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 0x2c2a54fb6f3d788652900d5445e78cc14149a8eb84ae3873b4e139642cedcc6f. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fa0bc2dc-174a-4ec5-9af3-c426e3b85478.json and https://artists.proofprofile.net/proofs/artist/fa0bc2dc-174a-4ec5-9af3-c426e3b85478.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Anti Lock. Galf AC, Nairobi, Mistah Jordan (Prod. Traumatopia)
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 0x3488bde6e5b9ef62de4a88418cd01d938535cb51fd3fea8f9e09603ff9df7352. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BCB742500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bcf91451ac2c10ad6c8817e2feae1aa9d5d9330495d75cda1b7952fd6b648bc. 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/BCB742500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6bec2327214236695467949da38341822886283d10e4de87634a755da25a72e. 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/BCB742500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x233a6460fdf769476b5809566eab2032a5f03709b83de17eda83f4125ad2804a. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/US7VG2522850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2f9a0efc2822dd978d7643ca4df55043c872d0130b0e6938384b3c01c513491. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/BCB742500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3fd889f2a2d22e71f75c21f496cc1aeb63dbab97674e47e9563a289ff73fe96. 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/BCB742500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eec38096435cfd04d6596a132c8eaa766b9ff4f89d458ec76eb10aad3db3f74. 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/BCB742500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96fddddfb80dc8201d1139a013ace1eb726ace81bdd30623476343af006526b9. 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/BCB742500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09b75f2799d62c20a2fe7560a07ab9e4dd8562398bc63088d9d2d2a0111ba894. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/US7VG2522849.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9f99ef022ec56d49cd720b2295c249254edbd47eac873239f990b8cad9bd2cb. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/BCB742500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38f5d39fc436981a3dba76b3d71b9b8cb6bff31a502127f86c30f0a8f4721ffd. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/US7VG2522851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0616f33c29229977655022c500d4235f66df0dc71789ff4f29757a2a4208347. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BCNA52400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd06e4231a78217f57ec03f1df4cc1cd3ccd5010cb539cd8101ef148b9767a904. 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/QZTVM2372583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d5b49e677c5df35ed6eabfc0f1743e16576b128b41ca0c217b956517c098f4f. 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/QZTVM2372580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacef218f16c02ed2b9f2bfd54a85f77294f1618baac1e7e0306b4ea3f1b91252. 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/QZTVM2372584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2585aa356dba4b56db2ba1dedbb2e07e6e260aeec725dab686670e95a33d531. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T17:43:31Z), 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/QZTPX2322142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbe44f039bb9c5fbbce2811af9f8fae9572fd78ccf28eea8645aba7e5e0e90b0. 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/QZ5AB2290362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1e7da8d72836e1f8481ec06fbabac62ac1aee74b182c4c74da829ce56121ab8. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/QZTVM2372585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc705a5f2a29052b217e7f6f404d389bd77f159ae503da6a8995a948609616891. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/QZTVM2372581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd69fd671a55425a8fab0a0cca8ba6135f7244b863bf0765e1b9643cf652f824f. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/QZTVM2372579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cfeafc7737b6c30537e9026473b657943818a64e954387e853951d3a5e48fef. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/QZTVM2372582.