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 0x68cb8c7254c730b8bc1678f1fe0ff58302dc5c198630acf3b9393dc9f952f382. 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/9b2337d7-dafe-4cf8-8bfb-f69e2fee966e.json and https://artists.proofprofile.net/proofs/artist/9b2337d7-dafe-4cf8-8bfb-f69e2fee966e.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 0x01f6aa7a5e14dbab88a82af89b36d2dbdd1e283dc2039f23984225b3a6c88969. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QZHNC2236031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26ff63f737449cb702b8333f40c198484c6cd7e832a256c244046734a551105b. 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/QZHNC2237789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4ca3a5c807cc182ac3553db046425a28d75a5022369f9595f84fb8921f89beb. 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/QZHNC2237748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeeea5440328ac8061382e5d483e8150bcd4ce80c47977058d99e8c608dc9197. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZHNC2237749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaafbbc27096a879c0e45baf6c2b7cfb298df280e34a570f6263a6a0aaf53a4b0. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/QZHNC2213536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe735819b03c3431019eda061b8efabc5fccabf570c841d6a527e5b50481eb67d. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T03:46:32Z), 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/QZHNC2237770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbdedf40848dc509e24269e98505dc8e5c763edaa2d5a8fe4a413aa2a223387a. 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/QZNWZ2234594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ba94d7dec327292a8f4c404a5251d4ce0d0b98674b62412010188d80a08e6d2. 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/QZDA52304986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee3086dc48a2cfa5d8fbd6a4d69e2ef44a543e889e0edb1b9de53db4f4ad2579. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZDA52304988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaa2c022bae966d8ecddd58d793eafd49128d5443adf139ae42590d7d8f4988b. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZNWQ2350678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd265e34eda022b0a18e98f1fbc87e3b4ff6207366c4c0b2135286f88a28c4fbc. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:55:24Z), 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/QZNWQ2350679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdd23c8a863ed4ca785cf329a37efceeeeb4d61dd543b44bd3c92abafc9dd0fa. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZNWQ2350680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab98f6b1b69427ffa508368739920ed26916953fd742d3b8951d31309a3cdec9. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZNWQ2350682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c98880a5474353f5d8a902f7ba6ba3f85540f3b5a89372693c5890954e1bcdd. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/QZTB62368220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2144aca5f46b0e0dcbc58ba4e56a98def3b848318c4616de428755a13118e0d1. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T13:49:32Z), 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/QZTB62368221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04d8c9204a56799d83c983f7d9285e55630ce286160f204ef737b828cc3f6bb0. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:52:31Z), 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/QZTB62368222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x007fbc1c2736c8aaf7aa4e69597405aa3dcee7ec0f7069124c0630f1347e27d6. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:19:58Z), 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/USX9P2457573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd2ae05a8d851557985a096040ad804548d34dcc7d8ad9bd31e82384374db4df. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USX9P2457574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4969e931f3bdccca3771710dbb756fdb85d0804ba6e737efc9ee9ca188726c70. 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/USX9P2457575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba76c4a0de22892464e096bde0e9eea37d84996f6aa1bb73a6dee05e642ef771. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:19:36Z), 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/USCGJ2584372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f30ac0e47e5c65b52c9f4b0001b18735e97f1e39dfb57bd1aefced25072f3d5. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/USCGJ2584373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9b1f9d8a04ddd5e845fcad0efb93d43ff717347b60173cf245ff8da26d3a764. 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/USCGJ2584374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69e033d3e57ae9775fa8bb914e48bea73248c9a19959f8f7ee42bba330db8191. 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/USCGJ2584375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f2462b3d3edfe48177cbcb4e791252bbf66a03b56fcff8ee7ef19c391c7955d. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/USX9P2584740.