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 0xb5d69a1c71885064c53fa1e65acee5cd55af3d71b9c1db8dbb12416b984a5f6a. 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/bd6ca446-3d42-40e5-8d57-256dc0eec7f8.json and https://artists.proofprofile.net/proofs/artist/bd6ca446-3d42-40e5-8d57-256dc0eec7f8.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 0x362a56030da880f49dd00f92593e5ebe3522f7280240714b2b6cbb8731bf0a2d. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/TCAHN2322806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f531d74cacaaeb32cf3fa0a85cc8b8d6bae5042a8024bd910f092eb5e5ef70d. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/TCAHN2322815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x701cc5251823dbcd848a027ebae671c574653c8b4e2f53f7bbec696ee2082d01. 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/TCAHN2322823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aa581812d4307c3adae28ae7a3554e133cb4efa30844131fafd13508715609d. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-20T12:10:01Z), 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/TCAHN2322837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe204a7bf5655cd3ba11921ec296b1a8eb0218fe957822aacbde642f37c0d03b3. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:46:36Z), 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/TCAHN2322838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81d76f0ce444bd8052f4aca87b93336c910a377b1e7f7ecf5f24107a1062cfe5. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/TCAHN2322843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddab982d652fcc7f6dfa95cd5aeb61b7c4436c9496559401f63183943651d9bf. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:42:29Z), 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/TCAHN2322849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04130d32129a6eff4b995fe76249ba2d61356915d3a6c869889a5eeae9915d51. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:04:22Z), 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/TCAHN2322856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce62013cae2c7c4b374715d4dd2ad156b158cc4f322d070d6049098aa6a4638d. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/TCAHN2322858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd99c47b1d6403465607f2aa90743e7a2a5ea4337f32aee75ed98ab1acd6f64c. 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/TCAHN2322865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f163da2372d22561c7f7ee4a9fdc4bf64fcc94efb872cfb72df23a5a142d0d8. 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/TCAHN2322867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfd292ebd633cf3a59eef5d3d0ee257094d03b6a716d368d61b04bc6fe05b8b2. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T15:01:38Z), 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/TCAHN2322868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad580ca40d37b04b2ddc6cf4c113f7b4dccb6d8d6c92139edd6eb0427bf845ec. 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/TCAHN2322869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d499bcaef664388fe05b3dd43a93afd7fcc21dcaf8feb9279051dcb7273dc43. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/TCAHN2322875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb7080b5dd3ef650b81662fbdc3cef2e8e4419e3e6fb6e02cf8f18c70cef44a8. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/TCAHN2322876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf21e1f966ead1c460c234e93315484f8c03d8f4799c9b26c347b351ac5f17891. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:33:15Z), 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/TCAHN2322883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe328b77abc847c5827975022aec07b181270f295a81f65bf1b112c9a3573c334. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/TCAHN2322888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07f1be273986c72b153a8836aab8bf97450f1e3e9e251b4e4953de5b82b9810b. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/TCAHN2322894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a0fae568a2fee84c7d3eaf7731e5b81763a2a9b6b9366d0ca5b33e1a241d651. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T13:57:19Z), 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/TCAHN2322899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb01c96910410f65e60d569e5c43afb13848236c63542a1cf69c9a91397b5da05. 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/TCAHN2322904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad31d41529d60dbe4dc2540ea90a4fbfbce198dccfff674e01b25fa41f603038. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T09:33:20Z), 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/TCAHN2322912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa109c5e0545c9dec6521f49a30cccff1d6ce175a3f5ec00fb4d7eb3ffa631515. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/TCAHN2322918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc82c778bcb956a3c68f6ef9206acbb1fba0c1cc04370dfe0ed7bebbe651b68b6. 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/TCAHN2322925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6475de960a6e4303decbfab0db849128a7ff1056410ce421aee6086bf11615cc. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:18:48Z), 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/TCAHN2322931.
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