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 0x9345ad6373c6f610511296e186e864c9e9a7f311d9fdba6a4fa97a18c21d888b. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d0e70672-94b6-456e-ab37-11b956b09828.json and https://artists.proofprofile.net/proofs/artist/d0e70672-94b6-456e-ab37-11b956b09828.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 0x504530a4bfbc5592d8e9b0a4cfe13f9e8c4e2f83cda9f9d3e5bd86968231389c. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/US7VG1905081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xede32ccf6497dd85427198d42b9c6c48bea5bbefc333ef1651bfc9b8830f5b86. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZHZ31983509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18e2fe5ec78f3389eb4e5e23601101ebcf6c2faf339e417692c7ce9a62c76c16. Chain 2 (Bitcoin): anchored in block 958422 (2026-07-17T13:35:31Z), 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/QZHZ51936907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00ef1ae094e9d4967a66ed4fcf68e1c1a86960be1bf167bd9294cd42dc20fddc. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZHZ51950959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x658a080d067aa72e1f118219ba07c0ea1b11feecac2c91fe1a42f15fd33a869c. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZHZ51962063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08694959447e1a66b43cbb0baa8955508a5ad1f5f507736db58219c57d32fe8d. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZHZ51962004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x887a77a87f2d188768bdf698d0011d9f16f4b4741a6c9933238adece5821c48b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZHZ51962016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82cb0e8385262c5eb2aadf223338a7f61c82b0434ec8dbcbb9b9b2b304facca2. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/QZHZ51962090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83c26c2676cc56239e19ca18afc55e6ea738762b97cd75ffd56692deed9e7462. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T19:02:28Z), 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/QZHZ51961989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf63c3e51a2a35f0089d944f0efd83495520b50b1319d702a3e7d885ab1e8e8e5. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZHZ51977147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca3b0f2ca8d47b9b3226d4d4d1252feb47f7e3a84008efc6f55dc7a9664cc444. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T17:37:06Z), 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/QZGLS2052145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f17d705ab56b7429cf62a0a044d9683685e27d8029cd22a87b67a4b773eaf4a. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:22:56Z), 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/QZHZ62150923.
Lá no Parque dos Monstros a Chapa Tá Quente
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3600f0e805fb710acd71216e0cd38149080f1195535b7bf8cdb1b1e9dc5f2f6c. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZHZ52264723.
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