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 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 0x956b7ed5bdd4ceb2f411e67bafe18a2ea12573dfee94830c5bba54f0366d7617. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a5d7fb70-08b9-446e-80f3-02e312c6b157.json and https://artists.proofprofile.net/proofs/artist/a5d7fb70-08b9-446e-80f3-02e312c6b157.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 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 0x1f336fe8b163d762539fd4da4a577b6a34b88b1c1d522693e7cb0cfe3eea9b6c. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/QZTB42217758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x856071c170a10424b2b57217ef18438c1063d1c94405afab5c0441df2ce57ea9. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/QZHNB2336133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9cc74c0e19100692119f4e5e913e5303f6f4baa311c44dd8bac48df0691575d. 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/QZK6N2329188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc575e2af479a53577161385ed59b33f8ce1cbc6e1f34ff320314da70caab4ded. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), 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/QZMER2360410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x642d4555adfcfbdc77b4ac8456051dc8ebae01182a87d19b259535e6cbe15584. 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/QZNWV2351629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacb0b2ad1968ca55fecfbd9e71452b755fba12bcb39def1720eafa83933d0a3a. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/QZTAS2330293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e2606fc5c419571a4ea15dff3c680ecf99d7aa5531d97b5467410788c021097. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/QZTAW2334132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf22a487952576aa1e854b6dd30f917c44e00a7f5c35e3bd6e348e38a12bb188. 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/QZTB82387045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0764b3661c6cb75c469f51a65e4c72d23793301c1f5c3619d11e54cb17b4e270. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/QZWFG2327541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36c39218a35f299f570b80ac8317bfde256a5f97db4e365801efdc049864e613. 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/QZWFQ2320342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc95deef3c0462ad0ecea4f129aef84eafe0774ecfcfcf56e00317ad78becf134. 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/QZFZ32421390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x187a3286ee30e78a86aa201fc439452e915381425c7a18560688781ffd9849cb. Chain 2 (Bitcoin): anchored in block 960210 (2026-07-30T05:21:45Z), 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/QZES72443557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4b56f80c9601d97edd529f7fc0e69a4a8795eb50328b0b196b6208c04fd5a20. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZHN52454121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa97e7f2000ca91d924a3ea80f3a0e2d92811101f4f58e3760aa590e427f96e87. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/QZK6K2488801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x642d3a3d5f6c0794dd42435d154ec508cafc1f99b660ece33e5ec9aad496aacb. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/QZMEN2412473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b0d3c677a2973fbf15478b4be530ba8093c551e4905788fc5836d0c9e387ba7. Chain 2 (Bitcoin): anchored in block 960101 (2026-07-29T11:46:30Z), 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/QZMEQ2464905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ed16501efcc4555948a953e4e246ec39d5deaadfb61565a40571bbe580934d1. 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/QZNWV2413270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19823507393e2da8502d2b5c5135dc4defa02b36991de85aa1dfecd62c7b7384. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/QZTAX2496052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3b85be047e4da93b89cf68aaac0f1d91af04e0d09cdb7321657e1bb0ca0f8b2. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/QZWFG2498753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9a6957f6de5868b64fe4e6dcda08216529ea4bc5a8e7d3049a58fd3985df34d. 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/QZWFM2425092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4f66710f552cb43ef5f59b962f51db7dafe906b84cabc6a1985b2b218f30985. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/QZWFQ2494704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa607f36bdd587f4805818aac4fbc34f2e3c49be7955c1848f717f5c384f50bc1. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/QZZ7L2421722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16070fdf6ee220442c1ff32edafe76c0a9e7e7bf297c75f3db843043f95faa93. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZZ7P2447972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc5250238976c4567126b8c7970ae9af794f36cc0b9fd530192d7c1827489b00. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/QZZ7R2415905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33012ebab5fd1a9083dddc049a984d3c47270b607831ed12dab916474118f212. 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/QZFZ22504088.
don't give me that look, i cannot take it
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce186b0d368ab9c78fe5a888cd96d1e95a963ba35d147a8fd6bdd6a16e814d8e. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QZFYZ2533831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98bf5c3cd249929dd8511c8454e29902d665463234c36335b32e9f2167c3f4eb. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/QZDA72525731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b2846bb34aa695c9c5935c0b14abdf1e565c72dd087af2a3efb9ce81cb40a67. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZK6P2541990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fe85ed089b4b7bc7c6d270ed96160924fc3014f94e28f300d8ff2ca0be74929. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZK6P2541991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa752bad8fa31d2c637185f758b4d15b8023a5935ed45baafd431ddf233d4489a. 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/QZK6P2541993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93c5dbed613a84c57b8ae93ab6629a22bef05f5fdd178dd74f35d3335c1f3c3e. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZK6P2541994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2341459c5b5a1e78f735967e7ac648e6388101186760d5734f641ed0cfd81ee5. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZK6P2541995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83df604dc6474ea35d921567057949da7e0fdc61a33abb6210e57a9bf3760adf. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZK6P2541996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadfea00e35b3103b83eeea5b334ecbef64a4d181c39d7e81b3c7ce79c931b896. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZK6P2541997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4592b8b2ff644536d1c71d1713a8d527f70830f5c5f9bcde6010a52222692ea. 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/QZK6P2541998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25ef37c80a66bf6c1c62a592d35122b635b3f15072d60ee8bd77a1da61a067a5. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZK6P2541999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf199f5064bd90caa6045c61fbb348f43372aa35af12fca062890c70a3e4731d. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/QZK6P2542000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8de27ace53698f35fa521ba3dc4bef15d14bdb0a2c686503eb949298701c94f6. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/QZK6P2542001.