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 0xff38085b5926c317ea7870f15fb3e48b607d27c71857941790d36146ebbf7b01. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/507b0577-50ca-4b4f-90a4-188888f6dccb.json and https://artists.proofprofile.net/proofs/artist/507b0577-50ca-4b4f-90a4-188888f6dccb.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 0x0a86fdd1e785d92616f3bb42caac1bcc0b160ab598b8225fbffed0b0326654c8. Chain 2 (Bitcoin): anchored in block 958041 (2026-07-14T18:13:17Z), 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/BRACT1601409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37a51d202374d40ba5d2bdda5448a10b1930af22cff3444032dc2461c0b9aa90. 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/BRACT1601412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5944f2696b80e5d56ec54f5c0d4c470c2248e315416146f809147481cc3c5bbe. 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/BRACT1601413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4d09a348648588fef79866d94379dd8dc71ebee379b49e33ad2bb93b4716641. 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/BRACT1601414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x496e15597c04a406a316a1eb05320d389fbca18dcb16e012bee6c19f54308c38. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BRACT1601416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35a59ecefc8bbc409e9b75e35e24bb0de3c9d0c65b59c4e0859e8b0fc0b98f77. Chain 2 (Bitcoin): anchored in block 960177 (2026-07-30T00:21:01Z), 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/BRACT1601418.
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 0xdddeebf4fe2e3d4c89e9c16142c2489acc790a587bf842a726ba60fdbcb3824c. 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/BX0IN2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a51762195ac480c0aa301bf78bd9f381fc3e83eb404fcb6b74be34f736e34f3. 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/BXA6N2100002.
Fecouva 2022 - Traços e Cores, um Brinde de Sabores
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x983e5835ccdacf243060ed23a980031ed6bf002af0aee864b835f6003587bdff. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BXOIN1900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa62c7a0c53e2ee2a3749bd70260eef022be8d112ab6b2565716ee42441d20779. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BX0IN1700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9515bb26a3203b1cc8a6e36026fd3b800590378acf7b8363c6c3d79d994afe22. 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/BX0IN1700006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a112441d9f0523566fd918420240da10e78329271fd3c60813485e7d5b58fca. 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/BX0IN1700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d9d723c911f0cf9232b3952ca5d2706b66f4826088c402554081c4bcd8c0515. 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/BX0IN1700005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0bba94ac70311c21eb7acab5f29e87f6b26174e414432dc7b01c9c0baec368a. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/BX0IN1700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa41082ac7bd164be35cdc7d0f9cb5699d71ba67218376b0dc3c15934cf81c5fe. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/BX0IN1700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed9c7fa9a213460006771afc6e1c125c2216bbb0ed8cc63e6300bc7fc9d7de54. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/BR2EP2000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb32a92399f9dffa33a785b0aaf7eb351a1cb86961b6d70c3cf5bfcedec5f4f7. 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/BR7CP1900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fa374ca6f87cf225eee0d4266dcdcacc8243a0c1ca9a92845fd2c2811430e9c. 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/BRACT1100375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b27cb7784f129b03161d02dc71c7a92ff1f729ee31a761d121abc90bbc03de6. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/BR2EP2400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdb113cbc684d9616912ca14301978979c4f811ba4a869041f44b7f64667c4da. 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/QZGLM2405180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d4562e640d2258562cd0ec498b7b069bd0841d5376b3176e8836fc15353e684. 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/BRACT1603765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x699654eee3d5d84ca313c4b06278a62d18c458703dbcbdb30b2c2a6de72c8f18. 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/BRACT1603768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79c439dbe17f2d602428d9d10fcd09b605c881962ebf67338858eac7fcf33448. 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/QZGLS2426121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x713667df6b917cc886159c37f70626dd30f4c5cab77fb31e92833f99f7168450. 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/QZGLS2426124.
Estrela do Pasto (O Mapa pra Tua Morada)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94f29a9c0d5455d760b58dd44db582266f42e45b666a0f9c4674e538124a71e4. 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/QZGLS2426125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb14ad003c4fe318c45e17e890faa07cc1283df38bbc8aa3db556a6a893436cc. 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/QZGLS2426126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0e019de3518ddf15eba2547c180090b54707bd4bdd003c532a7a03e22ba6d8f. 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/QZGLS2426127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22f300a2ef0daaf80d4774c0618542d964fe14516e366f1ac45bbd6ea2dda188. 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/BCMRX2200046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c5eef8c6f6218342668e4c0009a32594f95b59d56f547b02eaec419895445e6. 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/BXDTM2400061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x207fb7f5282c2e9eb94d92b41942df0f7a30e57070854e824d0a6d844b511015. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/BXDTM2400050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe568914ede41bf02dbc8f0b57fe6f8835fe85baf57e2ebcf8d161fc49e6f78a2. 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/BR83X2300004.
6º Canto Galponeiro Festival de Música Gaúcha: Um Legado de Adão Cirinei da Cunha (Ao Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8731031e10f21e9793aff1244f4c99e9427f118757878afc6ec1cd66dd999ec. 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/QZMZ92333478.
Canto de Luz Festival Nativista 10ª Edição (Ao Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe32d286faaf843558de86318c44cc52badbb4f4c2842dcfc11341b5cdd200199. 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/QZW9L2203976.
Fecouva 2022 (Traços e Cores, um Brinde de Sabores)