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 0xfb23ee5b5e816eb2e6377a3c1e0c96696c9c9c97e0bffe44c43bcf6ead16de35. Chain 2 (Bitcoin): anchored in block 953791 (2026-06-15T13:40:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/de058b37-31a3-40ba-9786-4bdd2a866b1c.json and https://artists.proofprofile.net/proofs/artist/de058b37-31a3-40ba-9786-4bdd2a866b1c.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 0x4707a90658b49f041526f92f9a6ce34e384879c7a9b9472eb7099e5f90a8d371. 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/JPB600921902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc28bd3e261e58d85cdcdf9b27bb211674f49b3228686e8183b2d2c91e4b19bd4. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/JPB600921903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b6d92911e69650b7a1c1b5962b56f2d5aa7055e33b27713d35c85d33fb9fc8c. 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/JPB600921905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x087534078011e2f95972d2f45e05eb66033380fe098fce0759bf01cdd1bca2ba. 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/JPB600906802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e23dd582b98cc8f222b264749bb1d0fe4a4b5eaced5668bb8ea8c40eecb2cb1. 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/JPB600921906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x534564aa94b39b080c1d23975cc6a9949c84950de0f2f90e3dfcf18eb9221c5c. 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/JPB600921907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x499e6192bcfd914ae6401b2bebcb191d5d277c167823bc852d35369110dbf3ff. 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/JPB600921908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e6d735cce6ed5316bcf504ae79fdd3eeee406f5467c62a665ff89f3c5c3288c. 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/JPB600921910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2a04775041463878ba663fa083d0f8af2233f7ea3a5aba512177bb70a9cf28f. 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/JPB600921911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88abf7f61fd79e529cf551b5164846c98af7b0498868a238bb9dd6e7dca08832. 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/JPB600921912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62c019d71f0070ee46e11ef22f3ea0380eed720e609ebd5e72230d03b80d7677. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:36:12Z), 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/JPB600921904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1461fbbeb576670dfeb730421fb8e7ba676df2344e385e40538d3d40613cb831. 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/JPB600714301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fe2f867b41341441ce9c28002d1e7d054069f3563d1e4c70671a8bdfa17ddf1. 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/JPB600666601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf599a930d1b8199dfd3b1b90326c8a58b15ad7740d80988e8f033cb453f97288. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/JPB600714303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dad6ab0534d9461aebbd8ef436beb3e0256e69d5b05943fd1ec65869614e92e. 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/JPB600714304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac9d7aed362b78e09986ac1da8152ff64f425cdb70e70c9889041f8bcc0650f6. 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/JPB600714305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7358c975447f844ceb1ac068276752d2ec883777cca1fb8ab49d8d223807f94. 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/JPB600714306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b8ae6bf330795b53135503bb3d3026324ff6c22c26a128d60d1b97dc95e4308. 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/JPB600714307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ba1c089de4327619b5e0ae8077a40b27559de72587caaa5728543ab6ddf5c6a. 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/JPB600714308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c7fa9c9021f057a79693003ee4ada2918fff8bbc94ed3ed6236d65adef8d1e6. 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/JPB600666701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3037a31bd60c63a05a6e1b625cda5e3c59be07a7a8c2caf6c7ede90e8612748. 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/JPTO00401868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48c8d2e90410ed55ac74a4d76b39e8884deae8e6d16d909f60035ae78eb4c19d. 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/JPTO00400811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8236d28b6da81a78c54d1fd0dbaf2e228abe85d3df5491c95a45fcfe36e7b62b. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/JPTO00401318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd97a4b5b533c7e007d2cf1b6c8bfa347a21738bdc1e13dac5b37f1a6e749d175. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/JPTO00401869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1fa72257cf7392bcd20c8bf7380cce7d5720dc68322caf90402b2ce440c5cf9. 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/JPTO00401871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0925662df0b9542e7554da49459a049f06e4b3cd95c909cd4d6f5925aea07ae4. 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/JPTO00401872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99b32a29bab4de1190a6aa5c3663dc4f075baf8e3b154398232b8399b436c277. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/JPTO00401873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83e182d0f6c78312fa33059888ea229caa7897d955ab660ea2e358ca3551b509. 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/JPTO00400812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x121c56bafe7054de811f342cada7b1a2e9f67c8e12bccedb1ab26eeaabc7d9da. 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/JPTO00401875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ca8c6096d40892546802465b1d7e174ee02dcc5b3685d824dd9838035805fb0. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JPTO00401317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf79e7baf64741d097a4b1bd473966404bf5e21d91c66bbbc6d8bf9b4d4558b7f. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/JPTO00401877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x749310c97fa98f27e4fc1d4f7f2833011832643ada7f9e991e7070fdd0f03245. 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/JPTO00401878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8a570f0843b9827e1e2b69a7fa19edc5eba0e68cebb622e641616446fa3d5c6. 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/JPTO00401879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36015be40856df0c00e0a8f8cd490a66cc19140d2c4c7db8c45e740ca651df9e. 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/JPTO00401880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83e447e14539213e64f40b45483298f6344f716371760135955277f1d4f7a866. 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/JPTO00401881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fea7374fb46bdaf8779cc024916e620acaa24d512ab3cf9ec16b9490839fdd1. 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/JPTO00401884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ca8c6096d40892546802465b1d7e174ee02dcc5b3685d824dd9838035805fb0. 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/JPTO00401317.