1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xa47e45bcfad7de6118cd45be705d744826f8208745e6b31b366c36d51ad0ed99. 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/28c6757d-365c-4632-a63d-4d1b055ed3c9.json and https://artists.proofprofile.net/proofs/artist/28c6757d-365c-4632-a63d-4d1b055ed3c9.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 → block OTSBitcoinBlock must exist at that height 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 0xb85b474484ceb339b5bd05134fb305e696a7b79d8440dfc699a9d70742be3f1a. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/SEYOK1713525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28f2dc20c450eef5c5bd0c3b932780b0189c74759dc9e3059843706f06402387. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/SEYOK1713526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ee895eeeaf18cdc1fa6dbc4d08c7d6bd9d7b1ce72a9022186dffcd8177dae57. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/SEYOK1713528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e65a54d03df3f3406beca42fff13762129df8129bcc05c21fe4ff27e10df44b. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/SEYOK1713529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9439098ea33f911a59f232e656a35681cfd97683ffcab3cfcf524d7d30614c58. 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/USA2P1829052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43d7c31c70d7d2108c31da60a73947b4612acca50b9820ed32fafb5a2d39d78d. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/SEYOK1850117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10cda1dc204dbb6ff885f2eb0fa8685ac0513132130477d0efbdd31bca86f412. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/SEYOK1850119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03d4b48375b8c91b71db8bbd04c38a496e163f3c86aee82e93ed5141b2b8cc62. 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/SEYOK1850120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f069b186f34dbdc98e2882a754a582d4233d1bdea688b47ee60adbfcf88c22e. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/SEYOK2020943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02e3521096b500228a8b6759efc7a7e91b766042c09aabdb8ed7a3a59d89be59. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/SEYOK2020945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b575361cc6ec2f4da17b4dca0addaf42c4a821d42128519cdd7dc73c01e7c2b. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/SEYOK2302694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68c3c7b6acb7c0676f65d50cd0719e1cdfd32f2eb29757a28431caf16ad970eb. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/SEYOK2227791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc6485a5497dc5c98b4e24edc455016c20d13f37cf77d670a538de208d9724f6. 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/SEYOK2302695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15eb73ab8cae7efa3d2bb64134ab7fc5e22c8d1b759e1ce52c80532377363244. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:03:27Z), 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/SEYOK2302696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f895c4833b2b48d7bc3580aca30d98485a9eb1ada07050c8ad536c7019c19e5. 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/SEYOK2302697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b575361cc6ec2f4da17b4dca0addaf42c4a821d42128519cdd7dc73c01e7c2b. Chain 2 (Bitcoin): anchored in block 957735 (2026-07-12T17:47:43Z), 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/SEYOK2302694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f895c4833b2b48d7bc3580aca30d98485a9eb1ada07050c8ad536c7019c19e5. Chain 2 (Bitcoin): anchored in block 957737 (2026-07-12T18:02:09Z), 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/SEYOK2302697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15f2474370db155ddce19b4a5e34ebafc9149fbeefdce43aa7b30cb652134727. 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/USY252309718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15f2474370db155ddce19b4a5e34ebafc9149fbeefdce43aa7b30cb652134727. 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/USY252309718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15f2474370db155ddce19b4a5e34ebafc9149fbeefdce43aa7b30cb652134727. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USY252309718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15f2474370db155ddce19b4a5e34ebafc9149fbeefdce43aa7b30cb652134727. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/USY252309718.