1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x54b6fc832ccba6481038f96748876845171ad0347fce54920e029a82ca07fefc. 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/682a6eb9-de17-4d94-85c1-2066d30955b3.json and https://artists.proofprofile.net/proofs/artist/682a6eb9-de17-4d94-85c1-2066d30955b3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d9e2874bab956c4878750290fc91d00d717a5112f1885a0a18749680a3a542e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0RhAtx4dILKi4UE9NRtY8C.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/0RhAtx4dILKi4UE9NRtY8C.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71c1b7d8ead7493fef5d04aba6a0a330e77afd083a6509160b843083c2d7175c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/13bYfYndhmTJfwtsi18f26.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/13bYfYndhmTJfwtsi18f26.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98f054f4933f360ec4d7d6eb2496788ea7d3d18d2acd6227a7d2575e45447b36. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1bI4CPR8rvdd5TSEV8xwg6.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/1bI4CPR8rvdd5TSEV8xwg6.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x268999be7503e32b2710736a0163f16a818a24eaea7ec2926b5b07da2f24a693. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2YBQcvnNuFjIRt1JjaVxMn.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2YBQcvnNuFjIRt1JjaVxMn.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdad6f8cf159289112399e8de5425b139d3ff84e6f01d650ae461b943f3e8da80. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7Do1lPAXYz7ak18S4iwyQl.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/7Do1lPAXYz7ak18S4iwyQl.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07a2b1b92f5f9dc2c25aa5b79e3ac062858f29b3d6e60c21f1744bebee423973. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6JqYatMCB95qMntGu4G9JS.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/6JqYatMCB95qMntGu4G9JS.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa474b51c1a826fce420644b1c6a197ff5bb2efb2dcbf55c2a1664273db50768e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2V4bBROSenYQgM95ii4l50.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2V4bBROSenYQgM95ii4l50.
{"copyright_id":"0xa36ff54d13c46ab903200e15eafccc4ae9062799966986b260a88f997b85cb2b","isrc":"USUM70507562","name":"U Can Believe It","registered_at":"2026-06-09T07:12:05Z","spotify_id":"3fDpEGLyiM3TO5gUdEHtKp","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa36ff54d13c46ab903200e15eafccc4ae9062799966986b260a88f997b85cb2b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3fDpEGLyiM3TO5gUdEHtKp.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/3fDpEGLyiM3TO5gUdEHtKp.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64c43cc324584ad00b2b280e9d94474fa436aeadc62610b4e1e37af5d8098059. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/775BqssWNKRC45lJrtohP9.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/775BqssWNKRC45lJrtohP9.
{"copyright_id":"0xa39c34734ded521b9ac93fad24bdb567c3a49b056fcc795c65e0a5c59a3c5161","isrc":"USUM70845513","name":"Southern Gangsta","registered_at":"2026-06-09T16:56:42Z","spotify_id":"3y7iLrE5htKfGNm5Smlvih","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa39c34734ded521b9ac93fad24bdb567c3a49b056fcc795c65e0a5c59a3c5161. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3y7iLrE5htKfGNm5Smlvih.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/3y7iLrE5htKfGNm5Smlvih.
Ludacris Presents...Disturbing Tha Peace
{"copyright_id":"0xa6fcb625db79c866274a9d9c72c637aab503f694f2c06a26bf0cb2c28034f5e2","isrc":"USUM70506896","name":"Two Miles An Hour (Remix)","registered_at":"2026-06-20T05:11:54Z","spotify_id":"5PVhU3WCGsPGTXhKzb6RBW","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6fcb625db79c866274a9d9c72c637aab503f694f2c06a26bf0cb2c28034f5e2. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5PVhU3WCGsPGTXhKzb6RBW.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/5PVhU3WCGsPGTXhKzb6RBW.
{"copyright_id":"0x3144e61d1846ef7cc01f02fa1a0b9653db354e45e07e2a1d29fb5fa25810a3aa","isrc":"USUM70506886","name":"That's My Sh*t","registered_at":"2026-06-19T10:18:56Z","spotify_id":"7GBxhDTuMOEzltCaPsGk3X","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3144e61d1846ef7cc01f02fa1a0b9653db354e45e07e2a1d29fb5fa25810a3aa. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7GBxhDTuMOEzltCaPsGk3X.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/7GBxhDTuMOEzltCaPsGk3X.
{"copyright_id":"0x0444809f35aa6b2c35ea97ca614f8791acf8f47eb4fdf868a72205abca682ed4","isrc":"USUM70506884","name":"You Ain't Got Enough","registered_at":"2026-06-26T22:45:51Z","spotify_id":"3OBWLAosfzHCqTaDopCXMI","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0444809f35aa6b2c35ea97ca614f8791acf8f47eb4fdf868a72205abca682ed4. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3OBWLAosfzHCqTaDopCXMI.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/3OBWLAosfzHCqTaDopCXMI.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6391397465b4acc05abebeace330664c6d2cf0993e3d4800764d0cf5355065c1. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5WDva4VGtvh5aG78H936GR.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/5WDva4VGtvh5aG78H936GR.