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 0xb374be562d6bf92a2b27c8e71477622fbc532761c381045a2b9ea40997614259. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/27a20b68-750c-470f-8f33-06a98f676ce1.json and https://artists.proofprofile.net/proofs/artist/27a20b68-750c-470f-8f33-06a98f676ce1.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 0xf90f739387391df8574efcdf25a3eb3ae8ed02f381620693853fefef4928f049. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCJPP2139618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03480fdb38d652d51b6288a1f4fb45088049c8b3d851a8e9492ebdd595b648d0. 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/TCJPP2139623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13aad5d04365e410705a6c0b823583ec01201fbca71a6f5f91db80ee8f68954b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TCJPP2139772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16c169198ce47007e67a6e39369f1cc0afdd92e4c3bb96666cbb2e44db7811e9. 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/TCAEO1996821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc2233eb0e3f944c544f7cbc48b332d60366819e98ef6b2079add1ab4fdded69. 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/TCAEO1996823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1600dcd6b36026eab7eab7960e98b8bbbe613896e8d16394ccdefad2cd254d89. 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/TCAEO1996824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d5d5884398318c52f235d2b16895528a7e808fc085b71173b3dde06db11679a. 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/TCAEO1996825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc945c122ec0cf6d04850609ff0547fa54045029963fea0e2a5f7e97ad5cf0122. 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/TCAEO1996829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0176a50dcf1d1eabc9d4fafb413c200e38a75ff1e779be74a9a5de2f5b79be5. 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/TCAEO1996831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fc68ee15f009c1109a2c3c1b0a5a96dd4faacd52c61fc421bef7c7a5a95fd15. 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/TCAEO1996835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeefbf3c9a4a70e26fd10416ea579c9c088ecdbdfacd9a2c1489a52329e580d2. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TCAEO1996836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x477c674f56f390fe3cc617ca60685b725217ab1bcb6799f6c76a8ac8677b8dca. 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/TCAEO1996837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc12eb53289d8fe40a81d39197b78382919f1cb5aa1258e87dfaeeed303908f91. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TCAEO1996838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6257b0a386fbaa794f993e668d889502a358981bb9279d4aa76f865a086e85b. 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/TCAEO1996840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47a90b369fe44f196e716417ae4eec40ee9de6d83f084962abe17f8224fbf93e. 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/TCAEO1996841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a7de323fb49c1bba69cecde4f20ea25d60f5ae8310de959c9d34d697a84923d. 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/TCAEP2038954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8be47dcdf246ceb107b8b589df81580df3b8ab46c430051fe3b8ffceeabaccc. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TCAEO1996849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31d6e86a14b5345cadd958758b124e6cc2472c21dd52e98b967ef0a63ddf0859. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TCAEO1996850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb34d83d48042b9ecc0d0e2e8aa5beb10ce8d7bcf9493a2128f3dcd675070c49f. 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/TCAEO1996851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b94caa1801e27ccee4b1929423eaed0e071cd281db8b6c80ad936069a2405c2. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TCAEO1996852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37b1eaeb89cfe886c4fba8052a85b012a5d38bb092370743d88556c0b18ef9a1. 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/TCAEO1996854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x068b76af2c8adf5da6292a37b641af609cad51ad63077741c0b22016348baa32. 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/TCAEO1996857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66cd8a644574fd153aa2ae558a334ab6235542c677981c9641289a13a3b4d9c9. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TCAEO1996863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd83771d642ca51e0b3c10fbee82928babe4f09564f00fbc4bdae4b1f6b351c4a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TCAEO1996867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81f79b54faad21d21ec7ebd74a7df3296209cf5bf80ceb51138f91de2228bc2e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TCAEO1996868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b07e595cf0b4ae50da554c59b5a925cbc74b11414ef9a6f632461d3bfadbe0d. 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/TCAEO1996870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a8ae13bf3530c01443a5cf8b9ff7e19bc5b8fb04b625701ffeaeb5043cf7610. 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/TCAEO1996871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa350548ce0c9d881dbd81b07f735fd20d86a3be999bf8fe5f00a9df3e5e96aef. 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/TCAEO1996873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf956f580a5fc67c9b5586d786364189b113e5ec12a625702b3c270c52d2d83d5. 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/TCJPZ2401508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd69f846357859d4ef515ff93f8fa02bb585e2aae18c3c2a8dd2f861a702cf6b2. 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/TCJPZ2401513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9414ee8a06f21ffd03fd85c28070cc182798928bb821ba642c28121d852c4ac9. 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/TCJPZ2401517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6013640b8bfc1658592264d6a85445940aa78f12e884411c5f6f84eea8fdc1b5. 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/TCJPZ2401555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbda81a2863093c2033bf903c479325d7fd0bc7f91764418d866f3d27a7397b3. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCJPZ2401573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93160bdf3496500110aae2e7f1dbb936a53e97f409bba30628d05e62ca6587ec. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/TCJPZ2401578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f24665d60160383db5a4a3ec4bcf79c38942272da0341e92bea51ba6e234c71. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCJPZ2401580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8844037ec2ae96035212aeffa7a809ffd969b50fbf446b56ec96cf4aa73db914. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCJPZ2401581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28633ee52d70e229efb6080e29555d76a1ccd6b71e27fc70f5446e5975a3ba8f. 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/TCJPZ2401583.