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 0xeacc35fc4a5a12bda61768db749efeb0b41fc1563988a1bfbdf5af7a36e49f45. 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/418d47fe-a6a6-4be3-9570-bbbc7d22303a.json and https://artists.proofprofile.net/proofs/artist/418d47fe-a6a6-4be3-9570-bbbc7d22303a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Defiant Presents: Courtlandt Over Everything
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 0x5db5e2ea2fec7bc90c45e4e4da2bee122086f9e33a485e23d8e6720678c17464. 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/USWB12300974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb0dc84d0d67c8dbb8d5c11475274a6b1a28dddddf3e602bb4da8abaeb950436. 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/USWB12303596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7236086daa83885e8a7d4bafa2df10541ab72e4fc2463e31465a83efab4b1ffd. 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/USWB12300738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2b7726070e8a38bbabcd1b644cf63b49fc6860056f707e67b59b806b97778ce. 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/USWB12304595.
Who You Touch Pt. 2 (feat. Trippie Redd)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb00cff4a8e082549d874054d1b058c7f18ada58a4f2006cc5de1fb5d6bd026d6. 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/USWB12304374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x482bb240552b896041f9c2b55cae255a313078e27b28937ea4d8f91488ae8806. 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/USWB12302710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x218f99359a09df13df5aa287de2f4e01c5d5875646e78597de00383e984f69a1. 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/USWB12302728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb11fa7cdea7fd734f055c5fb1357555f5b9cbcca27b1c0f32abc413fc42e114d. 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/USWB12300978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e425dbd60df1f85c09a0d8f74a0b51675b933ee774ba9b300dcdd9e5e9ea5ed. 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/USWB12302726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cfe4e62be414d6fb2f9df931307c5b22edb9407f669984f6a4601e1468c0557. 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/USWB12304233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8f87cdcfaed960be123d130f3372a92d2ab2a74605ae641a1eccdb53947a456. 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/USWB12302712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc468c0e26b1a3fb6733344a46c5394f6b73b2c89cf127bcc381b9c949a3e5ddd. 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/USWB12302713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a65f0574de5f1402b3714afafdc72a18e12d7d36082e1486b12cfe93ac64a4b. 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/USWB12302714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86490e8723b7d90e8ab8fce9d1e9862e2903747887f007f78d450947d0f28c40. 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/USWB12302715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86e5f49faa99b9af81f6ebdc6d336898f2423edfe0df1252227bbbbfce9e33a3. 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/USWB12302716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcde0ca8c3dc8ae4c62f95f47b49cb2313d5e4ada681752cee23231d8180e15f0. 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/USWB12302350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf75e12ab17ece000d9bf4542b23dc7156df82ce54afafa738fc7ca3800527eb. 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/USWB12302717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68ded9ad994d8bc98b2075d959c3d9a5beb656053e4d1fb64ff743de46536a5f. 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/USWB12302711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaa6e3b6fa4e6ead41774667c1ec703cf94de80215f345d2fc9bb8743a0fd942. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T14:46:21Z), 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/USWB12302719.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f4aaa79e79feab6c5bfa66cab46b1d98880ca7f4432659840f2c9eda2abccf0. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USWB12302718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb9ef1e1e46349b89139acf53e91184ae42babd1da53d64896491a03552ef6a5. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/USWB12302720.