e3c10520e9a01fdc02ebaa371263e36ef9856563eb7f15f80c. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T00:07:05Z), 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/US4E40687404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18dd3bce32608d54a1d396bbeba404895640f8d0fb165011c704fb059cec67e2. 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/US4E40593803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x780b0d32e9f9f1e1d4ce555a94167b6844134db8dab18b8bee004056a47cecfb. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:49:19Z), 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/US4E40593804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3837627289cee793bbb55cf58f1612915209da0d18edfff1d5c36518a9594315. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:08:36Z), 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/US4E40593808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ec35d9c3ac1ef0b59c66fc15c22738deb019b0ae4c76651f9a31b5112ef263e. Chain 2 (Bitcoin): anchored in block 957705 (2026-07-12T12:50:42Z), 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/US4E40593809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc88a01b2cfc8618100cfe0598bbf33443cf0a8ea336508bd38a86617dbc356df. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/US4E40406504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b1accbf883c81c140dc685aeb6fd2050b7a8300b5f8fd3f6c54b6fc283cb15e. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/US4E40406505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bbc1242fc849ee72b0db6921fdfa6253ee7b43507d96456aaaca34f3acddb61. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/US4E40406506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd714a2db0925dae40138a08aff1fadf968ac07f5618f61830ba1779a6d079762. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/US4E40406507.
Bullet With Butterfly Wings - Cover Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4df1aac23e798324379c1707b585d478c1f3c8e5a4a24eb62064a28c3dab813. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T02:55:36Z), 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/US4E40416509.
Bound, Gagged and Blindfolded (Re-mastered & Demo Recordings)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ae89f440b9c20bb6b6a319d38bfe6f64339565df91f1415162ef403f6555bba. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QM7281954527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35a0e1decb6382c235994b5532af211de55ae65faa678ce291fe64c2c2ce19f4. Chain 2 (Bitcoin): anchored in block 957711 (2026-07-12T13:56:57Z), 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/QM7281954529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb77af52316f5526df44c2ab6f9f1306f1d7de9ad00796d1bc7fee7560a1186ff. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/QM7281954530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96ca5f3d55e8c78d2b65947c75fd42ccff3cdd2c17aaa8143b7fc26b9581ff1f. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T03:19:04Z), 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/QM7281954531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a8a8fc1e82a37eeef34883216d7d04726f3191ea9d2b2c62ebc3943cf787844. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:46:55Z), 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/QM7281954534.