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 0x65af7d3b14440302e02ba0c2e24c39ce3132311bacb1b042397d76f0f0f66831. 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/831c4ac7-eedc-4dcf-a351-8bc61fee8377.json and https://artists.proofprofile.net/proofs/artist/831c4ac7-eedc-4dcf-a351-8bc61fee8377.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
O Grilinho Cantando, Eu Te Empurrando (Remix)
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 0x7c93a82c2216c6c5514ecab49669725f708720fe4de7ceb8816e9f8c7d03065c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BRUM72302169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11b69de6ab50f86b303f7549b4035ba54c3628a76bd38570d547f5f3855ee11d. 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/BRUM72302168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc293d76db3b4e46ba7f88f789a1d4c5cba522cbfd5a9386121b06b0b2f8b372b. 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/US7VG1547199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac17ca990247db2ffbfa36a34cc0e2b00bb0ce8f65b2ccefaadff32d30aa4f89. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/BRPK12500023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa060f428e6324fb1605cdc35309c0e0f45e656fac9493a8c8f39632bd51acd3. 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/BKAM92500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c82ccbadda4310684d5dbf59a0916700c5d7d1f8c85eb4a70a1aba9e7955cbc. 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/BCLWS2402448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27bc3524c9c67a4704d912510328b72ac1574c6f02e728f73938316e9ca40e96. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/BCVK92402043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40194cb0370b2eec20c0ca0a44cb3603cf042b48f7dd6f6feedfe7d609927087. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/BRPK12400129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x065fbcd11600a869c769f05d883439e331dd9370f75ca3e6624d68a4fb506b0a. 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/BRPK12400025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1dd0accba65cd431e281a6828091defc32ab8ad287397e2963a24b7b210b98c. 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/BRSME2401086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x727b16454b178e714e750c88b7d15f448b7347bda42d1a50a6c7066a641a0714. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/BX4IU2414890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06a4aaef6f79f2b77de91bafc2eb7a4208bb49a22f72aec522329319a52b2ef6. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/BKEP12400189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd90e6a7c2be46117c00cb35fd48d45dfc6d68c32b2d1d2a45eaca47680494ae1. 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/BK4DA2417398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27c5c5327f7aa3e2f12ab84061e926845194d058a2a15d6048abfe2305dd584e. 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/BC22C2300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x552acd111ea3819e7de07a726db294d324e4a5ba927f77c65b0f105c8bcadaaf. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/BCKZZ2300327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa745d859259186f84420f422e29ad40f13165f0ac16ab8e0249cb0030b78e9f2. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/BC3PG2303632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5606d4cd1d21766cdb84edc62db11c74be6c8b8e8db967eb510ab21e5bf2af7f. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/BCAPW2200281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec2f0f72df764eec9e2f9d0a4aed446b181b19292e6937195bed283186e13cf4. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/US7VG1547141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd74775a670f0cd9f643b9e46b9a605dfafa6fdfafc8a770e9783f7e00b5d2aa. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/US7VG1547149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e4cf009e3dccb2202549f1496907fe4db9bde8d4365c2b91f64c14b9e15e81e. 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/US7VG1547152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a98e1ab417d787f578ad932b039a9f1483a783fdf808a78f95665caa29e78a2. 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/BCLWS2404555.