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 0xecac1b73a61287beb5109adbc4f71ee603b753ad83909a2c831b9a0684c196a6. 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/6f0f8c95-04f6-4d70-ad83-73f1404e3935.json and https://artists.proofprofile.net/proofs/artist/6f0f8c95-04f6-4d70-ad83-73f1404e3935.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 0x7299e5e76211d8b4675b95b06f41f659a5752671c30ba01a4cea518cb384ed3a. 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/DEQ022273680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x340a4b29db06edcc9ed9adaaa13af679fce9a2967fd88242faaa9b72832a395e. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/DEQ022284588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51aa756c354a5430baaf8396690cf7c56e8282bbf1035b4d94a08a4274610052. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/DEQ022284587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e2dd9421198524d2e457075ca7785bc9ad5b4183c08adf551e0c464d3766e5e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEQ022284591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8abd2506384949c192654ca73f19ef731c9860ce558f01682a7554fff0da462. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEQ022284592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97d36b523bf857145dcba7d9472ee6cbc3197c2a42b8045e8c0cbf198d794bd4. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/DEQ022284593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x337afae6c8eee65fca749a736195c6d36ffe8464ce227388e245260392e32428. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEQ022284595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48ed8691c49beb0c09a4f3c6235f67727139f40df10428ecf4b94274a34088ca. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T02:05:16Z), 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/DEQ022284597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee689eed0370df2bafe0991f3fcc189cd82e7bf6dfb8cf3d0e758cc0db29eb0f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEQ022372685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82540276ef3d8ebd9aec868f78b4c09a7de9b2336d2f5c0f52e66f8dc278114e. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QM6N22409343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb99bf82e3a14abcb485a4c14dd6df5744a7c5c20cfc8d9a87df77ce7ee351b2. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QMBZ92468181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e155d435817471141644977b9dc6c8106637f6de0f7a7f663efd883c771d016. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QMFMG2302073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfae2aed53934b6865ab52c0f5e7803d9b68c55ff3acb64b56c4316c48ed66963. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QMFMG2302109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82540276ef3d8ebd9aec868f78b4c09a7de9b2336d2f5c0f52e66f8dc278114e. 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/QM6N22409343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9534eaf90c0a34b63a0bd84ec28926fc107228d278ba1b8531127f957381f1e4. 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/QMBZ92471380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19c5d38ac78e68d0c730d3ff051848388e9abd7747ccdbedc230aadcd692488d. 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/QMFMG2302101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2e5ae0702275bb0499e585349f61651ffb8e51ae18a57182b66dbc66196050b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QMFMG2302212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d1edaf89fc41ae04a2f8ed1828e91933e50fe6e02e87c5d3aa448ce6d302ed1. 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/QM6N22470255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb99bf82e3a14abcb485a4c14dd6df5744a7c5c20cfc8d9a87df77ce7ee351b2. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QMBZ92468181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd20674fee4b0922f71ac747fee62ce21342a5891e0a0335a5ad529fa6ed1034. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:48:03Z), 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/QMBZ92471377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64450114fae6d28eadc89e144f275362a56d628aafa65999b952f8e972905386. 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/CH7812422129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2efa2c11e2e8dea99390dc9b13990b307a23cbb319bf42a5e43faccaa1a6c2a. 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/CH7812532925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dc62d00dac3c81e2ad553fd412da5101105f40c9562335241e92d30f1c4e4c6. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEUM72405965.