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 0x47a1c55276e5e41851b73f4047f92d6c6908859a4a6eedb4ae43711755269a52. 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/f250b783-7484-4ef7-bf27-f94ef4164dfe.json and https://artists.proofprofile.net/proofs/artist/f250b783-7484-4ef7-bf27-f94ef4164dfe.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 0x32b874f4f077e42a83723ada8fa7df4a42c83032d46370da6c2c707c543e44d1. 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/IEPNH2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfada046491595d95a7823b9547e703f6c72173a274327f2ef1ccdf072761fe80. 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/USKHG2021191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc940b604590ec2dd74fba0069d16dc5f5906f910c3c59c8c131f93c667c9cbb. 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/TCADX1883217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee013bb74da3c23f4edf3e7a9bfb1089aecc4e254d47fce908d01afb761f79c7. 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/IELRO2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x999b890f16d3ff5ff10d844a6114cb8f51f693e9f692d2341e1252f4194cfa3d. 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/USKHG2021171.
Kiss the Earth (La Luna) [Live in Ludwigsburg]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x999b890f16d3ff5ff10d844a6114cb8f51f693e9f692d2341e1252f4194cfa3d. 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/USKHG2021171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x999b890f16d3ff5ff10d844a6114cb8f51f693e9f692d2341e1252f4194cfa3d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-22T00:52:18Z), 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/USKHG2021171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x999b890f16d3ff5ff10d844a6114cb8f51f693e9f692d2341e1252f4194cfa3d. 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/USKHG2021171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32b874f4f077e42a83723ada8fa7df4a42c83032d46370da6c2c707c543e44d1. 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/IEPNH2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68582a8eb420beadbbda7bd11bdfc0ca7eaffdb684923e691778b1cd6efe2353. Chain 2 (Bitcoin): anchored in block 960223 (2026-07-30T07:51:46Z), 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/IELRO2400006.
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
Fíor Flathemon / True Lord (Act 3 Scene 4)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc101cce7838da766bc5007bf760884b7b62db419ff54e591140e74bac6a5340. 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/IELRO2400020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5232bc739629c541dca8f415ee0f8521d18b058fa24c367f05f817729ed8e6f8. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/IELRO2400021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce0eda7beeb2d33ea2ece8cc09ca78f7702048c9b903565248c823234ac70838. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/IELRO2400024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09f7bac6bab49d916f31e05f7916c83cd3fa4bb4e302d424f0c1e89f828a37fe. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/IELRO2400025.