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 0x7d8c504a87dd16c95bebec5c6fdb150b1be33dea6aac85da2b0cd47110932973. 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/fb113726-9ca8-4710-9e8e-e1366a233d9e.json and https://artists.proofprofile.net/proofs/artist/fb113726-9ca8-4710-9e8e-e1366a233d9e.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 0x613f0036199bedfba4aaf1e455b2155aa442b0826dc63e4e3bc8e2c1d13fe1fc. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/DGA072298792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc882c0c8ed6a83bc64ed7fcabc15c89d5feeaa9099bf86d25639f2be955654af. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:00:31Z), 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/DGA082270115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcf9d5e739d29e1f8b1fa5b81272aa9e637d4669356e438a4d837e421f61695e. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/DGA082280751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9de0cb2db4eb03ec265dc16466abf5a5f12e9a56886d7177b7809e75bf562506. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:36:04Z), 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/FR10S2304592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x840534dce3491b0afabf9d747e4d7fbf7868ec981634d24f9d1646d764d29e44. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/HKK972231919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x867c99dd46d3fb33e974a71f64f75cbc77c9b583119daabff36535b46ff23afa. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:06:37Z), 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/FR96X2349473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcf65b2a571e690103920d935b8f0ae6b9f31ad6365513e627759004175c8162. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FR96X2392003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73b8332bdfdf536e20a57c63c305181cbd27112ebe2d86c9d31022b46ff786cc. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FR96X2392008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39684a6c5e32ff5fb5870445a0751e2596f5f9aae204e65ac5958e97fa6bde2d. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:42:12Z), 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/FR96X2392596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1066a3c067da4c4722e77d77c2213b29c376f82cd35532116dcdff7d8c7e6bb7. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/FR96X2392601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb0bc5125264ec6636411450e8619732ceb7eff936e8b8179fc7b9d915a429c6. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FRX202320688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32a447db204bbbe2186c86d993cb256c510059ba919c1a92f0ae4ef64f5a3ef3. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/FRX202320684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x183ef5fd2921eb7db15f2030129700b259b823c35afa9b050f93f8efaf58e896. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:00:06Z), 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/DGA0L2353470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9f8b0cf136ddb3ec538b4a9f833d2475b6e33ab7456c98a282f783229711fbc. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/FR59R2432506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3534a04e66ee7081223421e1e0d122e476626aa8e22e760979e481b70b229124. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/FR59R2432508.