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 0x6b0bc8d5936d4900a3ea924dd469bc70549d83174fb070adc17e1aeac271c898. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c3527221-714b-4058-8aac-f42ad984dc32.json and https://artists.proofprofile.net/proofs/artist/c3527221-714b-4058-8aac-f42ad984dc32.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 0xf51d8b5cf469d74589d3894b4d857f4797cd8ae9f93b0bad87fe9ce307f884e1. Chain 2 (Bitcoin): anchored in block 959091 (2026-07-22T04:56:10Z), 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/USCGH1891812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4af7666eccadbe126745e22b391f67346bfa1dad243cc9dc8e022e687c281a52. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USCGH1891814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8adb81ed4c6dccd52a46905fcc9dc5c70294d9e3904d77879af4a19887dbc56. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:37:41Z), 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/USCGH1891816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09c9c09ead7ff41f38e78a87edb9052cde710be1b614b1e090ead6022a42e01e. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/USL4Q2326217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7da663c9951e49b267d10cfc5ef9b693647b58f3bd0102fa7eed8a101b20cb6. 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/USL4Q2326219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87b6ccb53e5168f084ba257efa09cb6a2965a17168377173f69e5698d7717841. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USL4Q2326220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x966abc817cc2ede77d3b2736d82f5461be8140f3da98abf608963f2dedd89af4. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/USL4Q2326221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe79c0b3e5498eb039a97b9c33a3c48575c69dc2c597241e77d9c7b2b2b8c0f00. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:28:11Z), 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/USL4Q2326222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80487c803d8644e50b12b994360c827c24496ae1c9d95734d62d04f26ab0f62a. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USL4Q2326224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8adc645245d6f41632756c49f20d8e59d5ba4b22def2af54e6fca81fa93acab3. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/USDY42414052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33b712b5020c200ce46729ba0b1af9bedd59b60668a6cdad95044fa400c0cd67. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/USCGH2526416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53c4400262a82a49c594e3f16762fcd07936511b4eaaf0e853d5c51458fe2e7b. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T23:56:07Z), 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/USCGH2526417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf405273dfdde5230d033b6564928bb83b42b7b0a743fb28ed19560fd570978d7. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/USCGH2526418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe49b29f1b676e0047adb2f7515d4aa453889f977552d1d33c463278cc072b511. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:56:53Z), 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/USY242473444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x276eceb944e793edec10745f4ecbaf22955ed67952dc0e09422d95961da86d58. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/USCGH2526420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74cb81e26072c687bd1587bd508c3f291a00aefe4a245737c6732d548d409b5d. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T19:05:13Z), 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/USCGH2526421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c8836828d44da9e49d97e48b9bde809fdb90db369020d8783d10a61b4379116. 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/USCGH2526422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd4dad615c8d3adc1f8d381ea27bd57f7c8639da14b587999be1fe34fb175eba. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/USCGH2526423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50612bab1047de6b2dd5782639250013464f24b270f52ab2463547aa62bcacaa. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/USCGH2526424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13585f53ad7c5a5a6af42b4f8bf8107574293b77b9064987adbb2dd5352c3ab5. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:49:49Z), 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/USCGH2526419.