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 0x2e195d21977316ead0c73ef11c500a463ae6dd8f1385eda25fb949e1351d3423. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/69584247-ed25-4ca6-94e9-e8ecda54aa55.json and https://artists.proofprofile.net/proofs/artist/69584247-ed25-4ca6-94e9-e8ecda54aa55.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 0x049ea244864b751b462b1439f5b8c5b0d74228daaf067bfe8c89540129a181fa. 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/ES8242071105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ab9c524e909fe7b87888fb0c223414b1f186a6d5fe8cd7826dda3dc7e5e68f0. 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/ES8242071102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9743f32598a16e155d4623ad0121cd7ba543ae1c1ce06ae4c9247f2116b44cb0. 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/ES8242071101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00d834d3a6564ff4b4f346ca965ec8af18029dd7f8e8167ee1aadb1ea9a381ec. 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/ES8242071107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a0a6edd30d2c14fecd512bdb7be4a0c97c0663a9bfa3d538da7dc728c9672be. 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/ES8242071110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00d834d3a6564ff4b4f346ca965ec8af18029dd7f8e8167ee1aadb1ea9a381ec. 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/ES8242071107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37303610b8f73676d47ed952806067d1cde257e21ac14b5e4cc3db3dc5ca5e33. 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/ES8242388504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2eccc01f94eb4d6a1f5cf203ea3f8d98aaedbe1d00448e9b52526e846f0039c. 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/ES8242388501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6aae1fc93fdf83df6d35d2072ce6e1c9a057baf0195c3d013c9c84751266471. 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/ES8242388502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd27ebd703fbad09bce7fbbeaa064f03fad924089432c76bbc273994a193f05a. 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/ES8242388507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5ab61d3b5fd88eed8bce05b48e280ab75a740d13114e8dec316c3820615aa50. 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/ES8242388508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x235ac48d4bb4b9fe53a693614c6f1dd98fda92c0d703a51f0a0466efa5f3652d. 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/ES8242388503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x685a1c0a41b638c178ada0f93651bd0b0b47db7634e4dc3ac971b039dcc1f399. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/ES8242388505.