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 0xd78f088afffa0b88c60ea69126b19276a0e2c7e7cd001ea32358ca38e22116aa. 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/a783db58-e094-4ab0-8303-21c5158ec22e.json and https://artists.proofprofile.net/proofs/artist/a783db58-e094-4ab0-8303-21c5158ec22e.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 0xc257024d1b33714ab5c49a176c0485f2faaa2248524ea4cd8bb6b576c65bade4. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/BRUMO1100016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x786156355ed6cbc4c88e8abc40a101dc0c1e94d7e9ee8b11aac4c1e8b1f3527a. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/BRUMO1100031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c82d0e6b0293c7cc27b3d00c2f5dd23fc820f4a2f73c977c2b090528875ed01. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:00:12Z), 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/BRUMO1100018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7fc45cbcc0ed632b116c12826a8508ee0804250ebdb2b6b1328db9ba6cd2ff9. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:10:54Z), 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/BRUMO1100022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7572f15f1a4c18c4d3472e9ae604e809aa4424aec50e878102dba97e4dab6238. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/BRUMO1100023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7579befb1d6211ea87f45f25ad95f8794694a8f24ddea134f71508351a346d1d. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T21:05:17Z), 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/BRUMO1100029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf654c38efc05e72eab8dd5cae00d2d0ee494f9e36beaa60536dd840a9e8e240. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/QZHN91966060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x072897fcc2f46bb1e7c7bb1a23f8529d33c0e8ae4f16ee4c2611781d591cbd87. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:21:17Z), 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/QZHN91966061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d51aeb03adb756a84c0a06d6ec54c92e3b6e28caa168bfcdbe8bec0fb7a4f50. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/QZHN91966063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1a3084cc12d79c5128227fdde5722df1cfa5a007b379cdba634a237d85d9a1b. Chain 2 (Bitcoin): anchored in block 958625 (2026-07-18T23:11:57Z), 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/QZHN91966064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeed9a5de9ba5a14b39f789fcce2782046c1772db4741b6e8cbc27159442c9d8. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/QZHN91966066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c85a0c112d6f15b8832479b0dfedb545d451d54adf37c054b0425ffe668bbc7. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:55:19Z), 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/QZHN91966068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1b25b5332ca7bce3bafa3ba72a6e26c80e9a13377ecc019cf9dd7a08a83671c. 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/QZHN91966069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf6680dbe0b054416e6ac3742ad30b2a4365ebf1310d6ec6b37315e45f37da5c. 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/BXAFU2000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc37df713cd163295dc0ee45c9a96f20d43ceb60b2d1d84439959e17216d2822b. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:28:53Z), 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/BXAFU2100022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b6ddce4c61f8b984e40cb03f23ac64dea8b53e46ec2002caed0ed68d468c933. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZMEN2175710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x839aa6eac45bf748df179b80a369ca5bf381ba9073aea4d67dddadb3f5709673. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T23:06:15Z), 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/BR9CF2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb6f96caac7fe33998dd51ddbcd610b9408894387baf442897567a84c32062ef. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:53:04Z), 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/BR9CF2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e55fe2589e18c60831a9495a9b6a0fa4647fe6cdc6efd7fcc808ad48c00fbf2. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:18:41Z), 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/BR9CF2200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fbda925e42f4a3e0a8eed7f2228d178a8b00428b1375bf215d0d5426d1b900b. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/BR9CF2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07f9b0b42cb9d875d7b1189015c6afdb08398c93daf29c8b7b5b6f2417a28ed6. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T16:26:58Z), 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/BR9CF2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a759f4859eb636e88e15e46c26e9fbee277c01d46cb48816938b61b08d9457b. 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/BR9CF2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc230585e5d8b4a23faf4642a9a12af6e7614288bf3de1a2ef48bc03b67e17bb3. 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/BR9CF2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09783a7e3b13ec3dca539c5867331b20b22a0246f9840a023752768578eb5f1d. 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/BR9CF2300010.