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 0xdac98a2b53d7de4504c2db621975cff55d1caf80cf7a2de04c00c940b3094fff. 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/b6de51de-68aa-4428-b593-f19d0f65269e.json and https://artists.proofprofile.net/proofs/artist/b6de51de-68aa-4428-b593-f19d0f65269e.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 0xe17fc80df6e283e4f64bd2b1b04560eaf4e9b5f4c0493d0604560cec6c20d502. 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/JPU902102014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x979feccd6cbcdbee3739d1377ec2bb818c43699755b69ce7bed190577cfd4690. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPU901702232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cd4e2bd016c4992dada6cccb6448772a23c4d840a8399fba44fb3c6dfe045e6. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/JPU901900246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb946203ff22e8092c4a73877add12eb68f38681b31d824ef390e03680d696f9. 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/JPU902205149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d5b9527d3c524ebeeff75181e03fd4938f54844ba62d9923e4b228650a3d87a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPU902300662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb946203ff22e8092c4a73877add12eb68f38681b31d824ef390e03680d696f9. 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/JPU902205149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab27c50c3bfd04a3e9d3a2a9f3b22f158345763a99b05549bed51ae4e0c7c822. 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/JPU902300265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07b56a6d4f2297b77033b4f87831978571ea6fa7e0d8a563ecb39141798ddcf8. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPU902202770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7330b28fe7f6491fc9417613a9d51b8809326ee80b5a82a79d677752f1f21ba. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/JPU902201929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2e2b3ec16d00e726a407e271b746a41451af6c00f1cb7adb0d88673287ce79e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPU902201930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe17fc80df6e283e4f64bd2b1b04560eaf4e9b5f4c0493d0604560cec6c20d502. 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/JPU902102014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c05224e974fb41ce9f36fd9666f4794cf024091b7fbc7b22a54d963c2cf827f. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/JPU902001177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa2d02ed472e9b11c30c56e2cf00b0e18accc920f4e85e65f45b3bc45f257e7e. 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/JPPO02201024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76bb8959c95876b3087d940b093ad0aa42c0afe27c2ddc574cc639aef28317ca. 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/JPZ922202419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3a1e7658c48c83dcdd55550f9aa7556e0fee626f79270afd2dc5e2e24434487. 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/JPZ922202420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ea0eac02888ad769023c9c1e1b320f0a46b279d489e597da31e6ac7ad77c44b. 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/JPZ922202422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb706cdd1154120fe52f52fd9a283fac6dfc68ac3470f822c31e685eafcdeef26. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/JPZ922202423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8b76ddcd447c539eb73f9031cb9f0f86652eaab85cee00002c383974650df0e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/JPZ922202424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e0cc32831fcfcc68de74800adc5b9a2a74897326d2511c8438ba549645224d3. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/JPZ922202426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4bac4b47e2a853df44050375b1d5e875de43cc639596643bdd1605ef4ac6090. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/JPZ922202427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8f1104a76af59d640909060602859f789f3eca97052bf3f7b554216cb7f5695. 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/JPZ922202428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8e6d80981248b7c7fcf5094578a4cf8a911507feacb69aef5493b43daed54d5. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/JPZ922202429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6be687c31a4c9a035e36660641fbd696a767ff9b8745a9fc9ad34ab1140fbc6. 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/JPZ922202430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3a1e7658c48c83dcdd55550f9aa7556e0fee626f79270afd2dc5e2e24434487. 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/JPZ922202420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f5fa3bf340cebcd9fb8e27dfa8922651267789dcba036afe865cf47959120e1. 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/JPPO02201806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x587f6e10c56a13cc325d29e1f89c25adb9ff7ccfb06d1f60cb5698881b478d18. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPTO01201944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc86c9ca9273270bd56570646be3c19167d5de90f40e2ead90ed9eb96ebe81f04. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPPO02001701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf36a88aac0ff8474ac509a90dcf3af6f48d5f559777f5482cae35a68b3074c70. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPPO02202252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2deb5504394b5f16a3083e302d07d13f4b283dc5739b9e8b51681db7a4635393. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPPO01705097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bea8b19b76ed19d6c458462781d9ef3a32a7bb402e7340087c33f576fc7af03. 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/TCJPH2548650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d2c1b8af5abf6b836c25d8ed57c7acda94c2a177d3b6706759c39d927d091b7. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/TCJPE2543800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fc4337d0b5e008ed9efd8eb075089b58baea6f94f543595b4ff49424926abff. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TCJPD2560277.