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 0xc643e975742a834547301696314e918af98effc5205ab1be1afdbcf81cc6e718. 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/428f2283-33cc-45cd-834e-2a3c7373bea2.json and https://artists.proofprofile.net/proofs/artist/428f2283-33cc-45cd-834e-2a3c7373bea2.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 0x69f0ec99ac12ea07b7e481795a2f5e6d44fb1296d8a3b1c878953b7df7d3352b. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/CNZ632301439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe8ee426f769bb9236599fa0abb2caca1be283493c903ceb6677260a8ce77678. 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/DGA082492030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3c0e805d7d85a072d4581b0edb36bc7d4a8c26ec8363bebfaec6cc794168781. 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/DGA052495661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0ce0c043f7ea9d193f1950ce27d20d740c131fd44e9819756a99f4059e4b31f. 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/DGA052463742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb81a2c80ab981e48dea7c12832e672965b9dde745f8ade64dcdd816a4864ac7a. 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/FRX872410947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd98657e6360ffd488d431a8d0357f75848f552c153f88fbd5cb4f1d84937531. 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/FRX452445460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x166f54fe7a689c61aeb6e01a1ca01e5f4dd6f371908516a8331a34b6736be228. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/FRX282416282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5b8f4eaf07517ad9d07468b88b42b916b39f208d11482abe4e2c505ad4aa57b. 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/DGA052392112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0167b763714fced4923dfe773218944456a351218030bf143504eb67cadc8399. 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/FRX872369948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfad3331f6e91b4cc3ab8dbac2d08cdc21cac6d7c3764c6d9bcf8e892695b2c21. 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/QZZ972319299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ebc57218389ba1546a832adbd6e92dcb60cd2b5e220e874a2a423722f3c8380. 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/FR96X2312397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b43c8bbe798be79ee7284451106a8a73cdfdd215de3c4b97ad10778a316c13a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR10S2344610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f38021f2e4062ac086d58c0a4d82cf2b8825aae475b5f6928ad339d7c5b0fc4. 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/FRX762234171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbea0cd24f2b3ed021810ec344cf2aac6281333831c86cec5e4eb8c4db9ef8c7b. 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/FRX452244426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x861a32f3b518e23671db8cd2f5dc96bddac20d7ae94d44fbc813b18299b82cca. 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/HKC371889669.