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 0x88c9f08eef7c944b37801e0a003e95d1af9dedf48bf9dd8f5be62a02e644349e. 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/69106aa5-7b51-46c5-bed3-5a837661b6b7.json and https://artists.proofprofile.net/proofs/artist/69106aa5-7b51-46c5-bed3-5a837661b6b7.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 0xbcb9d260ba4aebe56ebda4e040c937be386318df0b392a1ca0f53869cafd17ae. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/RUA1D2519608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8291fc4e3cc138902b658790fd7af3772e5112c51b1b986be8d55ae760961784. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/AEA0D2190611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x204814d455c071c1ef63fad6396122da72300a7dfaa05a9bd8f75622c613e1f1. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/AEA0D2190613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x978eca9339a65593decca87908c39f0ae140f656c0d18638b7e14946ccd941cb. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/AEA0D2190615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3c1b88f735dc8a5acad8595bdc7f00682f01be09511d765ce1df49ce7b51e79. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/AEA0D2190616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7153501451dca2ea3bd62a00f70fef88a59ef9fb33b11bafbbf07f50aa931c0. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/AEA0D2190619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb0bb618ded1adaadd1d72a3f47409576fbd49acad88965b4fea703cdc59b2f3. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T03:56:58Z), 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/AEA0D2190620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x767c8d16ef398636c5fd1dc2b3ebe467653aa5305a4d52e360dbfa9dad822376. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/AEA0D2134198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07adccc038f18de3cac611b979a1f78a19fa35a8f3c4c0989c1709e49ea1a49e. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T15:57:50Z), 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/AEA0D2134200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63a96f683a784bf6f84078467075157375a7128ff6a2e002c560643391021d72. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:11:21Z), 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/AEA0D2134202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a4c45afc98173d6c11f02c411bc12c79683a40752d69473f119338bb9d72616. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/RUA1D2338413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91bae1227304f4bdb6ef7082ecb5f670291b48af17cfb64b35216f1b597f553f. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/RUA1D2338414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc059db4427635504c85193f65191b7d8a64a96214711dce236f28634822e8f57. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/RUA1D2338415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93ec9384573f34af00704c250b416e4a67dd1867c0df63778ebdf31f74480eb2. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/RUA1D2338417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8201444a66745b9f439290a6ff6ca7ea7349c69bdbf25872c672257aa3f9c65e. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:32:41Z), 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/RUA1D2338420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78016ab0d6031ee8edf0fafcdb6070f52bb2f85844acea37b2e57aa16e7fc19f. 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/RUA1D2338422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95c5f7e57bb70e2ca111390d218facaba1725938e12ed13cd4067b89dd1bb384. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/RUA1D2338423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe44d52d94238c9458b7eb5fa9cb5cad56ae5bf76090a63d52a72d4c3e5c2b0ad. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/AEA0D2134205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64a1fd7db122cb6c698073d27bcc9205b499f74c1ac6b2c74ec1954f506ec615. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/AEA0D2134207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffc36f63f1f8fc278d761afa63d4f18b173e17668d4ca24e652af3abdca323b1. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T04:28:08Z), 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/AEA0D2134208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x518565c4eb6dd33231d5989c2c7e391baa13af2c99e53b8e28175a4bc2646357. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:51:23Z), 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/AEA0D2134214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4692918188b6cb8cd9344af2f5834674d49f620701ceca207b722d54aa32199a. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:44:04Z), 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/AEA0D2134215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7619b2aa810b9c6d154c1bd6008f1d5bd02906950ad41b36baa075cacf40395. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/AEA0D2142487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1702ca9432e37312cd4109935d4c96943dee092a5d7fc0d07423c946e4116fd0. Chain 2 (Bitcoin): anchored in block 958351 (2026-07-17T02:38:05Z), 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/AEA0D2130526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b904da6356b3aab70b962b38c725f64f8d88661b9f65234e5a2e3246182d32d. 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/AEA0D2130527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc4efa89a5a2d9f8db3a8336e8e636247c3886b461617a290a720954398e2b52. 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/AEA0D2130528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7d0d3ce9d5e695ca81d292398178909f79cb31daea824a1f55650bf4e9d2ab1. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T07:08:56Z), 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/AEA0D2130534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6f92cf16a7b41f4c9fcd956189631c894acbf90621183e39893b09b7b48fb49. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/AEA0Q2075783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3506a1dac14badae638e6ac8079e94019639577760faf2afc5a7ce078ab64640. 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/AEA0Q2075785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3552d43fc40399161808624c519d6496ada6648f7bc4a7ea1c71266a49edac67. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:02:25Z), 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/AEA0Q2075789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bbb41bf6f0d4893983b67ed2a3c0c5cce25719aa34262fa6ba78ae037b0ac6d. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/AEA0Q2075791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24ece659a60fc126f4407bd78685ba0bba446e6735a0f48de5798c537e6aa95a. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/AEA0Q2075793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe37fe71af3c9662eb73a0860b7689ba2ffb2d3a6728043a9996b85a983dd1885. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/AEA0Q2075794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4be6e17388b727a9e1414063d638a0f621d62f57c7fcfbb1eed98729a458f75e. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/AEA0Q2064325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf545ac485ea591562930dbfde49a2f7c3694dcd1ba834b92f194fef336fd9166. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/AEA0Q2064327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cc11f6a66e8b792a860a9fffaef8a42ae0c22e6faf9415f392f26d6a2e6ac9b. Chain 2 (Bitcoin): anchored in block 956430 (2026-07-03T02:22:42Z), 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/RUA1D2368203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a795c172bb2448920eec87737a5f94db72870445100179840915507604bc872. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/RUA1D2368204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac4fcfd1d45bbe6969776b02062ad6cd9af6ab040bda53a8319b5ec31a3f34ce. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/TCAHI2340343.