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 0xd0669f95b4ef7e947863b0744534ab0fb2244021dd4922840828a08a9424cd3c. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e522d16a-d146-419e-b29f-9410dea5adfe.json and https://artists.proofprofile.net/proofs/artist/e522d16a-d146-419e-b29f-9410dea5adfe.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Pot-Pourri:Tenho Um Amor Melhor Que o Seu / Novamente
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 0xadaf990b3c0d88786133e34f6bee74a86f3de587b14881ec7d1ce0f31833d2b8. 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/NLRD52338355.
Pot-Pourri:É Como Dizia Zezé / A Surpresa da Carta / Sem Pagar Aluguel
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32eb338d17c76387d55cb5e0edba1db9f366e63ce10e88009f173c0a27142583. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/NLRD52338359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e5f176aaafa345a9c0b273e6175e9fdd8163326d3f924b26b05c3def775d521. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/BRXMI1801071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f1860f743f26d06e4e04d931e6576d3f7c209c57aa613ff8659b38106e7f906. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/BRXMI1801072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffd024cf1fef1f9896f3b9a3cb94c4365514b80c9ad4733d7ed698fd0c149380. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/BRXMI1801073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4108cf98e1f1cf669c6a462dad7426def6bda30894ac5f962a76beee2578a835. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/BRXMI1801074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bc609ddcd53ef070eb7656ddc459d01d63dbc91522278c8e4112b4a0f903201. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/BRXMI1801075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86941973ccc920749f7857fee44898e9231f53f70f2115f446176645e622037c. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/BRXMI1801079.
Tenho Um Amor Melhor Que O Seu / Novamente
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedac8f4872ce91d13654556ee501bfee9615a7834201676dce8a5bad9df61fbe. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/BRXMI1801083.
Eu Canto Porque Sou Apaixonado / Longe Do Seus Beijos / Sei Que Sou Um Homem Apaixonado
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a3a5c726f901fdf8616d3f59fefd5849dedbbd8332414e6be52a9f2751fa162. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/BRXMI1801084.
Ébrio De Amo / Nessa Casa Onde Morou A Felicidade
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf287be92973b2eaef75bef143e3adf7f51a9fecdcc54b72e6b375e10d5d6eb9. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/BRXMI1801085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9c60170d4304011f32c6337c5450b9a2805676ac7194e3e1fd1d93408696891. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/BRXMI1801086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe35af74e1cf4628509244618dfb2571ff00ba94ea824d6c1a55354b5bbc197bc. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/BRXMI1801090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8049d8a987b79d7394a937330e11013ae5c5939009679ba0934397e1cd4507a5. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/QZEQU2139538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19b17c26897672f43bef582ecf0dbb8633aef88abd320da139a95eeae8676e18. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/QZEQU2139540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc0758c6461ed7b765428ba1da54b1d8f63bd9e16881971062bcf05a3c7b27a2. 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/QZEQU2139541.
Se Você Fosse por Mim / Quero Ter Seu Amor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5570c7b44dbc1da17aaa6dfc84acc15b17196a8ee47cea88c10ccda9076d5bb. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), 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/QZEQU2139776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2549d4fc35416af1933cd9d8097d8e3ea9e056ea8e2d2ce2f08fb252b8df915. 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/NLRD52042972.