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 0x3633280b25256d3a64b11147041f0f76a68a1dadac0852eec75e1a826397f327. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4ef49905-32db-4d23-9408-1b7c702dfa98.json and https://artists.proofprofile.net/proofs/artist/4ef49905-32db-4d23-9408-1b7c702dfa98.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 0xe1f484cfa789d560e7569214a64ffc287cb43979e0fc37ea08fed2bfda4ef16a. 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/IENSV2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec6631371307cb8411d6815b19d664314849df0008fe6430c2c7c4cc6b02dbaa. 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/IENSV2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12ea168ba413726913458a984c3f4d9cc24ae74bdb658f7c874eee1411240040. 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/IENSV2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1f849ae1649e1fdc8928345aa45ed8affb41c6ffac17908d855294d25534490. 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/IENSV2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa09ecdeab3d3250d382163cd6328403f4ef9c091b79b5dcf809a36c89e5a902d. 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/IENSV2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x461decc34f2e6c9854b396ba3323e8ec82a4b197eaadfdb657c0f7acdc70af90. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/IENSV2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d20bfb0c51a9e79bb683caf4657804d90265a9d324833a926129fc2df9f2743. 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/IENSV2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5c72971b2dc31054494c9a9d9870ec77ce92f310fcf905ae85bb882708def8a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/IENSV2300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e2644a6772c6cf922be8be86819a8638ff723a219dfc53bb49793c3fafa2c16. 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/IENSV2300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52c85de38a7bd0a026bb8db563f0ed2d9bfb33433adcc2a4454dd7ad7eef835b. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/IENSV2300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe93c2e3ad64cd6c86084d8ad1c174cf5f35988a6126e887f59a0e60cbacd63c0. 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/QZBRF1839627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e7355dded613d96904d8b6d9303d360551c583b67a44999bf6786251403b19b. 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/QZBRF1839630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2586321ef666a107e06e9fca96d45809617586fc133d7aad29d9cd8a3fa8313c. 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/QZBRF1839631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf43a8fee38c56c717e37ca113de2bb233504de65f8bda000af35d8adb3869dc. 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/QZBRF1839633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x757e064eaecfcc3350c8538b80abf07e485abc28d78678dba117a97a9f8f0139. 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/QZBRF1839635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25a394660f51fe3ddbd231cf4f1f6f220d81eef1fe11a951724e01b8bae6225e. 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/QZBRF1839636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fd867c33dd55a7eb17784c1d3d9bdb3607de0e84e218e71a85f9aafbf0beb27. 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/QZBRF1839637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10b037b0a3d4a2882a4135cbd5011a90afa53710d3630421e5d5ef2d4385f2c6. 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/QZBRF1839638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x461decc34f2e6c9854b396ba3323e8ec82a4b197eaadfdb657c0f7acdc70af90. 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/IENSV2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1f849ae1649e1fdc8928345aa45ed8affb41c6ffac17908d855294d25534490. 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/IENSV2300004.