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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 0x9112ff9c3bfb287fbb43e54ce1380576af854093993ab8c88cfc5e14007abb52. 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/cae9833a-0659-486e-b9d3-ce17aa3c519a.json and https://artists.proofprofile.net/proofs/artist/cae9833a-0659-486e-b9d3-ce17aa3c519a.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 0x56534e8f0f7a7cee7e40b64f0abe3ac18ca134353570925a8dca02e4ab89489d. 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/US7VG2431674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96e907ab70b6d282bb70be54fa74c719b4f6091e5d0c47ee03d968cc10541527. 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/QM4TX2202141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25a1a5138093a62e64ad6cd5bf74967cb30f1eb4a16f0ea9d68f2395a320536c. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QMFME2102736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbb0403fe9291786bc949d9e7a7e9dc4ff0d58743dfeedfaf7401560f343a075. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZTPX2392459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c1cded01ff2fb6e74dbd68a1c55598b5cb5f5a04546c8d805c7ef30be07d481. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZTPX2392460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ec6bfd7cf16c2fd888d6798bd9b6da4a780e5a0aa0f6a54f00b2f7c70fefa76. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZTPX2392461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1da9fbd763354c1e4a8f3f4ff121ecf719ddda0e40c70753c92a61a1449bb37d. 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/QZTPX2392462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x414b339858cea08b51a3e24ebf3f294133f0ef4111f0f2596678bd927bcef420. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZTPX2392463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7bcb98cbd7c52d89a0f3cc3f2b0aa77af3d01e5f8b48e044bbbe07b0070563f. 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/QZTPX2392464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c070c38da0ea0cf6f42615d2b0f240d0df247f7b02c08b0d7cc0b275403bef8. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZMZ92385512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc68b330e836a0294753ddb756afa4a321931ea18dcc9d9fb354b0482c0611888. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZTPX2392466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5447e100c2bf6d7aa6bc7c1b11e9b2032d84bdd4fd97372e650c52179093160a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM4TX2196552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a5e21c12df2583f9e61610b0b7859a1809c87b992c16abe52a6262ab0ea3813. 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/QM4TX2196555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd2837d0dd3a57f1d4096d820510d22b1caf1a15fd12268b5bd2ddb9e59a30d0. 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/QM4TX2196556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf1a930bb0a5ce08ce3327001e367e5637b0a56bcdd225db4c18854b8cd2709a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM4TX2196557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d8c5cde9d711e7fc7023a43d89cd5efb94a33678dd9229a17a8388da6698dde. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QM4TX2196559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x663c2cf86b94e86d966b95c176c258068a682b0bb92ea094ebaa42d200833c3f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM4TX2196560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf42424325dd46d698b7d533dd5e914814dbe2d0699abb969b42835b56f530445. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QM4TX2196561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffbdef54e493affd1b578c18f11e1372a3a1703d3d251facd19579fbe846d614. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZHN31925592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d7b747690d798c9099a3919f3ef361e55e7314521a84bcaf44c6654b57cccee. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZHN51927184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22c1e82ca1fb5e82bd7ca9d448bd0ff0538ae0325036ac278968f95957833516. 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/QZHN51927185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3556e1fc2585c3f6c56a7dac66af6cfb1d69358cfdc835d2fe1822e47b7e4f01. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZHN51927186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdbd6555c10ca8ce4a6a0de8d2fce4c46ebc1f8ddc7d3fde42ecdb5f339e1197. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZHN51927187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x235fee11019ec5613ae20061132c2e55ef62d8efcf369d7c212daa65a8d432ae. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZHN51927188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefab3495ee03f827640235afe70d247ec4944bf51f3eaade0c67bd96f2bd28c9. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZHN51927189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba13117d48194c42f83ff070c4a33c0546ba88039f7f158008e50a5514a04222. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZNJY2415210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe604b0f1be1d361a8f73d94d4acdb89b54d4c574b80d6fe39f72becd19db9730. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZNJV2471218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5179b940671e14049f91917fbf8b0bcf9263570e83d962d66caec0e3f530f5d1. 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/QZMZ92414208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c070c38da0ea0cf6f42615d2b0f240d0df247f7b02c08b0d7cc0b275403bef8. 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/QZMZ92385512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8849c253e893ca12d6beaa056ee1a794b920532b0c24f48c85d8313fc477722d. 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/QM4TX2202134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa213787c4287423c6d0bd48a5257211793acf2694f65e94ca1e0f3647af408f9. 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/QM4TX2202122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fa9d1e80f0951506850a82b4cf5bae6fa4dcd8d89b7b4193379eefd94e79ac4. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM4TW2213943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffbdef54e493affd1b578c18f11e1372a3a1703d3d251facd19579fbe846d614. 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/QZHN31925592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x315929dd012235833919f5e7123dc68b6382e49ace72d70bcba252af9534c9de. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZNJZ2491279.