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 0xc42229f48772d6c49f049d9f8c4d413f2c0bec572ca278d315a30a2fd678e2f9. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/734cd5ee-db26-4d14-bc5a-0c586bb1592a.json and https://artists.proofprofile.net/proofs/artist/734cd5ee-db26-4d14-bc5a-0c586bb1592a.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 0xdb0afe0072aa8b95223c39dd38b333bcb6e5327591b3d8ce4f493b9508b40487. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZDA42445710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b5b6ea0e6356e6b1db8666a5abc384c92fbc4427aedb5761386272cb88682f3. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZMEQ2401324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d88d1e78369f036bee3157cc82106ea10e423da7805720e3d00384365e1f058. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/TLVEM2469698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90e3b4f9a09cca7bbf373bf82420e1f73d8250f908bb28e69ef289310e97b416. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/QT2VB2421058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62d687dada68c97d01478c653e566ac9e0f8673314f9919c23fa9996f7034942. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:42:59Z), 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/QT2VB2421059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e1f6e49fe27c1d4138a1a7bb2ded840fc6a81d6b63857c9cc0596ba430a1d41. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/QZVEM1828724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9793abc34dc38d4ecd8ea4933c75eedf9766a4a5505be67ef401ef016a8e98b4. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZVEM1874444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0f9a7f088f5bfc42822a3b9abf24e0759388c816b20ef97b2ac556195c93716. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:24:54Z), 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/QZPEW2507928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e4076107afe839f7d9c99fb01935e0ecf79e2f3c960cfcc824eace03fa651d4. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:05:21Z), 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/QZPEW2526609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94cfed71185874384043e9ed870613f3558b77dbd7152306f93d559d695e72ad. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZPEW2550247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f2f6a65819abd0248b9380f01f72aa579d144c829badf984dc40131109f2c27. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZPEW2550246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb835f204abd786e3f69907152f1f8cf5fbe8d41d5e86d8110f97b1ad8e4e97ef. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-17T02:51:27Z), 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/QZPEW2562996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2efed397419aabe581d31ac1350e0be895eff34e2010044b536488fe8ab28ca6. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/QZPEW2589901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09953b35d9589e24b2d1b1bc2780c8950ce0420bff48cf4731fd36242276a587. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZVEM2540238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0130ad1d3e743698fd26c5eeb84abc4d58916d8030eec8510a2d9a35c8a1c1d9. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZVEM2568266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x230aba6d28ea754a0419ee83fba36f5b51d32347fda86b0e67af07aff6bd7645. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:12:16Z), 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/SGW502596184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c36dcac9075477f6cfb930a150a282cea41b0f339226ac5d5aa2b129617c186. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZVEM2584991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe00c53b56e1c27ba1a02bddfc6ecd378da2f4634a76867f39131ec09a3936e66. 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/QZVEM2584990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02fdf9defbee4f5b4fe51e913b1a09c4fee31a18f5ece8032a0f9cd3e31c7184. 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/QT4K32550673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f13c2b0c8392eefcaa1882482aebb3239937cff5158249ab8b789adfd3f7ae5. 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/QT4K32550672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa41cc4852ea85f7c410ff51d726cac8760df44496e796a955abdba032f5e6810. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QT4K32563704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0c8efbb8051666ab3b6969c9224a2ad03df9457ff5b930d7147fe3d6f8ccb70. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/QT4K52508901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f361be7a5f7762af5fd6674e3776884777ed8fcb6e5c8cce3dcabc6a5cbfe64. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QT4K52513874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa90a6aaf473e9d7843f877fa79c36d2e11d3461486860c26e73e6364d54340ab. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:04:56Z), 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/QZTB32573911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab3a585a1635e3ac1993be191da4257504d22e34d1f0548ba6f0a2f5bdb9887c. 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/SE6XX2591711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef799713d12cae34cb466038069a74e6f4194b443333eadf21b2ac90f963702d. 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/SE6XX2595816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc53342ca7c807394110364256fe148ac3c9ec603cbbebb910675ea9aaeb55731. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/SE6XW2503847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8692cffef4b4d33c15e3cea161ff487f6dc167fe75b1d4f84acf6ca63771bbbc. 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/QT65W2532266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda56fb379b4474b22b5c9a558a2e7d58b015f64f1af3724e3c9274174c7f2f6a. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZZ7V2506472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1e92ea882db6cfddd9e392bbd5a43b69cda3428417f4fa50c491e57a231851d. 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/QZZ7U2579578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81c80afc5ae7b4d963143aef18650aecbee76e6e4bc09738aa929f1c17766347. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/QT65W2575122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x669e1426214bd6ee9365768e300135f78fc4f8e6e5df7245c890723cfcc14acd. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/QT65X2584720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a032a88c54a1085f629e4efd8a62ef3cf58ea0660f84c347cea3f15044089e7. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T10:49:57Z), 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/QT65Y2568306.