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 0x22784b28e7f01876f41cdcb5a06683db5d35a7947b2b35f823a3dbfd36911463. 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/19c41e4c-57d6-4e2f-977d-edf996c5529f.json and https://artists.proofprofile.net/proofs/artist/19c41e4c-57d6-4e2f-977d-edf996c5529f.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 0x309c6305261a3829ccfb0516ccc23365b4cd919ff8580a75af2cddf567c142c0. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/BEFWX1603102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf03d65e7a23b2bf7c92d7503082effac86ee0a4e34f4e2f5e8dfd2ac736700a2. 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/NLR7Q1700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f7e6ff31dc01011558cbe0d2252119ece1f1d0cbac2a37e87ec90d13ac7f40a. 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/NLR7Q1700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbde3fd6aa70eb339a654b9e84bf25e55b698fdb4d0c6bdfda96d84f4becb05fa. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZTAY2270966.
Het land van Hazes, Hardcore en Halve liters
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa111d5073b947a3082fab6bf9f5ba42cff71517161ea8bccf5b56cdf18e47d9b. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/NLCK41078163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dce62c8c457c8f674acfa8ec5da684fbe337890e4e8c24a1c8123c291e2799e. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:43:39Z), 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/NLFL72200533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bfdf4107070aa70cad1a3f262841d8cb1298380bb11d553de991a4da9bfa05c. 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/GBKQU2327429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0a31227cfd757150d35168330e4ecd75bf519e0b00e2d7a57fdee310441126c. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:09:37Z), 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/QZTB82354007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b8c626a30d022ac2675b3f4c8bf10fccc6d2288127ca6103cb64815bc5c33b0. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZFZ42529970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb218d6ddceb828bbf0cbefc20a9a7bf072a19c38483839c58a0c7af5311e0043. 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/NL6P52500302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57bde56f654f0a0c59b91c3aca11e27cfe353e8d234eeb7e65a8c2e74f63ac57. 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/NLS161500064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf03d65e7a23b2bf7c92d7503082effac86ee0a4e34f4e2f5e8dfd2ac736700a2. 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/NLR7Q1700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4a5434de03a9cd7ed040670d0389f82fac797c6c3aff009ced51cddf2876c64. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/QMFME1918374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f7e6ff31dc01011558cbe0d2252119ece1f1d0cbac2a37e87ec90d13ac7f40a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/NLR7Q1700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cf6572de1f3fe9e6c4c691bc039dcc49e6cd534e301b27773122412b55093f5. 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/BEFWX1503013.
Hardshock 2017 Mixed By Igneon System & Sjammienators
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f7e6ff31dc01011558cbe0d2252119ece1f1d0cbac2a37e87ec90d13ac7f40a. 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/NLR7Q1700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x044dea3efdac4dd496cff36fd894cef90ec1736ef20c1c26d7f5b2e38a2266d4. 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/NLS242100586.
The Remarkable Life Of Da Mouth of Madness
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb2588e2453b692989e72dc6264722b13728e8c82a1d3dd834e7d1fd64f75f8c. 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/FXQ692300090.