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 0xf4af43906924cfbea3fd4c9d3f9152516472f39ebc135c7825c77a0039b43c42. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f43e567e-52a3-4606-adb5-26195eeaa4a1.json and https://artists.proofprofile.net/proofs/artist/f43e567e-52a3-4606-adb5-26195eeaa4a1.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 0xdbbe1aa43e28548b4121904e32d625d218758676a06a62d14e01a24c171a74f1. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BEAN41400101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3b3695253e9faf357d4325b455c5609b50c689a4120ad3c46898fb07e4b104a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BEAN41400102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d4e187e78a2ca7e4b206957fda7d9bbc16a7b85e6ac0e511b0d29867102f167. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BEAN41400103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x536d2d6565b539d9ef125bfa170ad5cbe95cf30f62b5d79ad2d3c92db0e567c4. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BEAN41400104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9450bf97d3465f99946b277f438ecb6e4c5ad6b4c14206af986fa3647daff4ef. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BEAN41400105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa10a4078c1ade30ce75a6191b842757e125593a166a2c79f934c26c71a189b95. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BEAN41400106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a4f92aee52d4ecafa60621d775d3da72ef6a36ebb01dea1c8d53513ecd0a08e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BEAN41400107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe24d470bbc42ca98cbc47fe3f6c31312ed0f2c8879efeae0a0378cac7e2329e2. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BE27E1400840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a52cc6ecf9db63b8f0a1b6bfa1de288a98f04be564322006bc60dda5414e4a4. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BE27E1400850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f02d88a34db562b96549dad6cdcf2e24d59b83c4e0d95ace21ef8d9c7689cd3. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BE27E1400860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe228932d69dad496b3534de5c6e1c6b231ed2b3b31bfbbbfe7bc7c5f42c39177. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BE27E1400870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dcbc7d1d2fd6444634796f3e7ae67a46da45e70945b5755d48a81f150cbdc6f. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BE27E1400880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3045a2fd92c9f1c7cc31dc9d9caa578ef71706c5f87347fae585ce947ec695f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BE27E1400890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4c0749a17f00d7c0b7e059b8c45c0fdf786fb2202dc3b8c3dd161aac0825ac7. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BE27E1400900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16629d83c5ad127f1e54f101e9f01f8e078150c1c57c8cc06f65229f0c0954e4. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BE27E1400910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7422bd89418e13dc630293536eb45c16fccb83ecf8fe82bb8c3961dce547d53d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BE27E1400920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x579d7e1bde9ba60cba8cee1fcd0b12a672df9f76a7488970c366b51565699648. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BE27E1400930.