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 0x00e0116093a217d1707abb39e8c18fc7b6a07fea94f99a0467d762d636cfb697. 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/d1aba779-0845-489b-b4f9-a8c3dee40145.json and https://artists.proofprofile.net/proofs/artist/d1aba779-0845-489b-b4f9-a8c3dee40145.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 0x87862e6ca9c40ca7075f34632268285bf90fc11015362b6194e451013bfc350f. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/ESA112441775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec03c3d1f537af79af76f5256c8fb55e57337338cbbb2ebdc53de10643075393. 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/BCHFD2400083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99a0fe531fba3bd139415ca5cbe7ca93ceffbb0a0b3765a2f5db6a8be6407ada. 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/ESA112439684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x595c70f951fc026bcd09f7b00469ecf997ce841463a827e7e4e3383b9cb72993. 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/ESA112439683.
Mtg Carnaval de BH (feat. MC MK DA ZL & Mc Waguin CPX)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2388181a537e7733c276431c8dd0a69e224c59e8419029969a7de8b487eaf530. 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/ESA112439682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2f010fa997711e2771f36a097fceb6254ffc9384f36bbe980a519ebc6a30cfe. 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/ESA112324926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67074a80d21a00687263d31df9b775eaa2added77b2cbc87c297049ee655896b. 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/ESA112439680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf53d973bda2eed0c9300f9ce399c3b410ee61d3e788f08b956410a2c7326e200. 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/BCHFD2300120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa94f217f02e9097da5400c0c0225494f3d3907d6f29f93f91eb451096748c1e1. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/BXTRN2300268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f05ebeadc55ac01d2067d22cbb03859eb1dbfc05227d3acc32594c8915524ac. 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/QZW9N2233691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6f03d43da07782d9a4d8eb97a5fad41cf1d3ccdc645e3e7f1108763384c8ee0. 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/BCNWM2100074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d7e46485cc804bd3d988b08c42f4ee19d829ef2f0d3c8e951b08298954a7796. 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/BKBBL2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd102241096e0927fe73619e94f5af80c2e827c9193c336823a6a785cdf764b5b. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/BKBBL2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x954601acbd354cd39e5a2d35b117d96c89a0ab84f8d10c511bb4a35a18e1a905. 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/BCNWM2100042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95303f8c5deec1589a654c2b58b7d4806f95ddf4071f9ed8242ec4a69c5d4dc3. 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/QZMEQ2424052.
Preto Vigarista [Eletrofunk] (feat. MC Garoto, DJ Rike Freitas, Mc Bombom & MC Meno K)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10893b2035bb5cf4f1ef51e2809b95c9ba42d6821111021c1e96124c9d15eff6. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/ESA112441144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65ad53aeea354b26821e3736880cef53875bdfa1b0209e8c15166a1e1892edc5. 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/BXTRN2300276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe17a3b591e3d69e41cafc06f624e1450f341239df6a9f074fab69eca0d5020ac. 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/BXTRN2300277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fc3ebb44f533b97ef668ad79fb50942afcc8fb4130645adc4962752f247922d. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/BXTRN2400661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35b34c2cf65cba3d4e530a7cdc556b80cdc9edc847b13f4b821f25b1894c97b8. 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/QZGLM2517983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x989cc21fbc77490164a48f9ff808bbb02d89176cf754ccbf12d6f6b4c10e8a74. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ESA112447100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40af3525757f4d5af7b75380037715520aadeccfe3d14d1327b7edab961cb48c. 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/BXTRN2400668.