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 0xb499ed2498a56f12404f8cc0761f584c30a42c76b4bf472a8aadda926b498257. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c841b681-e83f-48e4-bb6d-fedcdca48f01.json and https://artists.proofprofile.net/proofs/artist/c841b681-e83f-48e4-bb6d-fedcdca48f01.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 0xe319c2908e652b075978b9c49b2bcb7d53db2a5994075465f04c3db4914f8110. Chain 2 (Bitcoin): anchored in block 957957 (2026-07-14T05:10:34Z), 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/TCAAY1194014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5091683983be839238b7a2977eaf6d8623250449026ca242621dd828eaa1e07. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:21:40Z), 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/TCAAY1194015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb235473c6d262dacc9741f9c46d0513b4679a7fed664a547afc0b06671306add. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/TCABU1401625.
Now and Then (feat. Travi Bongo & Andres Estrada)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd088cda12ddd92a4c63a7981618011ac8e7386b5befbc17581efe77f6d15b702. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:50:01Z), 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/TCABU1401636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1648c47a26af9835a3834b4fa94825e9c4aec8214d819f5617b082937ffea25d. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/TCABU1401637.
One of Those Days (feat. Moises Juarez, Jon Olazabal & Micah Brown)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14105d6170a17e5651da5b97eb5d45504c9b49f429e74129ae6fe38e4b2c34e6. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCABU1401642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x794b410f9789caffc37292f3c9e7f184039cb5cbafd19e8fb31c894052dc489b. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/TCABU1401651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fa1e5625d435a9a7313b9a7d15c5a06a039e8e180f200b382101d35c85ca745. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/TCABU1401652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1fd40910c97e96a354836cf1991fa33683f7c2860565a1346b93107723ff0b2. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/TCAFF2074705.