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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd7eb067041795ad865d1a0372dbd1c3fc50359491683821b792111ca2bcde67. Chain 2 (Bitcoin): anchored in block 953633 (2026-06-14T12:47:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/322bfcf3-5b2f-42e3-976f-6cf39b6414a8.json and https://artists.proofprofile.net/proofs/artist/322bfcf3-5b2f-42e3-976f-6cf39b6414a8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Nothing More (Rudy's Midnight Machine Mixes)
Sunday Afternoons 2.0 (Rudy's Midnight Machine Mix)
Sunday Afternoons 2.0 - Rudy's Midnight Machine Mix
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9daf3fd3a998d8fd1550099ecd409bdcfa12580a44d40f1ec5dfd32569a6b598. 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/USEY52000605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba7aa757d24dafd4102944615e96f93e51e85c0ff1da573fad203ccab04f2762. 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/GB3DD1900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x540d1a5850318e2cab4b7af7aa8c85358a5b66b498390ad6ed8a593b127e860f. 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/GB3DD1900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ddfc04d32fd79bff8cbc1ff24b3c98199b38b5f513d377e494a3c9e0382c34b. 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/GB3DD1900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f49b029baa664cd276a06910f6ea0826b728aea7b15b02c84a25139d8704f1c. 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/GB3DD1900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6868bd46736817ab56d44ed04c78c92607f4a97ae2da1408c8ac6cabb8c3a0d2. 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/GB3DD1900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6727ded1da97821f46738a1ddbc6d25c222b11ebc617660fab6b66277c27ac8. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/GB3DD1700210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a16c29ea7ace951544691829267ba79794d03323be8f9c8b78b994d182642cf. 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/GB3DD1700212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x289b6555708be5b1a99931bb2e37d89185d584aac20ee8cf8ecc2685e166f39c. 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/GB3DD1600189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea7278d1756d7299b0296c95f50c8d5e05ded27fbd08db752f439111506c324b. 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/GB3DD1600191.