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 0x28b94ac4096dbd764132f43ca3b6dc46d69c753a35e4dcf2213e1000909cdd37. 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/fc5df5a4-ef84-4358-b8ed-5c321a6f72da.json and https://artists.proofprofile.net/proofs/artist/fc5df5a4-ef84-4358-b8ed-5c321a6f72da.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 0xe4399ade4f21063e22ee1c1e8c5c27dab495bd98064b09cf99d01a4f4a19365c. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/GBMA21986843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2fadff3a40cdd7bc556acf7c38c750bb10a71bc29423c143a6ea7dac7316b9f. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBLFP1964549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2c9d799ee267ff87a7144394de42973ae04f5cbc78dc1c360ee4b7407ae39a1. Chain 2 (Bitcoin): anchored in block 958676 (2026-07-19T05:43:13Z), 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/GBLFP1964544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89328d81d14458ccd2f4833dd1fa59c1177b22ba03475a28f39f5d838c435ae1. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T02:06:09Z), 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/GBMA22035485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x959ac185193176147cecac13c6583445e56a1148d146631a448bc86c698e2c62. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/UKZGC2201028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3087e67f8a8fb4c5b71428e733030a643ebc2ad608e0829897e383a531495d59. 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/CACWV2045336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6abc37214a7ca553dc04d0bd3080e09e11e6309b43286bd705ad6c3e8c7fb70. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/CACWV2045337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd15896f2211cb9c3764eb8675bd088e850a3d0ffef01aa26e036d23087c12b33. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/GBSMU8525015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9f4be09945cc54b9dd975f55482438d17f27c1ef1db0299d8b23d651053f11e. 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/CAHQJ2139377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x430f0949cdc765f993e08b29ba5b6c23fe90ef11ef1c8a685307a5e10e5e58b3. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:04:51Z), 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/QZN882244468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c4490a3d88a7443aa2b2f8e81a069c229e03243f88413b6331c5c7d068bb3ff. 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/UKZGC2203165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1ebdfb7ca59e83ca37c78c042509914f4899514eac5a8e777861ba37c519176. Chain 2 (Bitcoin): anchored in block 957565 (2026-07-11T12:18:39Z), 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/QZYFZ2312972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a623f0614d0cb20e5f351984657ba37034ed01a8feec1328abb9f2b704f6ac5. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T04:49:33Z), 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/QZZ662303137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1992ba9f17cb83ea74206f1baf6a241cf2c4da73588b32eb445731d5eed58d3b. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:13:37Z), 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/QZZ662408333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbafb0ed00fc9cced3d8f9a24616ed56bbe0d84aacf0fc400be936d2521cc9255. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/US83Z2476232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaac288b3bfede1add240231a73d0ec158cddf6431319fa6439ace492a2d0aa6. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:22:18Z), 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/QZWDW2445746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a623f0614d0cb20e5f351984657ba37034ed01a8feec1328abb9f2b704f6ac5. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZZ662303137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x528640e25eaabbbd72cd350319efbbc887c6f5e5a6e4d967c201dfa43fa807a7. 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/QZWDW2445748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f90cae9085872a45c4bf6c3d9ea65ba287db83597ebb1960d4c7e169dcc7e80. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZWDW2445749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d0b4711aa332511f98556ca43eb7cad5673cab3aeaca5b78d9037815dd018c0. 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/QZWDW2445750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb063fdfa51ac318a22c28ad9def959fbf0703dfb44402b1c00905cbcdf8fc969. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:34:54Z), 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/QZWDW2445751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ceec2d2f95ff5bb3cdb614ca493bb9ecf53b36f11fdfdb2d8f53a45acaed71e. Chain 2 (Bitcoin): anchored in block 958776 (2026-07-19T20:11:59Z), 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/QZWDW2445752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ca63c9131f32d9586de23bf39ca9be8b5bb051e295a61cdf34f6ee3eadc5b1a. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:50:17Z), 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/QZN882431824.
Tales of Forgotten Biomes - Extended Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x363da1d5de7b4f0f7ffc6aaf49e3276632421f5db65c995f25d197dab48609f6. 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/QZN882431825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x589532eb6ec6423b94bb855a3cb8aa026a21d694960f0df179cf2561361126ba. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:56:09Z), 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/QZN882431826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1e1c2fbd97530b5fa826c9cde6186c943276e126fa326731a7fda677bea1f49. 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/QZN882431827.