1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xf8b1af4c7513156275a72abb55afdc2f46b783539f48fc23472dbe1b5e876a1a. Chain 2 (Bitcoin): anchored in block 954058 (2026-06-17T06:34:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/452fbf27-1ce4-4c36-9462-0fdaa0cd7952.json and https://artists.proofprofile.net/proofs/artist/452fbf27-1ce4-4c36-9462-0fdaa0cd7952.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 → block OTSBitcoinBlock must exist at that height 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 0x49a190750cfe837c08aa74c3cf61b1b4a2c25c2c1394386e6eaa772e13937e26. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/CH6542444910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5069257ae2ebfcd736abcf337dd04b633bb55ac223086160f951f4f95f21eef. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/CH6542444913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc48bc9bceaaf1a9fccec815c11cd63f0da804f983bddf16ee7da63f08b92e0f7. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/CH6542444916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a998f54a3b0d159100ceaf864f82dc045762dbfe4a1bc8b0667699996647236. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/CH6541968834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2b7e529d6c0135e9515e3e709baa03ad9c5a2679c6d1f255456b069aed7f7a2. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/CH6541968837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1af9995688f9812ca6c1028a9c4c484f0d4fe23f823bf54a5dd786d5ebebaa1d. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/CH6541968839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x793f5423f149e54ff09374922f95d0d45b609fc9a4063bfcee38e657f711b117. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/CH6541968840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a5d4509d7eef593d45cc91fd766c6bccae5543d69b08d25299ba61184d75999. 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/CH6542053209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x887f00bf3ea3f77d907e8c68bdc70a0916ce98f27978796dcc20e7d718c7c3ee. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/CH6542053208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ac4b7ce8612404477f7ab85d32753c90031785f10641b4b47b159fd3b80fca6. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CH6542053187.
Picture Puzzle Pattern Door (Compiled by Rami & Phil)