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 0x197776eff1f6fe87acd2777d33a863d83048c12defbce4cabed1a1b786fba061. 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/3fbe67b1-aaef-427d-9db5-d1cbe551cdbd.json and https://artists.proofprofile.net/proofs/artist/3fbe67b1-aaef-427d-9db5-d1cbe551cdbd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
PRIMEIRA A DIREITA TU PEGA A RETA (ELETROFUNK)
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 0x742370d4f69e0b7528aa4b0aa5c42a6888c21c7ee16d228aca133cc0c41db224. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/QZFZ32373578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x894b80b2c83d9aed278b0733d5400ee4fd0b1ca5bcd88059aaa9424b46037799. 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/QZK6M2346437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaa430dd2095e1684a3dd13b78ab5db9109a40bfadd9a07d51fd9bcbbc013232. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/QZWFK2356140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95d0719b666c1365442cdf8effa667445d4bbf7a24816610710b65170efd9a80. 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/QZFZ22414958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8a0e8706643ff36d66f9b82c2edd5c3df89ca17f1b1afb757c80c3293f3ad12. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/QZHN82410471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeddcbb903b79b9dd07fb8d4bbace2c09513e48cb22b863074e29200ce2b97ff8. 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/QZHNC2424897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23fc2902fb28ede63ebfb1284d782bef2e49f5a216a02539a7b68370b0bc4b80. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZMEQ2457528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5481688e84507fa504bb6655c57fcad35df93fba79ea0403a92587ff1c044de. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZNWZ2445438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabc85d6db96871b548a239e657495b3179e87eefb56a8c063b440fe9b740f5bf. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GXD7V2276093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13b61fffad6a7afb4a56f5fc359497e4bc37cb28de86eb36f161ad2eab4a3d99. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZTB92407039.
ELA TOMA PORRADEIRO DE LEVE (Gesualdi Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c84f2c5f55f1f9c95a46419ae8f5c5681da3fc9170cab3e20b12929b5ae2f51. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZZ7M2485499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16f1b9f614b2991abae156d31c081265fd0f12fc03c7b090f27010847b9688df. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/QZZ7W2435548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a87739a1f86b0d13c7a9edf4a3fe33917bca35313f5552b2cc73983651af9b5. 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/QZFZ32501044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5e0f5489a4add35cb8e6717b14c3a696d98d6fdedff1df295f4ab0e621a8456. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZDA72549928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e0970583b484cb36973bd8184236b82ee75af8d52090a47252ec074a9dcfd6f. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QT3FD2588176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0d660dd7d1219cf222f1e65eb20e17757751883694058d1991b9b5664070f8b. 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/BCFCV2400142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc9d2226473362dce4fa4c87c885a90d76f02323c940413417a4091b6b790a04. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SGW502356155.