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 0x724976b853ebbc0216477ea8fba7259db8e2639e099ce2a059d46d8b85056254. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fe4f9e7c-f9f8-4b8f-8390-fb8610405a4d.json and https://artists.proofprofile.net/proofs/artist/fe4f9e7c-f9f8-4b8f-8390-fb8610405a4d.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 0xd12b1db04c21b6b140d4c6ec41001c925b779943553d80ad73ef9c6219554371. 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/TCAJH2505404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d7c9aed55a0a4ab9f0926a59519df62cf40dfeb709fac66481f2321cc730f56. 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/TCAJH2505407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ad89e51589fa610996765b8263427b845e444385ceecf23fbf2547debfbef6a. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/TCAJH2505414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd258f540d591264242c20073c17a8fe382c804f08220aa77647634a1ff781d0. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/TCAJH2505418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ba2922f4d7b38c88354ea13ab042ea0c88e3501ecd1bdd6f0df8742658cc7ca. 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/TCAJH2505424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x430ca04f49997f1daa1dedba5b14d057a35aa83fc0a908e54a4ccfeb752fa049. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:42:44Z), 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/TCAJH2505426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9c822b4121d506558fb2435b063f64398e220cc1a1953220d613f8710b33488. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:50:54Z), 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/TCAJH2505432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b4eeab82e410b3e8e251fa9e30ac5eeb8836379c0bd26aba964201728b15464. 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/TCAJH2505438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x088dec9afdd2e29e652bbb077d2f5b7a73afcd6aee9406e416997931c4338014. 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/TCAJH2505443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa54e9f6c41ff1f9d22d992afd43a9d6c717a5045a469fd620164dbbf626385a3. 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/TCAJI2505446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16e196cca7a4c63a6cfb3a03ab16636deacc1e89bca4d188266341340fb9bb7e. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/TCAJH2505449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d3872c504e2bdf2ac19422e0fcf036692b836f9c52349dabd77b5d120d7b71a. 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/TCAJH2505460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae8223dcd07e0815376d66b7994fd32e779d1c81ac6bbe2fdcd4501320cc2f0a. 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/TCAJH2505466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3968439100071337e832d2cdb3cd25137afde454754de48d8fe5730b8782694f. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/TCAJH2505470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6140e26a483e0676168b80e804894cc156abf52107c9c7ac84495f4e49a17975. 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/TCAJH2505472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad08e498c401fdfe8abe0b1929aff18a532d0236e4414de5bf7fe63a3d0c5c95. 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/TCAJH2505474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfac1e2fdfa6ca18769101feca0cb5adf69e76ed4e5222616afb324a69802b201. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/TCAJH2505476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45563bab8eb0b1dae17ba7b3eaf1f4dbbd058ccd852e222da1415c0a2a98d432. Chain 2 (Bitcoin): anchored in block 958668 (2026-07-19T05:16:11Z), 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/TCAJI2574655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a13d47def7c46f47e0e5ae6f6a5bd4647bff01014c8ecd981ddd957e3e72305. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCAJI2574658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5fc1e8f21fb66862fe27932a66b42aa0c0cf0a7576d6a2f5d2d5fccb5fdf251. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/TCAJI2574664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4f7ff855af32618e3ae378e0fd67c680bdbb866f3dbcf7cb54a208d6f0262fd. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/TCAJJ2574669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1999ea182e1999ece1e1f6f5194fb40faafeca3b78f9c5f5f985f0e8cf1e1369. 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/TCAJI2574673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13dc7420a1f8ce15293b3cec479e4eda8dfbb36cb16bfab5250de53f0ed24a18. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:47:24Z), 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/TCAJI2574679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeb4a2e5f4e478e03101be5f120f674615b86c642416138487283412b3df8f47. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:23:18Z), 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/TCAJI2574681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46ba9721c4c765f55ee84dbf8a99cfaa124d02fd0fe10e13ad540005fc5fa3d8. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/TCAJI2574686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfecfe8d4ed4a9bf1ca67dd99ee13c089a78f6ffb998498ff7cbd24b312088bec. 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/TCAJI2574689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x271f1eaa15817f46c16e4d15e2dedb0467b09ad4ae8962fdcf5c9ecd55307578. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/TCAJI2574692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b0d7d819cb5bde7867440bba1f7879e867e99959929b1cb3f95e977eb07d2a3. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/TCAJI2574695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec99145531ebdede2f1c2a8a2886d54d058a8482e62d98d883d91847b7d97e31. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/TCAJI2574701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a1a3ccf8928ff62a222ffc8135f4258b234507b296a648904dbc3c144d9f524. 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/TCAJI2574704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc813344193659376330944ccc39b46d37950bb0d6645744945778930b8338fc2. 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/TCAJI2574709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56e61001676064fcf3401d7c3dddc6efa6a8425090ccd518598e0f6ca0953e54. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/TCAJI2574715.