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 0x25a610464480696db7681ed510daa472be526d6f55469455e383de469411bd31. 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/f0d4c51b-949f-4dce-a063-7842794c6f56.json and https://artists.proofprofile.net/proofs/artist/f0d4c51b-949f-4dce-a063-7842794c6f56.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0xad34c26b8992ed6d46d31b5d4aa0ca1cbf47a25464f7328e2f157431ddb7a57e","isrc":"QMFMK1317001","name":"People Hear What I Say","registered_at":"2026-06-20T02:41:59Z","spotify_id":"1MsoNCtAFnpfKQVZbeEIjK","type":"track"}
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 0xad34c26b8992ed6d46d31b5d4aa0ca1cbf47a25464f7328e2f157431ddb7a57e. 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/1MsoNCtAFnpfKQVZbeEIjK.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/1MsoNCtAFnpfKQVZbeEIjK.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3000d9a120688dd222ae794b3343c30311cceabd357991282c5dc6fbeba76ab5. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1Jl6sr2oBmrCz520bc7E2c.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/1Jl6sr2oBmrCz520bc7E2c.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0340581f0b6dd3a2b145924cea48ed64a39dd7b7b296d5f3c577977480d1f3bd. 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/1oMAPy7VVM1HpA2prP9iem.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/1oMAPy7VVM1HpA2prP9iem.
{"copyright_id":"0xf8f72c07fb812e2992d601c16078b21ace7c0e24290709ce32ed5a4499e848e1","isrc":"QMFMK1317004","name":"Declaration of Independence","registered_at":"2026-06-08T02:08:42Z","spotify_id":"5dICB4zZf19JrNQJqVZqPk","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8f72c07fb812e2992d601c16078b21ace7c0e24290709ce32ed5a4499e848e1. 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/5dICB4zZf19JrNQJqVZqPk.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/5dICB4zZf19JrNQJqVZqPk.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x178e42d84ff71b186f452546d102a04c5c52811afcfa21df790049274939b53a. 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/41FJajC4vmd364hXDflSzX.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/41FJajC4vmd364hXDflSzX.
{"copyright_id":"0xfbb4b757feae3cfff0e46eed6bc6a0f0d2d3782b3e55503c173a9fb4c1676069","isrc":"QMFMK1317010","name":"Revelation In Slow Motion","registered_at":"2026-06-09T06:31:57Z","spotify_id":"1YN7UdgLxbcwRle4NDZBwk","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbb4b757feae3cfff0e46eed6bc6a0f0d2d3782b3e55503c173a9fb4c1676069. 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/1YN7UdgLxbcwRle4NDZBwk.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/1YN7UdgLxbcwRle4NDZBwk.
{"copyright_id":"0x8d51338e4e55ef2c9552334587ec3c396ca840cfe275cd0083ac52fc5bfa54a2","isrc":"QMFMK1317012","name":"Enchanted Flowers","registered_at":"2026-06-20T22:17:37Z","spotify_id":"0FLEHOhfd6UhFKZFGYLWqw","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d51338e4e55ef2c9552334587ec3c396ca840cfe275cd0083ac52fc5bfa54a2. 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/0FLEHOhfd6UhFKZFGYLWqw.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/0FLEHOhfd6UhFKZFGYLWqw.
{"copyright_id":"0x4faa900ded145785ecef19f00ff8c5c95853f250e8107820f4d89a7cf4644c3a","isrc":"QMFMK1317016","name":"Psychotic Reaction - Rarities Version","registered_at":"2026-06-05T16:14:01Z","spotify_id":"77oq56JTlEBzAH7KNZHvx1","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4faa900ded145785ecef19f00ff8c5c95853f250e8107820f4d89a7cf4644c3a. 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/77oq56JTlEBzAH7KNZHvx1.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/77oq56JTlEBzAH7KNZHvx1.
{"copyright_id":"0xee439497e0add19aa7e4c91a666ed9a8ebfcac2b24c9b71a58e9efdd75e28bcf","isrc":"QMFMK1316001","name":"Double-Decker Bus","registered_at":"2026-06-10T15:19:10Z","spotify_id":"2CsdxBheORI57QtinOAq2c","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee439497e0add19aa7e4c91a666ed9a8ebfcac2b24c9b71a58e9efdd75e28bcf. 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/2CsdxBheORI57QtinOAq2c.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/2CsdxBheORI57QtinOAq2c.
{"copyright_id":"0xd1caca9bbe02b54af98cc8987d35ef51cc8692eb185eafc8e6a4fb9268bd3f27","isrc":"QMFMK1316002","name":"Pretty Big Mouth","registered_at":"2026-06-05T11:45:00Z","spotify_id":"2rzsi8v63YA1LGJE4yLRBQ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1caca9bbe02b54af98cc8987d35ef51cc8692eb185eafc8e6a4fb9268bd3f27. 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/2rzsi8v63YA1LGJE4yLRBQ.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/2rzsi8v63YA1LGJE4yLRBQ.
