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 0x61f90683cfee0c749c4af9123c4e620393e54c22dd4f0e6cb9f048989457e752. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6b1a67ed-6563-4b20-a216-34e19fb7ee2d.json and https://artists.proofprofile.net/proofs/artist/6b1a67ed-6563-4b20-a216-34e19fb7ee2d.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 0xc5981851496f28f8162838f6d9726f64a2ea2eae809cf79720f540cf0d63c7f6. 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/ITW8T1600010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x821141b4b7a226a478ff6240ff3a9dcf3d5080a50d69f72937c46c4512d30e6b. 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/ITW8T1600011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27eb78da4ec3c63251044d6ad5862727cc43df08868e0f5faaee53730b96b23c. 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/ITW8T1600012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50a711e1a42791f88e0e84032ec40bc1d4a798995c25f9900a56aeb4acebeedf. 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/ITW8T1600013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5177bb001304ff09407e4b5400c9546d2f77011aef35f015591d12067e891dcc. 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/ITW8T1600014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x258e27a18fd2f3db64eb03bf4b5b9833e295378503a32706a61d7c4470ccd55b. 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/ITW8T1600015.
Ostinato vo' seguire: Ostinato vo' seguire
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80c9adb5210fb5f181edafdc3520f4949b4355d24e121b74e2c69a8262a8e92d. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BEE640514301.
Chi passa per 'sta strada: Chi passa per 'sta strada
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c293c0244ea1eeb4fff9db1bbd2fe73be7550585415850dc382c74ab7ee6efd. 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/BEE640514302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf525848c40e61a01a16fa4213a77195a1110f7ede0178f0c9eea91e9d0b1e58d. 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/BEE640514306.
L'amor, donna, ch'io te porto: L'amor, donna, ch'io te porto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ac412cc3ba0cdbf8c489b18439c6f188982c260a8d5973995e86493453e7b23. 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/BEE640514307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x953f7ec3b25afbe073ced029c1aa20496159b7d93b11eb98e1f5c4c963862a86. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/BEE640514308.
Pavana e Gagliarda "della Traditora": Pavana e Gagliarda "della Traditora" - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x422ca7b097747689502d986f4adfc7de189ffedf2fda6604e94e05a8bd7e197b. 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/BEE640514311.
Per fuggir d'amor le punte: Per fuggir d'amor le punte
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6538ec7f9b119257213364a5f5ffd85c6191fc5f385a5c587a725b157fd654fe. 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/BEE640514313.
Capra moza sonemus et cantemus: Capra moza sonemus et cantemus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b843a5c6543eea728525864041ba23bf645626c17375ec75eeaaca41be63935. 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/BEE640514315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67c277484af1fdb5b3a63c9041f0a6feecfe7fbbd0806e6341ff633cf227c2df. 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/BEE640514317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x718f20bee26c4c02eda0f4a2eb200225d6d63963df466b56975ff991f236d09a. 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/BEE640514303.
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
Sotto un verde e alto cipresso: Sotto un verde e alto cipresso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf6921db764fc0a4d444c1a1b9afcde88c288df98d5734432451ea2b14d9d1df. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/BEE640514304.
Pan de miglio caldo: Pan de miglio caldo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb21d2064f883471d8d692b87ae8ec40c4e99c0b0006876f66417f8501962a622. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/BEE640514305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ea16fe6bf5593f9c6f948244fc50ff27b245316ce0a3495a22a5b2123173422. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/BEE640514309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9279126b498d4140c980ce3810909b84526a793aa73f88951d3a0da9903ca885. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/BEE640514310.
Canto di Lanztze pellegrine: Canto di Lanztze pellegrine
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd8565915a2942f522682093b4b0ef88fcb77be28eb31166dc05dc8d1b1ad021. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/BEE640514312.
Per dolor me bagno el viso: Per dolor me bagno el viso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1e8b0901bd5ebc08791c9bfcae4ff1e53dd42e01fee618366ff3ad22bef81f1. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/BEE640514314.
Saltarello e Piva: Saltarello e Piva - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x575dcad8937e4805055c36c5c04604717a4fba2b7719999f21b1ddef249617f9. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/BEE640514316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f4319b91b2bd4feb389311cedac02ed9d845bf9d2f8c22caf1a14f3c27d6a06. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/BEE640514318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7a7914e1c3f66dfc5accb8d657f759ea9679d0f02c7687c5be948f883cd2d94. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/BEE640514321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe43f31ef0f62779838ef2675fda4595c24ff1822a36a066218cdc954f8f3883c. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/BEE640514322.
ANNA BON: Sei Sonate da Camera per il Flauto Traversiere
Albergati: Corona de pregi di Maria, Op. 13 - Vittoria: Antifone e Mottetti