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 0x2ac2081d471ee0c71281efc193122f4de4deefe9f5bca7e4475dc10a52633446. 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/dafa8cb3-2492-4aea-b924-9d605ede9bf1.json and https://artists.proofprofile.net/proofs/artist/dafa8cb3-2492-4aea-b924-9d605ede9bf1.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 0x43a93630c9610137d52335dd7aee09eb68472436e3a8624a702542929189a3f6. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/UKMLV2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a9594c7700446206a91640f3f25c023eb554398b1e7b26a13c854dfa5e16ac2. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/UKMLV2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe178895f6acd5b687387df9d059f7ebe0d2523e5f05dfb501df2e6f3b659467a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/UKMLV2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfa80ca8157af2289a1adac62a91f01fbcd04e7933cdd307fd5de4a7f91f02cf. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/UKMLV2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e6a4501a7dbd75250c5ea081db6b558bdda0ba2406d676ab5c14ce4bb575c7e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/UKMLV2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xece4cf289f53253f9825821b2e2b93a580715232c53726c57478bbd045a04289. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/UKMLV2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07a4887f421da6cb88758834e89f0553a02af89bbb8970b07127cd4a0e83cadd. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/UKMLV2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb4071e436c4c90218ed23d74bfe1b6c7637299213be18f02fe5fc6d8378fc28. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/UKMLV2300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07a4887f421da6cb88758834e89f0553a02af89bbb8970b07127cd4a0e83cadd. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/UKMLV2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x139bc4b1190420d5977b674104b8a666d6878cd0d88c795568a02643095dc536. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/UKMLV1900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83de5b044b0d8d8ecdfb493c6202f761e3de824481b7202768620deec98c70dc. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/UKMLV1900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78683df785a6913a2aab3cab453f4160fb8607d12da7f7aebc1f8c13705684ef. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/UKMLV1900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf54fe08a6cd5fc665b7bc891a9da9b8aeab22321437dfdaa4dea0d556369bc8f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/UKMLV2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94fc1cffd4a1c2895b9ca4c3ae570f4821e4cddfe8225e65c624a6f939910dda. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/UKMLV2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde524bd4a76fa72162396ca088521b863ece9380261376a7c633c2e7dda1ad3b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/UKMLV2200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a36ff860b639260b609f043aaae9f211b92cf9c21c49ece8098d61fe4452228. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/UKMLV2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0ebbf2c26fa4fdf3429d093ec0c28315a8da459adf903e1b643ac03a3a9db25. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/UKMLV2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ef52dae057bb30634d78f1e7bb1dd226d2f47ff78b82247a2d51831cfabb0a9. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/UKMLV2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x655769d706b5777d447b70cb54838813f4cf2f16bf9f975880af79f8cad6db5d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/UKMLV2200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2662a5a82408d8303f934b6ee41d83cbf0d7deb00f3b265ea0c6be21a19ef463. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/UKMLV2200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73ae51417ab315da32b563caa1e126b1f2f97838e7162bc4e227de5d81e28c43. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/UKMLV2200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f7d4728610d318ff01162a953c05c4e30ee8b8d0aa193a753374ed126631b8b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/UKMLV2200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc64b6a19299819ac7b6c758279be775c590fadbd8f721365047aeb3ac61535fc. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/UKMLV2200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78496aaf9a016e66f8d8d926ba2852466f1bd1018bf8478ff2fec276c6d573c3. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/UKMLV2200012.