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 0xb38b4b76c97be86e1a31845252294b2c7752a81a72fef9c3781b64a4a0cbbbe6. Chain 2 (Bitcoin): anchored in block 953864 (2026-06-16T00:30:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/049cd509-efd5-4731-a11a-8e079a2973a7.json and https://artists.proofprofile.net/proofs/artist/049cd509-efd5-4731-a11a-8e079a2973a7.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 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 0x514b2e115c3d09c4a951aed6c53716efc96113cc943c3fa052bf5fa4b680cb66. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/FRX201729819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6be38a51e2d877ca6ea41aa59784886e986dfc1abab38935096b7bbb1f10346. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/PTOA11700014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf5dfd44ef88d8b2c28c6e25b8ea06e03dcbc5bf2acf56d79355d7b4caa67390. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/PT3IH2200100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e19ad57fef2e9c170f349f9be941b9d42fb458ec096fac06384ace525b3457c. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/PT3S12500038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7f81078c3feddff8507c53c35b78e8852b7d91b5efa2344f53f5cc5f8f9c6a2. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/PT3S12500039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf34fc9d3125f93e9a5b17622b275af31960a08bb6846f7dfb1d32bf79d3f2c6d. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/PT3S12500040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x913c7705d8a4973f81441d2bc37313ed97bc944f4a6a07e81b7ac181a26d66bd. 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/PT3S12500041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd68e4cff6f49cbe18b48340484fcdbadd8df418394bfaf38a5058dce33132edb. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/PT3S12500042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07c2516e2c15d5df8ffbb2bed2506e536a6a1cae64611cfde2fd7bb4e68a2193. 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/PT3S12500043.
Família (Ao Vivo Com o Conjunto Musical)
Família - Ao Vivo Com o Conjunto Musical
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a4760a8ba4db80119aa0aba49d0eb2aabeb3b404bb9239907c98b934fab7eb3. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/PT3S12500079.