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 0x80c36e56b374bf9c711c403b5058e0d166b57fb118af3a6e3e06742057f066e0. 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/d912d2c5-7e88-4d2b-848b-8311213367c9.json and https://artists.proofprofile.net/proofs/artist/d912d2c5-7e88-4d2b-848b-8311213367c9.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 0xa976b5b7f70bf958faa4358460757990a4fef8f4ad9aa900e4efb5da59da5d65. 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/QZHNC2007199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30681d1ab7db37e9016d302c737248e2932c6de234658f80295c6d7bbd6451f2. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/USLZJ2053027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6432eb90068d04faf6840c9cbd9791a006213193d260b58a1ddc808ac017044. 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/US23A1539659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2728d27645f93c32d067025e79b08e5cf2286ee396acb2f42719998783237434. 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/QZTV32202641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc32554eff0d8328a8fa209c8b6d8cfa6c5bbd6660bcb17523107c3163402bb6b. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QM6P42389547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6dc76b0375a4d7abb0513ddcef67b186072fcea8bc7226e1f3e4f9ff95ae004. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QMFMF2303247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x409edf5696612312a074d6b02bfbbaa5e3bd710b9d3e2049db14dc438c695662. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QM4TW2451713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b8437b00c981018efe05ee0ef30e48f0b6f961329f6ef400eabcfbfa28efc8d. Chain 2 (Bitcoin): anchored in block 957644 (2026-07-12T03:18:52Z), 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/QM6MZ2472515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x163c14d43c87e815e56c1931c3fac8d0fc7d24761025cd13eb8e624babcf2bb1. 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/QM6MZ2497762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x409edf5696612312a074d6b02bfbbaa5e3bd710b9d3e2049db14dc438c695662. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:55:05Z), 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/QM4TW2451713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5f4b3520ca67850c1c4a4af58852c4c41e0ec6c164970bfb4c9b19ba5998ba3. 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/QM6MZ2497764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ef70fcbcc1a82aba73e3a25582584491d690e138179ac5f84d4169b6c8467b5. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QM6MZ2497777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62cdbdf1f411fc7840097478fde8d2e322c3411a040b50f315b3dd78e19cd2e0. 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/QM7282469445.