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 0x0f3ab2a21e06685d95ebb1ea0e5b370a6860664dd71a19a7d400acec9de94399. 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/9731223a-4b82-42de-9446-09ff952fa5c3.json and https://artists.proofprofile.net/proofs/artist/9731223a-4b82-42de-9446-09ff952fa5c3.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 0x3440166bd5a1e7b2342d06a1768b3ac9f4b191bd72a6c02fb31674676adf7bfb. 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/NLL561002540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31fa4a7e5af7f650d3cd70b185a36940ce5db875df0dd35416503dea856f6d8d. 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/NLL561002541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb271c068f1e6cac218ca981f3d05eda6ba5c73eab566f139e6672fee2321b043. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:54:01Z), 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/GBGXG0800278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81f82d8e35f8363b81ba5e4ad3e2199ff1fa9c0e9d0c402553d9f4eb3774a235. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T19:08:42Z), 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/GBGXG0800280.
Endless Explorations, Pt. 2 (Digital Bonuses)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17d181b1a8572e9f05509cb965357163b57f65018fccd151eb841a3bc575513f. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T13:02:51Z), 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/GBKQU2185570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b1061af068c05dc9d2d664b146f611ba5440d02f3367c5fe8013ad300e6e72e. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T15:09:27Z), 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/USHM92184421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b8c69a411f888aa2c493f3146b0120eb52aea90d12a310903f550c99f9974f8. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T12:38:49Z), 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/USHM92184422.
Midnight Hours - Reconstructed by Carl Craig
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf280c44c598cc8ad4855f2d21fb4ab92edaa4c913e54bf89f7f6cc17b4030bf9. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T11:05:31Z), 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/DERB81200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc522e03127c2ceda852b0782da8cb4dfa4663d3bcdbe130b2d9c7daf4a0614bf. 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/GBKQU2375642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9498a5ced7294a14b996a4bc7efb10da716fa87370d3320f047f06161671fb17. 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/GBKQU2375644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69dd25d94d31ced91867303cec52bc356388a7c27a6711cf410511e9e9f14fbc. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/GBKQU2375645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ca00b4743fa562961a915c192612ec52c1c377d523450ca1ef7d29ffdaa6688. 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/GBKQU2375647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfd614688798ac3bb82b3950a3c16d9edb745ebca7cfb2da1c9ab4fe19c83190. 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/GBKQU2375643.
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 0x2813e6a9b07c42fbd33c0d90e7e7fb7f4ea92c8c1da5b814c6baa2f104d13b50. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/GBKQU2375646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb212d354b1755f9c34ebe6a3b6a436475bfa821f99dc5e7295f26ef425d1363. 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/DEG931992234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39ac4b933492ccc80b8904a0d1b04d494073e3a7ee34baf525f3e0766cb9424b. 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/GBKQU2291108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26fd6f4cab89144193f1dfab144bf45d41a979566175dfd8a81ba4d553af10f5. 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/DEM091800191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd988bd669a350e98df79d57c6f35d8a06c419d23c21c52b8a489058bc974c76. 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/QMEU32013422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd677bdb541e7acdbabd5600e7d8802f8978bcc9da54772b374c788b2087352b6. 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/DEY470939524.
Detroit Love Vol. 1 - Mixed By Stacey Pullen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab7a38ace137a34668262e06829111ca529b493e82e01816189a0958b423cf26. 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/DEG931892005.
I Can't Wait - Delano Smith Reconstructed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4cbd484a8c37a05e99c4f6a746a45bd1c57647258073a6779139bd5021cb2eb. Chain 2 (Bitcoin): anchored in block 960218 (2026-07-30T06:57:05Z), 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/GBLV62017290.