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 0x1eac5efcf207ad4b95d5ba663b4a3e429a100695d001695573682247848e378e. 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/43baedd2-a92c-42e9-a91a-d7e4ea42471c.json and https://artists.proofprofile.net/proofs/artist/43baedd2-a92c-42e9-a91a-d7e4ea42471c.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 0xbfeb712ed4525e1fedb1d65abe49f969493639080d9b956342500ec14a9067a7. 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/QM4TW2270428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5076fc0a76d4770d2f0c93099e5e3327998b8b4739b9984cad0f552debb7eaf. 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/QMBZ92379274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea03f21f3db9d1334d09a29f95061feec2bbbf30f07c129945ce79261b0c95fe. 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/QMBZ92090838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x487ac617232f8039a40488905d8149f34a70fe6410a762f6d6161f319d2f52ce. 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/QMFMF2215307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc02de77770bbb3aa678e7b882a2014349f7e5e5e4a36352abc801b29bc3959a9. 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/QM4TX2205131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f6f1f2c4f21df3cc186e9884f40e7aed748c20365f2ee3f01741205c68754a3. 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/QM4TX2205132.
Shrimp at Phillipes (feat. Benny the Butcher)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4818c9b05ece2c382f09077ed84552bdfd5e83d6ab2c631dd06ab6d83d28e629. 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/QMBZ91943930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eea197f74bf740d71d77d19a8c1336697f990b5391dceeb84d6b7ad72ea8205. 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/TCAEC1980531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29d4e7c4adb791a556ea92a6e69d1a9a508d3386adddc4c0e8af07a3e86812c2. 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/TCAEC1980539.
MR. PERFECT (feat. Boldy James & ElCamino)
Sand Castles (feat. Benny the Butcher & Elcamino)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7bec73bd494e2476195e9682d12409307006cb845362ca551ad4a680bd9d74c. 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/USUYG1267297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11d66121b861d7da258ae220da1b88e36e29370ff40b21694abda032e35b6a37. 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/TCADP1829878.
The Price Of Tea In China (Deluxe Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e733e8339c61898debd1b512fc5d0304554d18efb9e666578e1e6689d6a6765. 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/USUYG1322385.
Frank Murphy (feat. Stove God Cooks, Flee Lord, Estee Nack, Elcamino & Smoke DZA)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79902f8623bca891c2a29c878fbadf4202d5d6d27376296f2ef11ff9f5e75a61. 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/USUM72016762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dff9fcf805df061a386ee5d786d5f4da964e1fb5fafdb78e6c4d7b029b48a9b. 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/TCADQ1859876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcddb7201249a70db0dafbad4026acf4118cd675d390c5f2e86e45cde2331f633. 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/QM4TX1897434.