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 0xafad11b0e6736fe5d27e688695200c6f1d39cfad77122d28a758244f61306b99. 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/bb822b05-f187-48c5-be00-46436ba7ad3f.json and https://artists.proofprofile.net/proofs/artist/bb822b05-f187-48c5-be00-46436ba7ad3f.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 0xf6681052fa44ff19cfba0f55ad76e918e9c28abda4b4302cc979494dca7a43cb. 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/BXIED2300315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x691fe778f9aab646d65ecac966ce6fb625e1afb3c97906801be1550d50997e17. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BCV112300038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x308b84f380bb3a0e086d67825eb7de87560311f6bd4713a6298d904fa8f7634d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BC3PG2500514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7de2b53934810257c5cadb89bdc853be9832b24bc7c221a6d888072cda8f37e9. 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/BKD6I2500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b2f9c3243ea4743e1eadc407cd03eae19563a52c2f433b8d69e73d1d7ddc230. 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/BXS0B2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x828f9ab287d68b23f354304a004704f839ef312838078bb947765f04c7754491. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BXS0B2500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d9911d832fcc2b3c02fed1114358c5a770a5f0343841f10b640774b616b39ff. 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/BXS0B2500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x461392ea7cc4f03f33232148f96753618cb403ac88deaa65281b13e169bd9fc4. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:18:17Z), 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/BXS0B2500004.
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 0x1df5684f32ff668335ee2824c08d716698d710aa51094cca95e3f359a5f52562. 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/BXS0B2500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1648bdb3106aafa92d029fde337ed65e2a76d6724b6be06b5acd323e289d9785. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/BXS0B2500003.
TA NO DOZE DO CINGA - MINHA FILHA FOI EMBORA
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc4609e975e3ecd4fbf761bd360ff0c12db5511ef9976b3f3d42c8c52fd0fced. 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/BKS342400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd0ae3c352de9253878af987454159d6e291c07a8ea6ef38106871f07f803fbd. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/BC3PG2402745.
Dá um Pouco de Água Que Eu Tô Doidão de Bala
Ela Ficou Molhadinha Depois Que Fumou um Dry
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x224a929fdc2dc589f77a00f5bce7a86b3dd4a7b1c4ee63b9305eb4f92cc39d9f. 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/QZNJV2471572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68d90342478ae9080c3c81f63d5bdb885c0007700e2d21fb98a3bacef1a02d27. 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/BKD6I2400110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81f2ebde44f476c85352962fd109705cc32c3c2c35a860d67e606f98965ceee1. 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/BKD6I2400112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x689a7020213c0838dc93d7bc37c43f8f4a9fe87c9f3bf06980f0af9ca67bd5d2. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/BKD6I2400111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeef12e9ffc3accb51303e3a4eca8aae64e203de78a797408b7fe1ec5694cb224. 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/BKD6I2400113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e7cbc7aade5e4d3aa5b626a4936512014b5e415578e92e6a3e824eec31ba337. 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/BKD6I2400114.
Eita Po Que Cabelão – Eita Po Que Rabetão
Tira Essa Boca do Lanç4 – Coloca a Boca no Meu P4U
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cc47ebc4c91e6466e009e41d5d8f68a5436050ac34531f848dff89a0b5211e4. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZNJW2505750.