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 0x705d3a94af63ca32fd4fc52cfb20f886e0e0aeae6d9636312f2d8ee80a6026fe. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9d4ce799-5e80-4a3a-9704-df0f1efd423e.json and https://artists.proofprofile.net/proofs/artist/9d4ce799-5e80-4a3a-9704-df0f1efd423e.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 0x229ce64b9a73ba60f9569f6066c826b6f467ff542ed721384e1c8f4ef8f1406b. 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/BEF092102000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf13ba4ef392dfab6014fba0e13e2c0b48ab7c6a4b14fcb6e845a05b071670821. 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/BEF092102001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x966f6e2006a4296412065d113ded44f9db806d91ee8dab35ec619846df6f9a0b. 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/BEF092102002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f3507abd9a3f99803d748cf10b124d16223408299fa1f0b84b1a9d3bbd0562c. 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/BEF092102003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b5a6b0c1c10e1817bd620a658ee0836456b7f61ac4459229bbf92f783bf6f14. 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/BEF092102008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ffeadb16c7a9817c0bcc46a485a7ef5a8b5a41ccf9bc85101d497a20072cd24. 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/BEF091906000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1607859a048df056c297d6357775c45ffee9903d9b05c95eb33824b7ae63872d. 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/BEF091906010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d28cd68e8149026d8dda7a8d35744b974e48e2c32f4aaabddc0cb271f5163f8. 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/BEF091906020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55d44cf549246c0f348b7254822282e32af227c00fb1bafaf7569fe2586fb6db. 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/BEF091906030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb048508cb0e918eda5093ce00bcd921c840e229810509a5c08c68440b760b22. 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/BEF091906040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49114214da6c60ec8938c1d01a8f6a0bfa7fb054b894784391e7e1d8f88c3ee7. 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/BEF091906050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x457f9c12e678411cfb8b278d4b3ce8ab4997d3b1c878a896e7de1831316e3e03. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/BEF091600600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11c883e257bbd296a308b70ef77ff66f821641b8b5668530fcb441a2411ff034. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/BEF091600602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62f310007e17b7426453c9e8be00327790c4c855a28a8b5ae7df916d3652b3af. 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/BEF091600603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabab431147f8a58fd5f53c2b8155cfb3e7affb8e3b1ec9f6d33f12a5755b1033. 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/BEF091600608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ffeadb16c7a9817c0bcc46a485a7ef5a8b5a41ccf9bc85101d497a20072cd24. 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/BEF091906000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e2331dd9f2a2e9183657dcba4610afa83b76db99d1e474c948511b86e1e5391. 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/QM2PV1504264.