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 0x5eee4cfc14bc0b6cc3bf526888fea3f6d9fc597e236a5695721dadd8c272645e. 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/e4bb055d-86dd-4060-be00-f7c9ef9eb677.json and https://artists.proofprofile.net/proofs/artist/e4bb055d-86dd-4060-be00-f7c9ef9eb677.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 0x9764012f5dcaec27f3cbcbda31f6c1cf577dfa438bf7ebe26ef257483eb02f53. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T20:40:29Z), 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/BRWNK1800108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9c29e035555d8bdbc145cd9ead0b7ce6f5035961e63e9ada41d0989e7b8b1dc. Chain 2 (Bitcoin): anchored in block 959355 (2026-07-24T03:24:16Z), 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/BRWNK1800111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd4364a527124135d0e34ca12853435849c7527e3ee26c684feed50686c1288d. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/BRWNK2100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x824803b08845ded9ec24f628858302fabe911f9173df315ebaf9a3b60e6d35cd. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/BRWNK2300055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36747df7ffad7bfd5482d18be7445ba54c05f79c0f759672d34212da22a6f231. 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/QZNJZ2324354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6011f19d1cb9fc835a6701e41ce69e2e8d2ce4c0fd7101b0a4cc4ff6fb9d3521. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/QZNJZ2324355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa75e4f74c72c26894c226375f3d32bf67b5d09a3fa0a512ebe6c858c4e25f187. 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/BRWNK2300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2ad69d56e6959c13968beb50c873c30f976fa044ea3f963d16270fdeeccba5a. 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/BRWNK2300054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x781518dbd44db039d878762c825cacd7d53fa5ea4ac89a20b59380c71ef1ecdf. 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/BRWNK2400183.
No Tempo da Minha Vó/Garanhão da Madrugada
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06d8652b553567fb2b029ba687c3cb402cac51fdd65e9a2bbc564732b0272738. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QZMZ92504318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x946ed51ed18c06eeb6c2c686d5949638dd6ab3de2f8025deb6b7fa4bf1e8debd. 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/QZMZ92504319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x677516379862c8be329dcb1b54584ca1fae6dd9a86c0daf2582cc33661721390. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T05:43:55Z), 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/QZMZ92504322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f1d9431c7872f0a7201884d2334105e19c2d6df8e3f1f3cd8bbff7243d7b612. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/QZMZ92504323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4556a60213172279f07bfaddb22ae4883d6b42780dc036741f3b13c549123007. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/ESA112579428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ac6cc884c0a83a44881efa4f8ebae0162b945d109c947a57c78eeb8fc377fbd. 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/ESA112579678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf48c99643d28ed33ae1e5353aa0f792a498387ca3e5d9295e93ca33e0754487b. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/ESA112580663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f5ab44ac1de59211500fce5b1ea95c59655727079dd4e7e2c4e2783c3e53251. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/ESA112581841.
O Poder do Teu Olhar / Meu Coração Sofre
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27205e796da55ca84b4b1ed18c33e36a2eaf74aed6ccc3c1b376fd7754de0e54. 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/ESA112581836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6bf360c9e55227357e54b255697283261180c187a009048ff8ed232def1d78b. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T13:01:04Z), 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/ESA112584980.