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 0xe4a9aeca2baa1e40eb3fb15ea7795ae0b30c2f75a1d82537e2d78b00fb4d9fe8. 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/70bc0dfa-157e-4801-9e21-57773da0b555.json and https://artists.proofprofile.net/proofs/artist/70bc0dfa-157e-4801-9e21-57773da0b555.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 0x578f72ebbf31dbf12cc4bbe91cf2db4f7b785d2fdce0359aa1aa26ce14edce1f. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/USFW40671506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaa10d19b10cfae148212382a284df765eb7ee7230dd4d7ae2195a4637571dfe. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:51:05Z), 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/USFW40671507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e6f36ed3a01892c881e226409e31c409c1c78735d02615c45b8a8a09bbce014. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/USFW40671508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9718664a977dca9ddd3af0f3dda50ed2961bee3c20a4fa20af8f2a3cfb4f23e4. 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/USFW40671509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44f3f5dfd00c7b940a2539e29b06c74439a539f0988265ee37f394bd72e292c1. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/USFW40671510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc85559afe660920c222a065229f70d6a4f5c74a55e62ea774b2d5c422bfad052. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/USFW40872702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x507efd241ca831d65b0d2083d197c5272915dcc9c0f9f57ac2ed78e91c9e1af8. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/USFW40872703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a50f3fe618b1d6d4545c5e2c1c091d6048da50b035955c52fb012bdec51135b. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/USFW40872705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49a1076288086974a305d7f8d5166ff19cadc12f8377a5c814d02b1f9f3635fe. 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/USFW40974901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0844b2bf86b18e5c43909c34b62889434c03687f1595f9c51ff4d482c8c5566a. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/USFW40974902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x445a26bf1e3e4cea333257976868748ced78b55974977d54f4ac86f32749c0d3. 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/USFW40974903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eb465db33b8ae90aedc848db0bcfb3c45df4a1b92cd9317d95ac36cc082ac7a. Chain 2 (Bitcoin): anchored in block 957681 (2026-07-12T09:09:02Z), 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/USFW40974904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5de39b3528929931982f38ba3d478e8bef5a559faa0e7d490c1d46f729217685. 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/USFW40974905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96181565c5fb23642c5e4650f8401746ad8933a4c17ed7339c0718e41399c93d. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/USFW40974907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d67d58da5a141112ec183e84c4628488dc1f692a53a4821bee925167e4705be. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/USFW40974910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8144a48294c3283ed76ed8cdf1058df5f41ea3024a1f42c6e46c7c2a456a05c1. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:51:52Z), 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/USFW41177407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb18da72440c7f99e89a2b841b4ec63b8ccafeab74c4967c31f61882352ea5518. Chain 2 (Bitcoin): anchored in block 957671 (2026-07-12T07:35:31Z), 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/US92U1800074.