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 0xfeea9270a715d23a735e92fe895888cf5c9542f1e6dae198e04c5a18624a2bed. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b50523dd-23bd-418e-8bc3-12311c5ecbdc.json and https://artists.proofprofile.net/proofs/artist/b50523dd-23bd-418e-8bc3-12311c5ecbdc.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 0xbd5b41a30808e3fac7c31769b545a095205180bba1542d584d66868a60cd075f. 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/CAX1M2310003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd60c3509cee9034bfb6fef2eaede0a78d1fc21be850860d7e9d31440fbc02806. 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/CAX1M2310001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe610a25f64f0901c7b4bf44ca99dbfde3ded4e639026fa7fd9232656b6890a89. 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/USA2P2229836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2516a736e4f07209e87505953582cd6bb8e8ee70f8391697c3f2c874f08ff5e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USA2P2116656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x170d45a0469aa5b253e666d46d0b6b6960e77fff33800f7dac1c017608dc176f. 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/CAX1M2110005.
THE SUN & THE SEA - Instrumental Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x602181e07f8f295955cc5704d2faa05a912b6c9e45fd428b1b24b7e66b2b6f39. 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/AUCJI2200328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcf9cbb06a0e2ec36a89ac7487523fe146b996a43f5d8c291a7477feb483b723. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/AUCJI2200293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcf9cbb06a0e2ec36a89ac7487523fe146b996a43f5d8c291a7477feb483b723. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/AUCJI2200293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe610a25f64f0901c7b4bf44ca99dbfde3ded4e639026fa7fd9232656b6890a89. 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/USA2P2229836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2516a736e4f07209e87505953582cd6bb8e8ee70f8391697c3f2c874f08ff5e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USA2P2116656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6205e2cf39d0503bd684d7da38921c992a8f3f3d8d00fb465ae58473892041a2. 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/USZXT2350912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd6aabecdef221f0c8b8369af61305c528f440459eaa344cc815955a0f294d92. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/CA9EP2000001.
Things Were Never Good If They're Not Good Now
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f8c9ae269ecca2219eeaee9c95182e6c44482e2919d8e4f827aec96e01eb128. 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/CAX1M2310004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef407fe3bddabf11f040b3ae61369391e1f5118796b555d8ac41b5e074511757. 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/CAX1M2310007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e378d68d3bb780ac38e29ada9ff6dea627c2d1a1d4ac4c8e7defe36e649b3e1. 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/CAX1M2310008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44ac980f3674fbd85bdc57b046a3acdde0d293750df231ad5b92afe1cd38b0ed. 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/CAX1M2310009.