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 0x093df0f075dffa29c02ee051753fd38cf262583312f5edfa429a2acd4cd3358a. 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/83aebb2e-2d65-47ef-b842-153c30853a07.json and https://artists.proofprofile.net/proofs/artist/83aebb2e-2d65-47ef-b842-153c30853a07.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 0x731c861246260ed565fbce9b022791b58b9625178b24f83341772285bad3bbe2. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZK6Q2497550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0e33a5849d1e82b8eaf6945e9e1283d1fa2ca725aee1f04d141301855329c3e. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:02:55Z), 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/QZK6N2495159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb85ac91898e5d634e374f23d148579866312cba1d3fa1e9437267ab2a738f4e. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/QZK6J2441631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94daa24389c2f80a9f30f7f7dcfe6c192233a3edbc836132d2d68c5e4e227c22. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZK6J2441632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bdc3046771b38dcfcb0c7858f474f3fe04076b618fa2ecfe09793a1c4c3787c. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:30:26Z), 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/QZK6J2441635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa96d154cf330dce534f67bd79d654955c8e595a2ca2eeeb0930ae0c568c8ab27. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/QZK6J2441636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5715841f3280b3bda7fc469cc7f0f3fa7912cb469a232fee2921d1e5c7d3cf98. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/QZK6J2441637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b37070fb01a681b9afe6b15b40630e3bebf8563c61e5ce41b2f895cd77829dd. Chain 2 (Bitcoin): anchored in block 957767 (2026-07-12T22:25:13Z), 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/QZK6H2484173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26b70e6d8b01be785a484e4d5bc6f4a11d45d1ca949f2915f04f25945d66a601. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:55:03Z), 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/QZNWQ2405518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0e33a5849d1e82b8eaf6945e9e1283d1fa2ca725aee1f04d141301855329c3e. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZK6N2495159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x731c861246260ed565fbce9b022791b58b9625178b24f83341772285bad3bbe2. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZK6Q2497550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccb6ec5374762f13b666a55bc8c5c05c2a3c28f5e50f6184d38d1b8f098aa0c2. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZK6N2476318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c047109d08f7a0c85d1be72194d921573dc619c4d9bddd960a946405e49d1dd. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZK6N2495252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x943147ee791430d21840ff621d305ce16aa268960937caf96d50c81b1662664f. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZPLS2436290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3847d91ff3594bfd2523e72f1db3925ed563b9f8f607b07fab78d76a0ca8b013. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:43:51Z), 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/QZPLS2436291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0d47bb1fe9cdc2090047317af3dd247d826b144f74b458f11f0d0fc6c14a10c. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/QZPLS2436292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc8dd72163e66dadd893d639cba4268a57ac03180a14e94b40ab0ff9f8b1285c. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/QZPLS2436293.
La Normale Giornata Faticosa Con La Classe 6e
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd936d91fe87f0711ff88f4391db1fe21fccd7e89972740d113344342e5b719c3. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZPLS2436295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35df8bcbcc64176b4e87ebca6719ec3bc7c85f8ff29c7405b099c3d5f7e72134. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QZPLS2436296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3a6e347d8cf1544a013616f973bbfc16da269782ceea2e7b4a95fa8520d79e2. 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/QZTBD2451414.