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 0x9d0c33e5e6ef861a6d0371d3f58d3398b0ed65d0dc12226524241c2fed876f3c. 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/2bab5b51-8d5c-462e-8532-3f19078245bc.json and https://artists.proofprofile.net/proofs/artist/2bab5b51-8d5c-462e-8532-3f19078245bc.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 0xe185fefa207732526fc482494d6afc401b2eadf87a706fb8a1e802ca8eb127da. 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/QM4TW1561233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83a0655ae43b507adbf251d86920371b6a7bac4b106b87b52e8586c988096518. 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/USL4R2165507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb28fe561f7c0311d012ea553896f2360007df8508fe4c5d7104ee81f3d6a6fa2. 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/USL4R2165508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x494a606c30ceee8125896f8cdb2e3166e304caefdd4e3da6e74bb0883435dfed. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:32:54Z), 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/USL4R2165509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8000bc0fca7b74ce5b7e4d2adc527d71c1ec0620e32d28973f81d107dfbbe7f5. 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/USL4R2165510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fddc87372fe9dee48288b04e553535224f5d5e0dff25f2206d5ac7f1953d121. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/USL4R2165511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbe5eb135ae82a628766c6cda3b3ced7ac8f85dfb6cbe8c2dca3557cb7262b8c. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USL4R2165512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56f7c9ceeb334e805c3dae86db4d938a8e4764dd5f831881f7fd93e9e92dc0b6. 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/USL4R2165513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3da9c640d170a6a2dff27ff97c84f49d34246336f94c5f11336e69fc7ab3023. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USL4R2165514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7acf694a38be756d8d0d85efcae804c4b52e8633aaab1303e4cbebb78e22cce8. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/USL4R2165515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x936bf99d36d3bc075ec3c923809285166312a27d01ff90ff19967b98dd158746. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:06:19Z), 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/USL4R2165516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x284d052f11a5619c3390fe042efb3d256f43fc209c303b8047667bbcc75f3869. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/USL4R2165517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c53f551e6083d2d1d38f9a36f8ddbc4ff12d5a1a25e992096c3626b0be183bb. 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/USL4R2165518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d91a8b342f47dc7380cc294d2127b5ac0cb1d849a000aa76623a36af78859ea. 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/USHM82297113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf35f9c4eedb19259fa15bb10b2c8f68e10aabbdcd6d5d53978281935543a1a4. 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/USHM82297114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61ccfb4ae7fc45b53a71b7f465a4bec239e2cf9b6469d371045d7b2205f9f9b9. 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/USHM82297115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50405c86a956a142dc54c1268d5b87ac7e75ac3857570301b6e2f233c1fda687. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/USHM82297116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcee4caf2e1b74d96076bb91f60f65eb5d05b8927faa82b8f57c32f8346a4f79f. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/USHM82297117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c8f1c39f0abc3e4c035df750e75f7459786bcb48ab3cb00a060dd9b8dcc7d5d. 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/USMH92353318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a92d77bd76f593428437905668e8e323e0134e890329a40b7ef8814a6427f66. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/USMH92353319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27dd7a356ae5c78b3449ff203b2ca862565406eca8cfb8573e5b4f39f8c1e46c. 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/USMH92353320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83b387b1d5230ce8a644266fb00dd9ddb82405c9c8408cbc7652a1ed1dc87a36. 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/USMH92353321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x884c52a207b95aa60475ed1b439bb2cc5e4a3691d22d04d4d1e2702883486692. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/USMH92353322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74732a719ea4302b837f7dd0f0b85e85745fcbea5ce69037133690038d1ce1e3. 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/USMH92353323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4704a259b0ecda2b9f02becd367631002c0aff61d4a14a96075c1b9ab184cab2. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/USMH92353324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef0a5fce01e788db91d119de274f415124650370ddef6525b13d99c5f0bd550a. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USMH92353325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6f0e75952bfe31f436dad6e3ce4cf49445149df967baee6baa59b65900d5557. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/USMH92353326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c99a077659beee7cc3ff2648f0d90d7aec31282d7049dbca98283495e8fa0ee. 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/QZFYY2493489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6db1dad6600363989a641e0fbb1a65481c75bccd66bb2ce2f6c0903d6a8bfd81. 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/QZES92400072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e016401d2102fc1f9eecbd8e2b89e222f932db9cc18367614a59a26b67b43b3. Chain 2 (Bitcoin): anchored in block 958529 (2026-07-18T09:21:41Z), 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/QZES92400074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa46ab1e6fdbf52f80f1a8ccfa3db3d5a11e1f710209f86cb54844c242aca4922. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:45:50Z), 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/QZES92400075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9b461864b3ff21d8bb1c009aae4472ee770d51f25e09e56382b3e328f6eb07e. 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/QZTBC2464107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98eee3fe6935c442003434992fc6686f7998f67dff83b63a6cbb46642185644c. 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/QZWFT2426383.