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 0x334fa3c87d056050ff9d067428ce3543d3f7e9410396d636ed897c2bcf4c3bf8. 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/54a07dcf-ee68-4dfc-bc5b-5b0d7492b5f1.json and https://artists.proofprofile.net/proofs/artist/54a07dcf-ee68-4dfc-bc5b-5b0d7492b5f1.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 0x80a225dbd3faaf35c3478439769030e455c6bcadd5ee4579072c406608e43d8e. 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/QZHN72282475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a326c7eb7953d6cfe45577ad5b1b197d50a113707df2834d0794898f6b6a440. 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/QZHN72282476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x436f0f69366ca90a65cb17f8cdb4eea89e9b5a73eebf54d76f7c8376cb433942. 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/QZNWS2120017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50c4f569aa1fb982409f1483de93828959fb016481914cb3d492294f6685ff0c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZNWZ2155178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdb5549c5209ab213f52cbf4cd9cefba9071bea6ea64d9efea49aacc8fccf7f1. 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/QZES52298796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ec172baed9ba79e9e13020783af8f2b548efe495e38e80b2dd1aa964b525afb. 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/QZHN72282477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x099eda8ba6820cad2670d6613e6645cff13862f259ed0d336277482ffb502b9a. 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/QZHNA2200738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf489035884d45e4704bd96bb9a9d57cc911c97f4814041a3f6d82bbabca1afe2. 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/QZHNB1959856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2916497dca48945f72b258527eb5e2d1a24519cf67cd5b448bd076e0bfb71e7. 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/QZHNB1959858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9f3bdc1cc7fd1692bb815cb88360adad0efc1b4e37d7d6bfa329b03b983bd83. 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/QZNWV2306457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4f7004e2381e9190723bc81e05eaa6d459b2f40be9e739e4d239ac9168e6dd7. 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/QZNWV2306458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab37346ee7e7a997c9b88ff13fabe449ac3d1c3fde3d9e446ee019c5a3da3d3f. 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/QZMEN2300463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x313a81b834cd74a71ca9318e5985ad4f36d1e3162222bc08ce71236a19cf3084. 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/QZNWV2306459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92569d6b91d591ed0bc235aeef704435c7ade4b202a94fac19839904901d280f. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZTB32273660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc76593e9336d0650059a9d17fdd102b988a01862c2a4b27d379e436f1649a6bc. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZHN42326014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab37346ee7e7a997c9b88ff13fabe449ac3d1c3fde3d9e446ee019c5a3da3d3f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZMEN2300463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8da19a7b74f4849168fa6f64c85027a7665882c792d833d378dbe257d12f0930. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZHN42326013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc76593e9336d0650059a9d17fdd102b988a01862c2a4b27d379e436f1649a6bc. 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/QZHN42326014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79896b53faf0276960738879914b50b69a5683059f391d57360f3050af7f94cf. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZFYX2315309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79896b53faf0276960738879914b50b69a5683059f391d57360f3050af7f94cf. 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/QZFYX2315309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92569d6b91d591ed0bc235aeef704435c7ade4b202a94fac19839904901d280f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZTB32273660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6ce8d568aedc8c46d36e6568e11cba9440b2dbbdc78f7c6d4bf9f97ba0ebda6. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZTAZ2250834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1809df0741dd491b47b902f2b51a4416f5596e685cbbd3f01d3daf5750f8bcac. 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/CA5KR2273264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdb5549c5209ab213f52cbf4cd9cefba9071bea6ea64d9efea49aacc8fccf7f1. 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/QZES52298796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50c4f569aa1fb982409f1483de93828959fb016481914cb3d492294f6685ff0c. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/QZNWZ2155178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x436f0f69366ca90a65cb17f8cdb4eea89e9b5a73eebf54d76f7c8376cb433942. 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/QZNWS2120017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x383d53b42a71d090b01552d1d50d71248ca63ddf9ce8c7f594da27713534ddac. 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/QZK6P2089550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x455ca3e3b570f6f842c24bbaca712260e1268acee5958a4f41627fd468c00b0b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZHN42053036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a2f43d7e4f66f5c224ef6df8e72eb4303fc2f2626981a5213b162dc080972e8. 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/QZES52054895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8c34e91afd5b58b292183d10f63d99cfdeb52435500d152067142d030fe8c25. 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/QZFZ71944086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4410c45f2d774f02df4c8a3a89459b25b3a0f726c0303b83c495e6612a2f4a7. 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/QZFYY1946092.