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 0xe197a6f82e2436afe05812ec8456d80289cea7bfeeb8d3a5aacf1fc55aa6129c. 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/06be7ad1-a1b9-4624-b02f-4322fe7d41df.json and https://artists.proofprofile.net/proofs/artist/06be7ad1-a1b9-4624-b02f-4322fe7d41df.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 0x62d9adce23b4bb641cc0b7ea06d715dadb1fb415a93d005ad820854c7fe1a86d. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/QZWFF2426977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d01a3225eb9d49112e8361e7d95a1c72ea0ae72b245b522ef1c2e990545d8f4. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZWFF2426978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x404ae3de03048785b18b9c25131c1f8d51121768f1613d940085ea1c65eff708. 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/QZWFF2426979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ba5e7976501382092ad25b80cc94c72c492edbeb22bf8c5675d0196de788928. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZWFL2467264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cbe72d820df2a5f980d7d24eb795fa83bddcae11dcd20c0df1f39869dc9f981. 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/QZWFL2467265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd09a2f0f1cdad1c042e969214b41931b35c22b39c00d6e24b9420f976571ccfc. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:28:27Z), 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/QZWFL2467266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x409ff368b797011803e61a707b299ce6801bba41e0d87621b90a28849a6fe10d. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:03:14Z), 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/QZWFL2467267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d36324e77d5c5ee3852970184dbe8e67c2acc2d79fd4cfabe69bcf5488c6578. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZWFN2446254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e0e6d10101656dea9ef653ba5e6b0e33f63be0f2d196176a2cc6a7c6b82dec1. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:21:15Z), 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/QZWFN2446255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb14fd4ad58f0de3254063b09273bbdf3224a4f610d8ed9de5d278900dc6fd7b4. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/QZWFN2446256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7daf9d0a79a20ee1da3563160afd4dfddb9eb9b5c62db6d51b4926bf265c7c20. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/QZWFR2404910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x117b150e64f2536e3e7475c21fd32b33e1c7683dd13e39ed5107ad09270a3e24. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:49:36Z), 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/QZWFR2404911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce5559a8a94391c7afcbb64356b2116937a13ad0f6de70c23f899ee8dcf5acdb. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:03:16Z), 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/QZWFR2404912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf5d9f5478aa56b42b0a53e85d8dbce766364e803528cc8306e98b7795eadace. 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/QZWFV2416003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d234692d01f5d9f80ed82441fee5c404df9d001eae3b6784e00a5501405a9af. 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/QZWFV2416004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a14fa449b4160d4366706a7c7f5ec8ac04811411b05df309077ffe8d324dbbb. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZVEM1845304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6f865a20140ee2f4501518ff27d537d74ce94e111ad4d08845da87e7106e40c. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZPEW2563024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f92d59d255ec5dcf7a4994dce14b8fd791f8a5a7a32a1c811e6104394cfa031. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZPEW2563025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8cd33de055da479312c7a3d23ee5043063e3c28f448eb0cbea8648c6ef043ab. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:20:19Z), 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/QZPEW2563026.