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 0xc58f3c5399de0049ab7d94eed0549a9e4f7d6497f47657fdc6e792a02748df78. Chain 2 (Bitcoin): anchored in block 954693 (2026-06-21T11:50:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e98fd895-7b65-4d56-a5b5-cae56184d1a5.json and https://artists.proofprofile.net/proofs/artist/e98fd895-7b65-4d56-a5b5-cae56184d1a5.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 0x4af3ca4e6fa4ffde19aa072d45c40c78747ee1274eef53217a065c26099ffb01. 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/USKTL2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x812b09406dab39b79ee1281f60d541c1328cb0fb04f72c10c01ecefac20eaea6. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/USKTL2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54ca74f6160a7e94ab1775ef82f624b3d0868e842754a3b3d261b111429b471e. 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/USKTL2100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4a88545fb3bb390cbe8d3b236059220f5595ab2ed0cd162bdf6f005bc7c6285. 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/USKTL1700004.
Gettin Ready (feat. Will Lee & Ed Calle)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf81b56cae6ee78daf6ab6a2a93ba932033e7230c3e87d16e83330670252b4192. 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/USKTL1100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e0700a23eba7ad732e2b08244a0718c9f193e08b89c9bf986a1ce17f5aba3a9. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/USKTL1100003.
Get Away (feat. Ed Calle & Julio Hernandez)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf8c699ca3f9574879524a6a9b7f06e70cef582c9f5d6e759b8db967fcc74198. 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/USKTL1100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fc9a7c09b0d87ba8d36a8bbe725b3238b166f87d234d10e2e7b1b69b090d5e6. 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/USKTL1100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45f6b0fe4ddbab027b5929487c1993b311ca55531e5963eacedb1c0b2defd841. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/USKTL1100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99c123f72bbf0c921670ccf8e3ed6091ab83b43e366d415ef45a5dd41e34dc2c. Chain 2 (Bitcoin): anchored in block 960419 (2026-07-31T15:20:33Z), 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/USKTL2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6f73cadb90875f08eb62e8600098e6ee98a6ea29118c26671b057a892b2f877. 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/USKTL2200001.