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 0xf5b81208d6e4d1c6acd2edcb67e09ea09b6bcda2ba376cc90553ed8b8c0a955e. Chain 2 (Bitcoin): anchored in block 953707 (2026-06-14T23:22:21Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7c3afd5c-bba9-42e1-9cee-c030ec8bb9bd.json and https://artists.proofprofile.net/proofs/artist/7c3afd5c-bba9-42e1-9cee-c030ec8bb9bd.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 0xe305b00d73beb9e947c51c921d3b6c567ae6cdd843807c829f6ddac1a8295f7e. 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/TCAGZ2395193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e31c08d2c4a11cb7d9c966c354ddfad03f723e85ea29e839dc0dafd01718450. 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/TCAGZ2395254.
Manifesto of Henryisms (Community Music, Vol. 3)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55597ec272a8b8a51d61fd4a8f506556b78a6ccff1f418b963372dc7eca60cab. 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/USME32100617.
Good Time Music (Community Music, Vol. 2)
Steven Bernstein's Millennial Territory Orchestra
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7d9feddf9d9e570dbd90d4ec80fe1390dd1899afbcc72fa1317d9801174db5f. 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/USME32100610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88662ed6247949d32a87e8937f9f0c35b5d97acb2cf4b782e529c0c82e65aaba. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/USME32100611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4ab00e7d4443f4dc9cc0e9d7a4605fa82bbbc9c7830723337b2faaa9585e782. 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/USME32100615.
Tinctures In Time (Community Music, Vol. 1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeca9196eb755860f22555c522c1f2cd0775ae5bf7bbabf694852ab26fadb6060. 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/USME32100147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fb697643163321519df02839d7e0c9ce9085c28bb69fbc974377f0e5166a8c7. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZ7C41700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69102cedadc4be090866a7a3afb9ce1afddbee60daab105e6208595c48677f08. 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/USME31100632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c31e20ff9c4d57fb67eb279134ee731b64668ab85eca695bb2bc4c30c71dae3. 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/QZ7C41700102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9c49dcf08c9aab71a3bbad6480e2ab557e7cf204f86807c847daa797cb1a6fb. 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/QZ7C41700103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x813277d91cfd1be0e5c3246893539a4131f6e2163e79b1abcdef85ebf716168f. 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/USCRW9913702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba276c7b3b78b3ed8449f09ad98105cecf40903ea55ac1e5d80f8216582fda30. 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/USCRW9913704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50026ab82d20bc07c51c01a3719da4130acfc225c6f6c2886fd09275361843ec. 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/USSM19704107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x242a88a4df7f98cf30fe3f71a1bb9139817d51d37f91b797c5aedbc22718fbb0. 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/USSM19704111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf713d89d3aad5cbd6ffedc91e769cf277cc0a8f285ff4717b89ad68055baefbe. 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/USSM19704116.
Popular Culture (Community Music, Vol. 4)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x299a92607c4e71d7a2d7d47d983e03dc4a0361f976fbb26b2e8877c54b6cf548. 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/USKUX2000311.
Newport Aperitif / Diminuendo & Crescendo in Blue
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55597ec272a8b8a51d61fd4a8f506556b78a6ccff1f418b963372dc7eca60cab. 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/USME32100617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88662ed6247949d32a87e8937f9f0c35b5d97acb2cf4b782e529c0c82e65aaba. 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/USME32100611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x681fa8dd4c2ca14ae05f355e9c1f9c52a849c321fae21c25e696af461e53c617. 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/USHLU0700001.