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 0x48d7948135cc8fe27234d73d4206185a9ded4e11e2d33b67d3e45fb72266e59b. 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/813c8278-b7a8-4027-93c1-e39f6df9253f.json and https://artists.proofprofile.net/proofs/artist/813c8278-b7a8-4027-93c1-e39f6df9253f.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 0x5958d3c9c83e6c5fcaa2f72757bf032edf4b3bd79412816f2c08718b501ee0c2. 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/QZX882504332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2efd3dcdc635b3352c259a03fafb73f6e773b624ed2a995288ef31a610236e6. 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/QZX882504333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc59233187a8b45232abe1cbcb941b0177bd2eb8b0cb825fe864b5a829fbc564c. 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/QZX882504334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3abd27462c4542108f639fe0f369ac4b34faf5ae51fe2ce465c51ebba3231de0. 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/QZX882504335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e8bcde3474464fecc3dcb341ec6a7584a05e2105ce3f0e1892721044efe269a. 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/QZX882504336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ea5bfd8eb2fe8efae201e50374b7677bc90586b71033a34352b4e966a349af2. 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/QZX882504337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5f07f64a514944b536a92d95c319ae84088898c0a30e62918a76491b68bf173. 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/QZX882504338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa06a04052f0c91344faaf36ef701d03f244dc02f6bc381b69ddf249bcfbb490. 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/QZX882407309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37e7dd75223dbfb15fcc68b435fd0ebd6ae49ee2df72304093419e6f85cdd79b. 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/QZX882407310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05924a4775aa42a1116e4864a5afbde4f3f2f640fe0177789e3cec6d3986e174. 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/QZX882407311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc56c83d31fbdbc2100e3669e3599eb5b2c8e953911c843b40eaa484d00b82183. 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/QZX882407312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x159e0c666033973943d7944ef49b1760be9fe0366132a2d8b14505523c3c5567. 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/QZX882407313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42dabf9cf5bbd70dd6109fd9a2f075ee35558850a8eab28a74ad1e7ec1e5cb7f. 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/QZX882407314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c1bac991fc5273d175ca244c29aae4d86c95e50822ebc1e391f4c18b2fe30df. 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/QZX882407315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd51350d836de7eae2ba8872a5d4a0d4475d5b5dc7e0025a609d3b301efc2e86f. 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/QZX882407316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fdd46e9f265353fe7c92648a5de7a35d65fbcd5c9c4f1ea5f46d4b626fc3083. 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/QZX882407317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ddaca4270ae98362956b6c513b2371d07f2351434fb329881a036f100217491. 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/QZX882407318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59773797af11a2b645a2beeba25bdb6ed3cdfde927425d9ad5f48597890240db. 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/QZNWR2256654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb97fbe05338776c811ea2c71b3a82cd39c2c1a3f086e403afd447a91624a4696. 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/QZNWR2259016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b2542013e637246cb110a86d7678721beacaf5e1f22b89e1c6215150f7873e6. 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/QZK6P2232994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b3537d8146b32a77bfcb57bdbbfdeb86bc726181a83a314f38bdb3739d3c181. 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/QZK6P2231685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d30ab02aac1c123d322f9ff602d41ffb4cb10d7276d005312085e0cd9ce06e4. 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/QZK6P2231689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90e8a9e1a8ae7d0f6c042c7a4ff4dfc3612bdeb611b041a431fff5e7429a0d93. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZK6P2231690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b790ae8946b3c956e37e878db31d77f4d0173f05164646d0dfa485c10f13e9e. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZK6P2231684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x846d6c187fc044c5f9c693a4891a8537f460c8517398576093be39d6143829b2. 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/QZK6P2232999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37b6716f7b774d8f9b82dd6c9b5ab94468c4cfb41bb3ff13b4259601f247a876. 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/QZK6P2231750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d66978a7197c528752b6a42d6d88944966cf738e7e663c95cdf63e50d0a4b3a. 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/QZK6P2231752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8dd4b6f878f4d595f089b5c502f5be1645ddddff4f899a8fde9cd6f3f48a5f4. 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/QZK6P2251473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe0b65fbe7db4102982ddfd2e1faf77a6dc9212a3603fd39b5f7a9cb7c85971f. 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/QZFZ62219531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6553f9a2773369ed9e20c35eb1f9b3580f07136562161a5a18854ece1d06a6df. 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/QZFZ62214598.