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 0x94d10451a98ce4b2c1d3a2416b642ec33590e67a20d51a6272023a60f07b68cc. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8b0f3db5-0c72-4c16-949c-1549d857fb20.json and https://artists.proofprofile.net/proofs/artist/8b0f3db5-0c72-4c16-949c-1549d857fb20.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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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 0x1c4f0e43175f3f5c86845b3183523e3bf096685bfa72c2a7596c0a6a310b8308. 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/PTPA11400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf85225a90d00717eb703458b1f378ce774cfbbca867b51077f55ad76a8d0b861. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/PTPA11400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ce85c6869dd0e3f6e23200e37d9f302411fd02466afb2fcade4c120d95c1787. 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/PTPA11400020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ed92c4c96d7cf69c040ce7fe3f397ec80665bc5971fa5ebdb43b088a076e266. 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/PTPA11400022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe80d5b268b7c31b7bac4bc347af9bda010b46389040ad40368767e16c8ca4ef6. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/PTPA11400024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35bc4f29b48fccdda74f7dabec4a87b0bb451d4b6df0595cf0ffa3ee92ff9d25. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/PTPA11400026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ef521ef79ad63e49caa4626dc04d15584a180f2eae25036ba8fbfe32e3e91d7. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/PTPA11400028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a325261fe8f2675d3da4f53071cc8e24db86a7ce8d0560fffe9c08c7672d666. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/PTPA11400030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x671e645f3bf04f9088770931ac54ac94f998ee19c7a0b7891f89993f39fee57b. 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/PTPA11400038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x549af37fc76c3da1cd10b8ef3d54599bb6a54e44ae5173ec391c71c3b349f010. 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/PTPA11400041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d0aa1644c5b86dfaa85c477bdaba70810e83800def6b0e306805cbf839e8332. 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/PT2A01832001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0cc690b0603a0f7d812f37fb1ff404685aed1af3a74be96f8a80190880e98bd. 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/PT2A01832002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3d061580efbb2c3bdc04cb0e877ca1db09146702de2cbc2e443f025236a1d0e. 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/PT2A01832008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb50cf15f1af684752c4397289f5f2251195df98508b927967aad100f56639b27. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/PT2A01832010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dbeecf4806e242eada7ffb9ddf27a60e687378594d7d178c26c8da39603331d. 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/ES71G2235714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdf5cf6e6fafc3f8066860faa53e86164b7e5ef9fecb0c05496b1b4f1ddbd41f. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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/ES71G2235713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2674fc6fdb3c2f99d2d9b19a2f24a83d7e24033b8567e22eeeacc45900403318. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/ES71G2235712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02d55acaf9a6b15483e1f232d8940451c6e1ea3c5a9720f17091467f18df4208. 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/ES71G2235718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81b1576902728e584b73acd59cfa794da1eb54642c7cb08c87fe56d5315d44cd. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/ES71G2235715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7ae505e976147a6234598215a98e189344a34b3752e84da2c301290e15c3b5c. 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/ES71G2235717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b85bf44a950c02a0d74c42eaaa5ea3ea7bbf4e25435c6d22a93aa8ac7685f55. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/ES71G2235716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bcdd9fbd4e397ecf549cf2adbff481c550614f096d6c53c926c2a7931ccf678. 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/ES71G2235719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48b4b2eec24556dfc31c4ffe5b8f8f45815b41bd120388bb11622762b58c0b59. 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/ES71G2235720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x419eed22efede3200c6737d31bd0095bda3b69c05bb2678386682f0e7d69b54a. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/ES71G2235721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95d684b53be0889828649775a8b65d9c52379fdb32211ca5b587a5b728790e5d. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/PTBM11700022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16b6eb44f310200e7691018d1071097b575ac8811346070292298039c5af980f. 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/PTBM11700023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c3c3f6dfffd3aa84326b4b6463267881290083f813a73b614db5a70426097b1. 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/PTBM11700024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83fdaf239929dc685cb5bae94df063d713251f690592ed6be88501c4d15acd81. 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/PTBM11600310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc6fe82f607b58fd6c248c758b965bbd26393f876d683dd2be21f3454b4a4764. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/PTBM11600223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2482eda7bb02acfeaf4d1b1c68bbfe3059a036a5d306c486b998b535c6e7b6c5. 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/PTBM11700025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa19218e95559b986ef7e726e94c186b14f1c1849a70018a99b47b135ff42a079. 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/PTBM11600311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6a84f34250818ae3157dd30eec8e71352fd4e9882310f2793384d2825aaa92f. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/PTBM11700027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc092352932ef374ac126d0c2f5ec53e2b2d869f05938ce1e43a72ddfca376eb4. 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/PTBM11700028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x999139a617daf0ce259192f4f67669cbd0668cbfbbbea8eca16c8cd6c464a770. 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/PTBM11700029.
Manuel Fúria Contempla os Lírios do Campo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd09dd64bc0ba39087a938b7df2c008d9c2137aa3c688adba8a69e52ba5bacb8. 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/PTPA12400001.
Sou Imortal Até Que Deus Me Diga Regressa