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 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 0x2f399b757fcb16414a37e0d7c913a0cb8d958143683119b1829f0f0e507d01cf. 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/035ba96b-3c58-4cec-9331-f2f05609032d.json and https://artists.proofprofile.net/proofs/artist/035ba96b-3c58-4cec-9331-f2f05609032d.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 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 0x605f8e8ef6e23329b2e21a7c4673ba3c1a47c357202761954910fc22b5c8e0a3. 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/ESA092236056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0c29aebf7e792d32000d2f33f85808d814ac69538a80f60e38749a1c3731194. 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/ES71G2401410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6753f2c406c799c9d66a23dc342f1b6705ebf6c478ef2265cccb2d6241614e17. 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/ESA092318876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3dfc131bf55b2f3789740ce59008f49d960723c6c3e9adb18c2eb3816a07731. 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/ESA092318877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e952a1a0530a28352ce505c0d2d17de526486fede94535e2ce5d8246aff0f32. 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/ESA092318878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x487ff7fbbe4655a8a38031eff9340b373c3d168c9a7a98590c1fd47d9b876312. 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/ES71G2321030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e8871777aecd2e39ed95f2cf48560ca2128bfac7163bf22ff192a77c0c22754. 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/ESA092318879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f1a310308e735287e0c0568a9691074277fb78a541131c0cf65bd055cfbd97b. 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/ESA092318881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27ddd3bdc5cb16de39bae50190ec0b8ee0c1a8e59efc14a97ea27d6e2a42c5e4. 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/ESA092318883.
WHEEZY - Malakias Remixe (Keylea Sessions)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e3e9f5aebf7b57bf08e6703f5aeab3e32b1983b72d09a55680c22816f5f6a3d. 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/ESA092402113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f9185eb5b93dcf996c3b24b2ec87173a728eb0a5dc6c7cbfc04adf9b89cea03. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/ESA092305401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x487ff7fbbe4655a8a38031eff9340b373c3d168c9a7a98590c1fd47d9b876312. 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/ES71G2321030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aca062b9ab4bec96afa0a288b6bdda93b0d23c6ab3812925186abe0acbc3d24. 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/ESA092305398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce14336c7999710bec407cf4b34cb918a3a37f85679e009b0342b157c84a43c2. 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/ESA092305400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f9185eb5b93dcf996c3b24b2ec87173a728eb0a5dc6c7cbfc04adf9b89cea03. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T16:43:41Z), 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/ESA092305401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b1b0db264573d5bb734019ae4debf97fd34d869e045e31770ed40feebb8e316. 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/ESA092305402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b7ce3c7d484e27c27bac4d00ccaf62f7e5eb6bf6bbf234bcae9976b72322992. 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/ESA092217340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a3b7acbd367424933158d722ba3c314e52e4c8f3403bd4da399b5d539891890. 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/ESA092305404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x605f8e8ef6e23329b2e21a7c4673ba3c1a47c357202761954910fc22b5c8e0a3. 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/ESA092236056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fad4aa29fd15e0fec75c6b7ecf667f8e9dedddffaeaaa4e4d52cdfc9c7ae62a. 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/ES21A2400059.