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 0x9113b655d2cd4bc373bc78faa7a40535481754ea22461a221a0f8c4329d361c7. 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/d9f367e2-4ec8-4ea9-9480-024ba3746711.json and https://artists.proofprofile.net/proofs/artist/d9f367e2-4ec8-4ea9-9480-024ba3746711.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 0xe6d124bb4129f154acdaca34bdbacc553b4391c401aa6b655388be3a2ca2c09c. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/FRZ367600003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cf0dc5db3ce61070fe30918e62bd8c4ec1462dad0f0285a1b57d3ba7212f05b. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/FRZ367700011.
A strada di l'avvene & Canti di a terra è di l'omi
Théâtre de la ville (Chants de Corse d'hier et d'aujourd'hui) [Live]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70b0807d8ec09f161cbb1eda19c703591475198c544b0bda9cbe248970ecabad. 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/FRZ368200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x253b61c33981e3e8b151b94013b2289e7f9c599e109d212d2d50419e0cb317a8. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/FRZ368200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae09e2b1f933803d17ebe51005a0037c4312d9f0290f59b288ecdf598abc7386. 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/FRZ368200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x055372cd8c6871c1cf2370bef63cecb0882c0739c335f034773139861f191e42. 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/FRZ368100029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe10833b49a69f603b21cb04ec36716416f497923933670857e11dc84d6ea83fc. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/TCAEN1975100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79f76407b2ef379999f661a8a093a9ffeebdfa805b1d3887b4504a05b171b9b6. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T20:44:14Z), 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/TCAEN1975125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aec283aa752f4d7ab6b3712ba1dd919649eb4829474e4b8631e42356e506cba. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FRZ360100066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd82ce5b1835824213f908bdfde45f45b4749fb38e9cc71072bf0f24f95823ef. 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/FRZ360100069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5675d2ff931ed511807b0c47e5e1728b88d95054a8ce8757eeddc161a39a9d9d. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T15:22:45Z), 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/FRZ360100071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd69f416ce3461bb48000c4dbd565ca771653d1b3ff128aa8348089d60f37de2a. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/FRZ368200030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58416193d10b3e15842536ceec65c7bebf348858a92b3b2ab082b4e702e58717. 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/FRZ368100051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x055372cd8c6871c1cf2370bef63cecb0882c0739c335f034773139861f191e42. 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/FRZ368100029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6d124bb4129f154acdaca34bdbacc553b4391c401aa6b655388be3a2ca2c09c. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/FRZ367600003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83ab209f5bb5fe385832cfb726ca2a22cb6a69ef88e9563829f56fb7e8ceb7b7. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T20:44:14Z), 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/FRZ360100067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x253b61c33981e3e8b151b94013b2289e7f9c599e109d212d2d50419e0cb317a8. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/FRZ368200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xade987e7dc979736137d275133ee607570f9774421f4bb2d18b5eb5970b3fafc. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/FRZ368200035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1009c7c99d485db0b3a9760c50969e24e14a8f8a48ad20c2ee3ecfefcefdc03d. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/FR9W11607555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80a0e53c117f8421ab73ce04bee270596069975f0975a4cdf64c7fea34e64b0f. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T13:04:09Z), 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/FR9W11607560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6bfb6e7a84473639ba642670d1f59181baa8b23e5b5fbfe91df71c14eb416ee. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T00:53:33Z), 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/FR9W11607551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8993ed2c42bb5300e0e3668ed05286472d4a321d1179559af3d1b4ceb06f54e1. 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/FRZ082100353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8993ed2c42bb5300e0e3668ed05286472d4a321d1179559af3d1b4ceb06f54e1. 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/FRZ082100353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8993ed2c42bb5300e0e3668ed05286472d4a321d1179559af3d1b4ceb06f54e1. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/FRZ082100353.