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 0x805cc4ea8003f9f32713225d2bc3d2bcdd8c94dd734d8a00454c0607cbd341d0. 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/74a90b40-c59f-4a13-946f-70c19b059800.json and https://artists.proofprofile.net/proofs/artist/74a90b40-c59f-4a13-946f-70c19b059800.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 0xa00dd55619982f5200c8127e05a3c7b0e2a71b4933b4716c1999424d0f92dc26. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/QZTPX2213971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe5a8b1446d38b53af3915518a9b99a9ae3d90570e227769163057d22ae5796d. 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/QZTPX2213972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x526507ba745d4a60a909cbcb5e777141dd32317b7d1236ece87caffd71a8f9a3. 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/QZTPX2213976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87f3afe6fa43b6f46ffdb4e451e52b0a0a28696698949b1cdfa28a87184336a7. 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/QZTPX2213977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55987ba663ea420ef4c09cae3c81331f2e38a82936ebd7cfa42c46246c7a27d0. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:11:01Z), 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/QZTPX2213974.
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
Perdão (Qualquer Dia Eu To Aí) - Acústico
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7381cf8593b025a4148516904a7a21e15af5037fb7dd53515b6c187cb456e073. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T14:49:23Z), 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/QZTPX2213975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d2a643da42044ad5227c47abb6ce2e2ccf6c0946106afc572e866d27c74e8bf. 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/QZTPX2213973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc163c878db54092a7c61322898e739d8b8323b06d01f85bc2fffd0be984cdf9d. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/QZTPX2213978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2487c3f2377caa2dbbb7bb12a00627fa9144498f0d81a4c50fc2fe7e77fc5e4a. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/QZTPX2213979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e9becfbf4a0dbe7eed5c43c6250cbbcea612f8d092e07237028c29caff5774a. 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/QZGLS2545673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e0d2b1079856faac2542d9c330b843475cf2351c9a015a064a50c838a4883a7. 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/QZGLS2541943.
Novos Talentos 2025 Roda de Funk (Ao Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1199a6d9dec8b5cb9238200a9d4d1f12947b280ed6d86f1535e16e57b161e40b. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZMZ92598645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36bac033261e8e01765b979fa2ba16c6f0a30515ea966adae323254cd37fc79a. 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/BCRUK2500015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41d6aeee936c389f0bf49cb95999e8422f831b5ebf3eb7152f701b787adb1eb3. 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/US7VG2458396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4382b1b2b11e6d5fec408df85245019f3810f06ab87abd17240904b1e052fc6. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZW9L2383593.
Sentalização das Novinhas do Rj X Cuiabá
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf575dbe777fa2d13c6c048e7e0c394fda7c651108ebfd3359f2560527abdbb9d. 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/US7VG2319232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14247229a50564780c10b7e33e366d87a2e364890f7b8ed411d3a3694e0ba714. 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/BCX6W2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f8afc98872788f0c2792d1f4d43cdb993d09d82498ef149405cbba789b6dceb. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/QZNJY2300774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe508a0cdf055f527ceb8edff6017d256b1dbddeee4fcdaf946742724258b0fda. 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/QZTVM2315127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1a8adfc4156ebc76651984d0990181e7ac3fc01a002bdc472f3b32ccc302629. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/QZW9K2201547.