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 0x3dba2feea83d5adad5433a71238c2c78a784329bffe870f90dfb329b9c5c46a1. Chain 2 (Bitcoin): anchored in block 953618 (2026-06-14T09:16:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1cda414f-24aa-4119-89fc-acdf05f71217.json and https://artists.proofprofile.net/proofs/artist/1cda414f-24aa-4119-89fc-acdf05f71217.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 0x9f6ffdeda36014c80f9a765eaf6d8fc4948998dc9eb71bb473bc642bad99ea95. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/QZES92420012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ae3ba9377488b44c25b8ad6d1eeb80dda2eb9ea529994c69aa2b13daa623715. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZES52573197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ba4482f34d5209a72867fbf793f534cccac83f24780e69759e6101d93279fbe. 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/QZDA42585886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d95d12830d7e3a545f0b9f1b5d4e184f68aa4a66ef26a103279b29310d949d2. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:40:27Z), 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/QZK6N2501611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e9b863060f1ce899fde8981973967a522e7e46ebcac306057740db1183cc33b. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:24:18Z), 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/QZK6N2501612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd08ea0fffaf253460141635c4c5c1c44cc4688598c051cfaab2afd9c36f9a45. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:03:39Z), 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/QZK6N2501614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb9af47693cad40a0014baa536e9ff9b307007320c2db72ebe0a41cf6ad3e126. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:12:13Z), 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/QZK6N2501615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69acb9c1f60980104d4366f2eb6b4fb7260fa3bb370d0f472715385c3a1940e3. 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/QZK6N2501617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ba48a5293f651a1de0464e0704e18df0c4e4672c012f4d1755b4903c01b3aef. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/QZK6N2501618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8d966982b45db09db6e42b22e9d37862dac007e5fe388982f56b21d4508643f. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/QZK6N2501619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0a7157c45e2394b050627e9e0cb598d1a5d5c05617ceb6a6c78f0fc162e741b. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:28:35Z), 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/QZK6N2501620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3388fb9e6b7e380ef914c95fcb0d96df589348a4b2441c9bf791cf3480f956a4. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:10:53Z), 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/QZK6N2501621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f9b72ed4cce23aeb397f5a32c709b6479281f281b064ed3a7bc0f0a6be4e399. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:28:14Z), 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/QZK6N2501622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x168c7d5f3d3bfc1f417994de6de5c0180ba5ca90c3b9186b627fd3fc621c10c4. 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/QZK6N2501623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98f10ddf83fe493f7a591f136813166599df1b2b5cd14d3e1fbdd7fa20ec1d02. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:08:41Z), 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/QZK6N2501624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1e7ed9bbcf14502cf92a9adec0c0a566736fbe984a43cf21dc8652974ad003f. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:20:02Z), 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/QZK6N2501625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13259b4c63d14ab575c711568803dce0b6edbda455104bbd04a4252daa541dc7. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:50:04Z), 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/QZTB42534933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c70732aeed60efb718100de67d292b12e0f5f78eb77b4775be389676c27526d. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:42:09Z), 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/QZTB52569401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45eb001d73162ae3c55064150cf2410104bb90591262b8aeaa5ef3d6b98bc80a. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZTBE2574285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x220ef710f0c2a768a0763f1849fa001b01d06352664eb44c7269f7cffcca5555. 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/QZTBE2574286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfddd9ebc7105a746bc41d848060bcd3c12772ecd03fb96dd42b993c9768af2ff. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZZ7S2543125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5830a3cadf1fb17930aaa1e65ce68179ddade28c7ae62ce8f173ee33d40f5a92. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QT3F72568724.