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 0x911183f9c7ed5ad1842c518faa6c021c1b5e771ac1eba48b47fe918197c77417. 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/db374591-65a9-428d-a2e1-d977baadd91d.json and https://artists.proofprofile.net/proofs/artist/db374591-65a9-428d-a2e1-d977baadd91d.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 0xc20ba085d95aa02fa927d3f22c1d4b27d5ed84d3193c4fbd834cc9b3f85e8871. 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/QZTB52280842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x836342b06c93d77da822f75d554e7fc9e62347706c01df3f6bbed9886748019b. 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/GB2LD2110063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85e2413c674e3d3b42f721d2c12018b02e254ab7260ddc22db3e942d0bbea685. 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/GB2LD1900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a451b835beb82a1b02d0a516dba95805716d4277aec5ee46ac579caea32ae30. 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/GB2LD1800642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1994677c17e3367187e07c1ba4da36916c7974cc00529c596c2bad909a254d8. 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/USA2P1823012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x105060202d5cb648c842968c61edaf60bb0cbff6005edb739be2cb925b97dafb. 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/GBSMU4083470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc19265186e1bbf2e1efbc4395484ca550ad97b81d5595467d9c5d3080438a2c3. 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/GBSMU4059636.
While You Sin (feat. Edgar Sandoval Jr) - Dirty Palm Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb03767c664faf1c608924a6145a487c2534e599319fb36f3dafbb6cb5af42c69. 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/GBSMU3995376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c6f6b08916521b0abd693c4fd32b7d587cb076f50e286020fb895152e4b6b93. 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/GBSMU3806593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b8b47312eba405fb5e9734fd64a0564241181ca5722a514804116936c7ad039. 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/GBSMU3476295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39e1289552bac76691c97c7a14a1abc8978dcc0cec1c32894f0b8091d416da2e. 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/NLRD51708099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f9aab81051cb6e39cb404c8ab76dcf5f1c7a4dfffa6b8b907813e4b8626414f. 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/NLP1X1700008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81a84140710b4d8eea018f8e9d4efd7b0953ac30e03fc2e771ab286c7ef61956. 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/NLP1X1600053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a451b835beb82a1b02d0a516dba95805716d4277aec5ee46ac579caea32ae30. 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/GB2LD1800642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a451b835beb82a1b02d0a516dba95805716d4277aec5ee46ac579caea32ae30. 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/GB2LD1800642.