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 0xecb7752ec2bc82ec1d3f241d70292a26f2ab7ca1ed1c9333a42dbff7f2d0b15e. 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/205d733e-a2d9-49e7-b12d-831858f4a6be.json and https://artists.proofprofile.net/proofs/artist/205d733e-a2d9-49e7-b12d-831858f4a6be.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 0xdee5b9ddc5d2f8d918b0d4a8e6a748eb1657a75da4553eb72cec9121feab5922. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:32:29Z), 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/USJ3V2098733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe1b769811ae125453859121f449b2a9a61df9163213d42167a79f8642c68424. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/USJ3V2098734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1429d7db0f4727cefe85f63a651c5facfb9b4099f1212635d6753646db86d61a. 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/USJ3V2098736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39ed3e90e92833db0e2a1b9cf31cf8d8af9aefe9611c46282b65682c0cd759ec. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USJ3V2098740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b7ca5fc679326003616da30afb5ec6ecc1fd1e2321fe3cdd73a192dd94e7459. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/USJ3V2098741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9066d1b790b8e0d982642d8a2989c4fcff06824db516c6bff84ccf9aa3e2742b. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/USJ3V2098743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x037133e8f9aaa9e5878c64bcab66f0d1b708943cbe72df8902d2c459cb86e23f. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:38:19Z), 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/USJ3V2098744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b3ac096632f5b720ee64b4ca22154bb0441078aba4c8f6ba03ed41d32dcaca1. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:19:55Z), 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/USJ3V2100326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9e9332f5d7c893139c8e7445418a58d3bbacca40e759619c1f5d36379f2852f. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/USJ3V2100327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe79d9e2fb820aba458c000e2413fcb8b7bb85af3d8af1b6df5a8d38bda1fdb5. 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/USJ3V2100328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e956cf0a90a634c30cf9f53a4316d5b747659677c9266d5db51586610749f2f. 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/USJ3V2100334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a0fe3edc507ef8c45dd8e0d162979adb51a0cbc357ab6bff7947dc571f5e55c. 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/USJ3V2100336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37e6038eb55454d4736319f4ef5ea6d4bb2fb23d8699599b41c41266a8797cde. 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/USJ3V2114147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00f4ba4ce936704c84166be59bde623d7e100657d79e2e49f69170a43dfeee4a. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/USJ3V2114148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf17f96499186c5742baebcf84e344920a04b50a660f6b63f54773f4afb8cec80. Chain 2 (Bitcoin): anchored in block 958681 (2026-07-19T06:14:54Z), 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/USJ3V2114149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf87a3aa8e30ef8719162736a05344d4a2d34e1dcbaa28b4bf1475c08f87e8dc. 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/USJ3V2114152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97018d5bcced939fcbb810e50d75f6d931267d78fadb00d7a388b6e2cf3c0d0f. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USJ3V2114155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeda78d6973bb6f77b58ebad6a82a8feff16fc18f2f25728a077ee3f313dc7a50. 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/USJ3V2300307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f6765ad2caba4dd54392da92db11976277c5f918d460761afbefbcf757c8511. 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/USJ3V2300311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf25661be7a37d0bca267c292d04f0d787ac6515ee1a820978a8d5f5d003d4fa1. 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/USJ3V2300312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aa10576f9699a68d13b341dbb3bdd9577182ac542f858c39271428e71b21d23. 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/USJ3V2300313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59963f7d0a9a658daa6d24c614be433ee6c7360f45019ce3f6f0c58a3c35b89b. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:40:15Z), 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/USJ3V2318227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5091895c9bdb4e830b4288496577030da4a00835106ba106451a0179f7945c63. 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/USJ3V2318228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6583e8133546ef5c37b54146813b58fd3dcb6e6ddab4281cf6b2f252f3da72d. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:23:30Z), 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/USJ3V2318229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48b1ccbac95df2107d6a20a65d518ff542dad3865206563ab2466b56be41e43e. 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/USJ3V2318231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffff0a10a9b68ffa560cd5d15577d967dbd793bebf53aae5e475c057e6899b1f. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:57:18Z), 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/USJ3V2318232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00198b5b1e80ec8221543f55bdc6471b2b50361110e6fe83fa6c156139d970dc. 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/USJ3V2318234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbd45e1bbb4129b7e9bc875ca8d0d3823c7d2a38d3c5acd869ebec08e7ed594c. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:58:14Z), 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/USJ3V2318237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x439940b35ca7877730029610e0c33625ff449ef3a50d2e8d2243ac744f32c54e. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/USJ3V2318239.