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 0x8226d4fa362e3a2769eae61ea53177747bd5f4fe224d8fb611a9221c4f6f6bb2. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/21e1d8af-ff43-479c-8bac-2fe778d9c437.json and https://artists.proofprofile.net/proofs/artist/21e1d8af-ff43-479c-8bac-2fe778d9c437.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 0x55c01db4f51abf6fa2194a2fc4df73418cb1c7b38811400d823a42f61632012d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:53:46Z), 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/QZDA82206554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4043e32cb7708dc97bcb9c3b42bb7362823cb3a49e57f7a6004fb50b2046f6e7. 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/QZDA82206557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc822cc228aee5561195777ae76896ad10819df7803b0c0f326cb90ee9a39834. 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/QZDA82206559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cf66d76569bc7af89e04f9a6832ebbedecdc9fcadbef6add17273ed46547149. 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/QZDA82206561.
you do not recognize the bodies in the water
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb63b3a402fac7b37af0b3a90a61a401324f4743f2fb0fd595c38aa6655882a4b. 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/QZDA82206562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bbf5ae4671a1d94a4c1ddd6e1d92408b272d114a8465541275e8f25fe512f12. 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/QZDA82206565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd491b26a87d114ac6c22d5e156c7d52a87feda9b3263d4bd38e5c71983d41ac1. 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/QZDA82206572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8eadcdc4de4fd60af49e55194892683a84cbf7e2d061b22c0a2ba946279396c. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/QZDA82206553.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfde7a24cb503781e18902441bc18e272f66d1cf1d946ce00535b9ac788851355. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/QZDA82206555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x360abe89969800f8276de58f9b27efd36b10240547f2fe1c187237162a0f0336. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/QZDA72279990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f31ad1b4c1e69c53c79c70c53eaf03054522161c7ec07399320bec612438c4c. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QZDA82206556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f33609411cd163867251305165997a30e9afaa42217099dba677d9a3a5e164d. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/QZDA82206558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07c27875a6d4666ab966a066f4a5f3f80d7ed1601674122e19af0147925369a7. Chain 2 (Bitcoin): anchored in block 960383 (2026-07-31T09:50:37Z), 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/QZDA82206560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1500e30fe4a590e1ab56459eada7e7edd84b3a3f63c31727e674e0fb57dd72d3. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QZDA72279989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdf146e553072d4e070eef865db3bfdec57ac18274c24944a20ca978d12aa7af. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/QZDA82206564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84ceb70da6f5181bd07a590b8d5dfa318626ab03cffa3ed02ec6d779f25f1773. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QZDA82206566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x880200c576f1acaa5488f4ac47eb8141f541b2871149367042e9a0237ca4aab6. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/QZDA82206568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72b7364e080192e9697654d0f5951bc9ccc63403f252534d5736c3148110f3b2. Chain 2 (Bitcoin): anchored in block 960456 (2026-07-31T19:53:57Z), 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/QZDA82206570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16460be478674381c3dbd0ea98131e46b975d33b57e43e09a01925ac878bf1fb. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/QZHN82306964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bcf2abf307292caf6127556fa24991305d6ed735d284816121d03a8d39e6794. 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/QZHN82306966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dd006fb8b6d989b9a9625dc017b395410e5e8071466d845a3882c8d902202ef. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/QZHN82306965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddaa54311ec6175af1b272ec1a11dbc78d3f1108ee0abfd5bc18071f83d838e4. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/QZHN82306967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30c20c91f73189138cb6e4246e1a6f398f5671bf3e47c9fb7b43e9420e7c1b74. 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/QZK6Q2161425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39d7d89f79036f6da09d3fe838cf11177ba0c8bd5336c2c733e4c17d29666931. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:36:04Z), 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/QZK6Q2161427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bea8bc94a1aa8c8f66d3bdea0efc3067220140c34d92ba7334fa452aaac5be5. 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/QZK6Q2161429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75ffbf21eaa510a5ccdc76d0e4dbaa9313f122a117d3654f9b4f5dce34cdd133. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QZK6Q2161424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2994751d66c7f5972b79f85c8e065a694a617fb0d7131d60d92085b8c7c03736. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/QZK6Q2161428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4720b47908c020159359c0e04aca843195133f3ec1a55f563358e4507396adcd. 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/QZVEM2371608.