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 0x933238376b2b4976e91599601fef101caa757594e31db54d059fe57a9fb4353a. 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/8726bbb9-e08b-47e1-9c07-990456502a02.json and https://artists.proofprofile.net/proofs/artist/8726bbb9-e08b-47e1-9c07-990456502a02.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 0x8f1400f068c4aa9353db0c6b22c354003eab68a47f6877f62f8929be23c69ddb. 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/GBMJG1607489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e4a879cbc0098bb129031fa3b507e36ca430af19319bcb19e4b920ef063a61d. 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/GBMJG1607490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07c3f6f6a0b9139441f727102daac1812661b618b1e2dc7dd60b7f50c45d5bc8. 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/GBMJG1607491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb82d8970f04477639cc16569335cc6dd195a81dba205275e6f28ac8618b75c0. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T14:08:44Z), 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/GBMJG1607497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e279c1cb2f402b2d3d516f3a05c60585a21f17bfa22fc7bcb2c36672f067bbd. 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/GBMJG1614378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2222e37e4370ffea08b8a6c72f1671bc04c4de7e7e6621176c0a36140a6f612. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/GBMJG1614379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdc1f48f59e3384accaa51cdf53b28f93296a967389c7b8dca0b577c3be349e9. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:43:10Z), 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/GBMJG1614382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64018557d85ae0410f1049602fac89f80c3049de9198e078f8713423176d8f4f. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/GBMJG1614383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cafbdd456e988a823c8c59a2870345b08d9adc467a1059e0f2bbad3f1e3b53c. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T16:03:10Z), 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/GBMJG1705473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2897466dfaea8e85203a3bf02ee343da919f855ce9dad0f0e8d450414541b94b. 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/GBMJG1713479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81c293986ca743d493057d4b65465567d4297ee2b964ff9f14297c367a1d828f. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:51:19Z), 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/GBMJG1713481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dd8046c24f2b2fdcf7487a4596c09b45cde938ee18d6f14f8d3dcb0a74e62e4. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/GBMJG1713483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44088ce112859ca460aa29d4a381ceaa90bd17ef9c3221ba031c4601fedda2da. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/GBMJG1713486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2579437d326d4dc0b60092744b1abc6ba8e7d06c07a00b96ccf0e0ac23d4b95. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/GBMJG1713490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde3129613627641a55eebaa5af156b6572b62ce77c07a0382c4d2bd4494f982c. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:25:07Z), 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/GBMJG1715025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe9d5ca0e585b9698cf3ed038cab9662bd4d57b443103992e7848130b1349ada. Chain 2 (Bitcoin): anchored in block 957642 (2026-07-12T02:46:48Z), 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/GBMJG1715027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b96e72495dfd0ea2462b0444b6b5b85935f66a076dc0d42cb2c21226e264171. 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/GBMJG1715034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc171fda8ceb83de3e22304b077af89d6927365b87e68264948f220143ff0cf6. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:01:12Z), 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/GBMJG1801741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ed7daea92fc636706fcf1c7d7d964a19d2123c4a516ab2795211199c12ab461. 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/GBMJG1814909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11d7531f31ef17980674379c6bf71d55ca841302220cdc85f56917dff4b7b1c4. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/GBMJG1814911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45b4437e1d705dcfad8c345f5bb9a9d858679f86e56f1475c80e9190a13ce85c. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/GBMJG1814920.