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 0xf268bb8cee3e25e84d29265224463a245fc54bbcc10c10532ea6ba5704b3c8b8. 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/4b209189-2479-47f3-b6b9-a91e77d33782.json and https://artists.proofprofile.net/proofs/artist/4b209189-2479-47f3-b6b9-a91e77d33782.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 0x2932d07e151a367f70341e4bec45e87e4bd41352d27c78d2903ea9bc26800f6a. 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/FR6V82220214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde5c54620894245e6f85bb7f0fed3bafdb1423db16166a9a283f02937ee95319. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/FR6V82191699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6d5cd01df8c5cbf796c2b7aa308d6bdbcff57214ad17350c673b02df5f8e606. 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/FR6V82191700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6983dfd483c1b8f43b11f9622a4d374bc05d25966a11eed01887d0390176658. 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/QM4TX1772640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x761cc23e5a0e99d93d569c4b04a9977bb9b5049a9e8079b48c7dfc17b7d186fd. 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/QM4TX1772641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47ec461ad9909407873d8450c240bdbc7af35f730ce666bec9295a0ec1dc1675. 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/QM4TX1772642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f142c7e85c846d4d5a300c254e4b4abc97b473b9b3b305e980ad85d5200a635. 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/QM4TX1772643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0c1aa21f817f4d2223170840beb03936fcbaedd249467c15f8395aceaf6ef1f. 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/QM4TX1772644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc574673c0ee69c058394a35cee76b22d6bef977cacd2d0accaeea7aa97923fcd. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QM4TX1772648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf37e968b21d0c53718b8819fd4c54d2b7b2497224260fc93790d64b8f7aa5f7b. 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/QM4TX1772649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ffd65ff795b062016e90e7f9c59c1f24dfe3f579c5599f914ac4255bfa5339b. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QM6P42128698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4515eadb3322d887ae2325d64beeb222e0cc0f51acef3afb986717979937b10. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ES31E2413626.