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 0xf84606d654a67953594d39615a750049ab785150efbb54a9dc2c4f47a0e5a5ef. 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/3f04bded-3013-458d-8164-181bb7025c4d.json and https://artists.proofprofile.net/proofs/artist/3f04bded-3013-458d-8164-181bb7025c4d.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 0x5caf1a144293491ca9aa4cb2f093b540d5c91929c989f7e9754afe39f6b36323. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/ITL771301565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c13f7928006da49ad14bf06500b7695ce069737af25b8140a1e044fa1241ddf. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/ITL771301569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa09581b1f2088ccc8f281b503551991aca356ad215c09f83c3b878a54c009a6. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/ITL771301571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x631244c2ebe9ff2c550202982e404bff4b56979eb5ad8870c4bde79284a8c300. 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/ITL771301572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9cd76a584697216f1bbdc1412d66a37b8f6988473249e89772c903955110063. 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/ITDY31500073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccfadd1d14198c8731bcdd8b30107a2eeb0e34ede1bea0efcf21dcf8005c72e5. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/ITDY31500074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a304617a14a4eff893136f27b7192b7debac8384197aa69ad92cc9e627fad4b. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/ITDY32200055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e39e9300196f24981cfd11484a707d5ae8930481d8223c8e769e9f91ac0b1e4. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/ITDY32000035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8abab27db115efdc6bb4e80ba47daa8ed1aa56551911ee2d3523edef2d75f712. Chain 2 (Bitcoin): anchored in block 960191 (2026-07-30T01:51:26Z), 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/ITDY32000036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08bbdc5898fd5bdd52fa966b402809c91d2e8271ecf8404aa10c30782bcc21ac. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/ITDY32000037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b3464d4aa6b8d027eac6cd787465861a9638346b3165403b197a1396e47a5b1. 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/ITDY32000038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0de40cce4026be61dfc98af94b8b5d35e4452f0d72881bff45f09a6670cc70c. 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/ITDY32000039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46f407e6c3f228f675e6bcd56fcbf94837412a1e2f3618c27fc32706d6a17cd1. 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/ITDY32000040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc519704c6206dfe7a4bd777bb7f11b2bfc4c936c31391cf5cf3aa45de7b0fb9d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ITDY32000041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ba5f36e969ca2d45ddc1ebe15bf160be555e65263647b1c1b29428e4ef9161d. 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/ITDY32000042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0143d0e81424394c1903e1cf7a5926da9b7f88040edeea8f614cfbeeb445bf3e. 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/ITDY32000043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafa7aa4a316f6f5b4db3c8aae494155681c31536cdeeff4ef2ff8295ece3736b. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/ITDY32000044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85b68b87973ead4215c5db8e56f0282ebda9da29d1281820347cef496fc8da2b. 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/ITDY32000045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5281e9d6b6fc661489d9e9c8c88121bfcbf7d061571ee64847006e25d5c38176. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/ITDY32000046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ebc31724b60f0a4a32208f98e0816a768cecceaf7946afaec5850cf82879ad1. 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/ITDY32000047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2652ed462a7bd69921ecd866d0adf2ea269d93eee96ceeeaaddf30e047804e7. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/ITDY32000048.
Quanto ti voglio (Jà sei namorar / Italian Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72f4d5ae79bfa62101dc841908c0b22844116d3a2c610dbfdd431cd859d9a765. 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/ITDY31800022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f1e9c4612799bd56d3ac61afd59fb84a324f39afd3878405e8e9f77d11e17a0. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/FR12Q1500797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb82299e7a28ef5d654a9786074cd126d100140d7281ad72b7ce1225215cc8cfd. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/FR96X2138633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23a30563a52d9e673eb81fd13a033b4f50b927183a2f8933eea1aa832f7eeba2. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/ITO0P2000160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb2648a2df373a885fdce048ad9a1c45a36f5c0375ad77e7f962ad7a7deb2241. 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/DEH841800214.