{"copyright_id":"0xc69c929a9d18b7cf116609e94afe3b7d26ecaca4ce73f03b0feb5de9dea88b8c","isrc":"QMFMK1316003","name":"The World","registered_at":"2026-06-08T18:44:08Z","spotify_id":"6URPlvJyBNQfASywtcLKKj","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc69c929a9d18b7cf116609e94afe3b7d26ecaca4ce73f03b0feb5de9dea88b8c. 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/6URPlvJyBNQfASywtcLKKj.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/6URPlvJyBNQfASywtcLKKj.
{"copyright_id":"0xd223ac6a0af395c3b60445d40997f7f7bea1f4e1abfaa01f463e28f4e639424f","isrc":"QMFMK1316004","name":"My Generation","registered_at":"2026-06-19T07:31:45Z","spotify_id":"0JLoT3lRdwfcKCPZl8hFwh","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd223ac6a0af395c3b60445d40997f7f7bea1f4e1abfaa01f463e28f4e639424f. 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/0JLoT3lRdwfcKCPZl8hFwh.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/0JLoT3lRdwfcKCPZl8hFwh.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04677ae40bcfa20e22dea192f4b8620394de3ca820136bb3f2996cd618f47c8d. 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/6QT3GblCrwmg7eJlBfH2T9.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/6QT3GblCrwmg7eJlBfH2T9.
{"copyright_id":"0x07253a5f65c049db1e6d80e2b4ba29b01c139da9f40758ddbd91bc977ccee59d","isrc":"QMFMK1316006","name":"Psychotic Reaction","registered_at":"2026-06-04T07:40:59Z","spotify_id":"5JcaA4A9ZoXthwEnxOxWvP","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07253a5f65c049db1e6d80e2b4ba29b01c139da9f40758ddbd91bc977ccee59d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5JcaA4A9ZoXthwEnxOxWvP.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/5JcaA4A9ZoXthwEnxOxWvP.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73908c3b17809776472a5b48bee8dcfe3c1b6f98e4784324608bc2f24e6ad2e6. 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/114Q5BWvvCAFjbxlT4DitD.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/114Q5BWvvCAFjbxlT4DitD.
{"copyright_id":"0x87ab17a8e29f467060a91becd940ccdc7373d7c31f3fa60b4b12c8af3f0be254","isrc":"QMFMK1316008","name":"They're Gonna Get You","registered_at":"2026-06-08T18:43:51Z","spotify_id":"013WL56hj5pJxYRLzKXmK3","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87ab17a8e29f467060a91becd940ccdc7373d7c31f3fa60b4b12c8af3f0be254. 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/013WL56hj5pJxYRLzKXmK3.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/013WL56hj5pJxYRLzKXmK3.
{"copyright_id":"0x53731c5ad6476774450446bb6e613d50fdd2ae959c35ac7e289aebb82ae2733e","isrc":"QMFMK1316009","name":"The Morning After","registered_at":"2026-06-07T12:18:37Z","spotify_id":"3ddnMNKJzkPjcCXrwqqqxq","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53731c5ad6476774450446bb6e613d50fdd2ae959c35ac7e289aebb82ae2733e. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3ddnMNKJzkPjcCXrwqqqxq.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/3ddnMNKJzkPjcCXrwqqqxq.
{"copyright_id":"0x44fc56d0fe7cb202d04d1d060791e967d3c088aca94150d631ccf1748e7f05b1","isrc":"QMFMK1316010","name":"Can't Get Your Lovin'","registered_at":"2026-06-11T04:38:49Z","spotify_id":"2YU4ss4NQorRPfzgFoVGgU","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44fc56d0fe7cb202d04d1d060791e967d3c088aca94150d631ccf1748e7f05b1. 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/2YU4ss4NQorRPfzgFoVGgU.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/2YU4ss4NQorRPfzgFoVGgU.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd207d9659e0326c4af425a7bf86274895994c021edaa60acba3ac692478093d2. 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/4WE4CfG0M3VowaTa8op2Af.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/4WE4CfG0M3VowaTa8op2Af.
{"copyright_id":"0x07253a5f65c049db1e6d80e2b4ba29b01c139da9f40758ddbd91bc977ccee59d","isrc":"QMFMK1316006","name":"Psychotic Reaction","registered_at":"2026-06-04T07:40:59Z","spotify_id":"7meTw401cZWw2FG2xQ8p3P","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07253a5f65c049db1e6d80e2b4ba29b01c139da9f40758ddbd91bc977ccee59d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7meTw401cZWw2FG2xQ8p3P.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/7meTw401cZWw2FG2xQ8p3P.