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 0x92c3ba6b9d8e7e47455dea8cb1ea00d8b4c5a052f71e39fd8103d42dd9afbb18. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/eab4bb85-750a-48f4-a90e-2a5c3fff73db.json and https://artists.proofprofile.net/proofs/artist/eab4bb85-750a-48f4-a90e-2a5c3fff73db.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 0xeb7178190952407cfc6ad808011c2eb9d6698f036c31d6a0a5f4c0537762e4f8. 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/USLD91748262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x614a1ffa80749814da3c0ed4f2e5a455b92e37b6d4b077fedb9e335ab454399a. 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/USLD91748263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc1f072964dfcfe5b5097d08289138e3cfc4d4061fa5ac293ad3e4f7a1b0faf4. 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/USLD91748264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef5f5fb2a47499b9c37e2258344112167495b0ff4e2b7f01cc0100852c84cec9. 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/USLD91747093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a6519605269c6ebff91ab691a43a3d03ae92f045ec11a829475995da61e418f. 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/USLD91748265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c29918eb9ca10e30f3af4df1cf318a0e2af9205256940d1e83e523f44198e35. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/USLD91748266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3719dd74916abe79f2116eb9d58c253eda7b911440fde01cfe48bbcc6940cdad. 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/USLD91748267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x708f2f832650cb7c128728db4395315fe597c641e6a5191e6af116cc190ebfc6. 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/USLD91747836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba058361a80af883b284bb030f65bbf14511cc85a91991dd20a00276565a35ec. 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/USLD91748268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73f29c85784979b9d96a97dce97a4cc0474b9fe0eb00b4291e5e6f6e99f5cf4a. 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/USLD91748269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ea57b73596fba98019e47c28312190cb376f777352e3002916adc28cbe5d68a. 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/USLD91748270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3188ffeb1f327e2581702e027a7e0c7fcb685aa1504ba9262773e799793d56f9. 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/USLD91748271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x708f2f832650cb7c128728db4395315fe597c641e6a5191e6af116cc190ebfc6. 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/USLD91747836.
Dark Cloud (feat. EST SkiMike & Lil Jairmy)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef5f5fb2a47499b9c37e2258344112167495b0ff4e2b7f01cc0100852c84cec9. 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/USLD91747093.