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 0x8226598533b34785cbdece6ad5699b6833c35d3de045b30ebb67011bcfc5001b. 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/86594a18-035c-4f69-9bd6-2de31ded240c.json and https://artists.proofprofile.net/proofs/artist/86594a18-035c-4f69-9bd6-2de31ded240c.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 0x6db3a95fddfa04542f321d9e164dd32c34c424e02c7285bb2616f5521e7ac272. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FR6V81824685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64be95d2bbccc05b1106792b4146e98eb1fc8bf5d39d88cd898feb394b779c3c. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/FR6V81824687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91495d13e3b8eca0292a471d24288fd5f9311d645900362f78f253f28879c6fa. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/BRTPA0300135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79368bb0b847d9064e9d49de918597b89b882a4382be71d11d6acc3389afecfb. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:38:39Z), 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/BRTPA0300137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51d35248f32248af801f9e7826a1523772ca63971e5ee7d33732a91635e0c554. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/BRTPA0300138.
Mtv Apresenta: Simoninha Canta Jorge Ben Jor (Ao Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23ea028ea6c8495e28cc34c290da587d6fe8f41e8c6593cddab41787039908ee. 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/BRDSL0600049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafbda8446cc25458cd2d3c0b33230af434d7e52ff2a142aff06e468e3e0882cb. 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/BRSDL0600049.
Aqui É O País Do Futebol/Musica Incidental: O Campeão (Meu Time)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b28756660da2fd10f24d174a53868a39393503efcc055e260c68f992f491afb. 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/BRDSL1300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9673ff0c5686dbcce843bdabd6a0bc12c86cbb3c900d92852ce7d4147c25a0aa. 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/BRDSL1300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b28756660da2fd10f24d174a53868a39393503efcc055e260c68f992f491afb. 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/BRDSL1300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9673ff0c5686dbcce843bdabd6a0bc12c86cbb3c900d92852ce7d4147c25a0aa. 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/BRDSL1300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38350dc446600efb4a717feaff4f1aa0f1230d8b4fe4b0da0e074951b2d732df. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZ5AB1639720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc50961ff15ba5ecb0307a7edeb3c1793be6b2f4da1e38b0ff80481aaa192f467. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BRED60800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4351cb0ae4a53d2e63e1cc0f4133a80b147e9f354d961f6e1ee457fcc795733. 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/BRED61200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb50bb145fb85eddb313748d71619a01032ce2f8296fc87c66886f0c9da5e66a3. 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/BRED61200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d8e35c1a0b22d7faaf9ae21730c3a794fd6364ffef7bc92ae52a008e4966eea. 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/BRAP60500015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f9c008870ca4e188259ec588e1107de576c461ecde27b099f0a3bee35ebd9fb. 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/BXSAB1600006.