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 0xc612d252081863db8fcea0dfbcf4ae50fd88a1e9ba6fd11b2ea75f83c6dd943f. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c1179764-d9a3-4056-976c-7d2169eed34f.json and https://artists.proofprofile.net/proofs/artist/c1179764-d9a3-4056-976c-7d2169eed34f.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 0x448eea88b138116b1388d46da966411d1e40108fc2af92cc6f26f3deeb5a0ea2. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZDA51968641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x831c311c3618d384973543b90ab430eae9b3020154960bb680b8228f1e71fe89. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/QZDA51968642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59baaa632885da209173daf5d63dfdc2a82210edc648e735ac840bd7f63ee377. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/QZDA51968643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf9d0afe3e9871dd0e8162582f8e4f07d26729c7d9488465005907903d67883b. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/QZDA51968644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9926c677e48c9158a818797d7d7f45f5750da295cf12d1d337b77606d047ff14. 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/CBAGZ2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc2a1e587392af8d329364bd8ee6bb8740eebefaac24c483113f95c2a07a5fa8. 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/QZDA42196634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84aa92d227ce7723ae0223bcef04d391a28e06032c083bad89aac02e64fbcf55. 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/QZHN81972861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc89b0751d073aca4cda4a0ea71f2ebe07582838cc2b8dc1321ca27cc9858b73e. Chain 2 (Bitcoin): anchored in block 960225 (2026-07-30T08:04:30Z), 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/QZDA52135149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12f5fea6b06cc46d4d5ef49695b62caf12296d263c6f12e2208f21190b293b63. 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/CBAGZ2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f87dd3871d6e79b865fef9c2f57680c1e002aff05475e4686e2a644cd7ed3bd. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/CBAGZ2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9926c677e48c9158a818797d7d7f45f5750da295cf12d1d337b77606d047ff14. 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/CBAGZ2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79000ebafce98d3a9fbb55d7191b9a142f893313a5f89cefdf68df8fbc8dbb75. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/CBAGZ2100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dd18d793bc7ded205c3a83caaecae603e0c96bcc29d97fdca48f81e60661adc. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/CBAGZ2100006.
Right In Front of You (feat. Ozealous Beatbox)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd72bb969a1a5c5b0e14e12dccdd4d9f99a69db875e28fe88167ffafb82d1eb75. 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/CBAGZ2100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13dc5dbc304b2c09a8afceff19ec77da9d8fe44609519e743be76a0507dbad7e. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/CBAGZ2100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb9e8eb66b490ee34cfdec05d739d4e5e6b475fa3fff2b2f345f901ef9fd38f4. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/CBAGZ2100011.