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 0x0f9a0f58705868a88a373059b7815118e308a7a246a3a3202f71dbaef18987e0. 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/14744054-e134-4a73-b86f-d80eb12ddee2.json and https://artists.proofprofile.net/proofs/artist/14744054-e134-4a73-b86f-d80eb12ddee2.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 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 0x2ce5690b78d6b08f2eb819b8c39ca663b307f12f7ed85e3acad816eec7f48b8d. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/CA5KR2404559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b823e4df3357f30ca023505f6245d1b940843d57c84c273e2d7c6e5b1fceb7f. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/CA5KR2433042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b823e4df3357f30ca023505f6245d1b940843d57c84c273e2d7c6e5b1fceb7f. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/CA5KR2433042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x540e9d95be344050219b0bdbeb6cca4ed7bba76999332c78767e99e3c385af22. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), 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/CA5KR2441643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65f139313a38df0cef4cfd60c65d3a1659c47a5ce3cc21ccd223bd7e4d749373. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/CA5KR2443301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49a447a2d0e579d9a6e409ecab1972e29e2a8bd21cd186b30ebeba938495c70d. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/CA5KR2511183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1044a03dc2c5cd3a67e22fadc69937804a11bd14a64869cc9ba083140254efc5. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/CA5KR2512814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c270b8778ae1877f6b9b11ec4bca24052bd23b6d87733d045c584d9cf996ff7. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/CA5KR2514282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c8c2811c2db8156d899dfbd0420570d9359ca9088bf2c828691a9bd97fc1255. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/CA6D22400705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ce2b17fead23243d0a86f8dbb66f0bade9a3b6e592295aa5c19881087118687. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/QZVK62200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x593735a0d8e7761eb710b52e78ceecb05ab5506e38b081881a360840d3ce6d12. 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/QZ5FN2151083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c01e05b2ad9b0093b72aa23dea6b5abbe1489dab9f21b244b0753e25f926175. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), 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/QZF8N2055227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1071496023c6bbc88e9e7e4daac2c55f440948efa2f0b278a0a828786342015. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USA2P2457360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9cac6e64dc534c73bd2859923848a1ff48ffbff21535b8fe2ba11c2ccb14006. 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/QMUY42100198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41c36f271118f7056fde64f4c9097da3eeb6feee734649e2192226cceda5c517. 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/CA5KR2420258.
The Noodle Effect (Re-Heated) [3rd Course]