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 0x98b27f5ba266541effc4e462266ef45443f487fd231e5095d9856eb55bd9d816. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3d2350fe-b2cc-406a-8286-35ec87473dfc.json and https://artists.proofprofile.net/proofs/artist/3d2350fe-b2cc-406a-8286-35ec87473dfc.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 0xecc4f2d22125c541932fead4e068c49441edb2dafdc0fe2e20fa62a89f0fc3b0. 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/BX2MW2200022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7227eda5c048de7a02b06c24d9db0b903d570f969c2cce185deb5dfac38c8a3c. 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/BX2MW2200035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabf493f35d3a5ef56a23a614d8df17c20a345e60547f228f356c72f95576f9bf. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/BX2MW2200043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb133755e2cd9fd8a4a9ff63793b7f372b79551c194a4d907227c4031d9ddf3c9. 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/BX2MW2200044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5592f911d5bdcad4bbc588432fa1d579cd11225db8387787adf7cc19737f7454. 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/BX2MW2200046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x412b6b1990d9c11602eb1a4dd69d94d9b725b0d5f5c57c08cf6081d8b4e0567b. 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/BX2MW2200040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fb69fae1371fc49f29ee34ba6b22967692d7f054d7b044d95e58e73ff557619. 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/BX2MW2200036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7227eda5c048de7a02b06c24d9db0b903d570f969c2cce185deb5dfac38c8a3c. 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/BX2MW2200035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25ec30d4caad450a86df0f535852585318e56cdb4a31663ef61fff7e42574d6c. 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/BX2MW2200037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5592f911d5bdcad4bbc588432fa1d579cd11225db8387787adf7cc19737f7454. 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/BX2MW2200046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabf493f35d3a5ef56a23a614d8df17c20a345e60547f228f356c72f95576f9bf. 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/BX2MW2200043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba63053ff2cecd427efa67e91e8e0361419eef8fb111660550a7cda9a8590108. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/BX2MW2200039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0139ca2e8678d7744e0181ceadd79467611d0fc20e01e22742cf82e654ed5d2b. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/BX2MW2200041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecc4f2d22125c541932fead4e068c49441edb2dafdc0fe2e20fa62a89f0fc3b0. 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/BX2MW2200022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x412b6b1990d9c11602eb1a4dd69d94d9b725b0d5f5c57c08cf6081d8b4e0567b. 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/BX2MW2200040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c31186435c10bb68f2426deabf1b2e7736d1071fcc5c82406f47b979ce3e596. 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/BX2MW2200047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb133755e2cd9fd8a4a9ff63793b7f372b79551c194a4d907227c4031d9ddf3c9. 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/BX2MW2200044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecc4f2d22125c541932fead4e068c49441edb2dafdc0fe2e20fa62a89f0fc3b0. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/BX2MW2200022.