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 0xe74032180bf277ac38f5faec4e249abb8a414733fac3e7eb2b6ef92c50a8b4f4. 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/5d705c8c-8066-4624-9b21-9f229e2ee9ef.json and https://artists.proofprofile.net/proofs/artist/5d705c8c-8066-4624-9b21-9f229e2ee9ef.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 0x527d62effb36cb78170120fcd79b320315350221a9ecbbd800d5475affcb2dc8. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/QZW9K2367139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60e5e6a9fa60a2cebcab2c73b87333111041412c8d163e914b2d0f2676f63323. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/QZW9L2315513.
Eu Te Divulgo na Net (feat. MC Neguin Original & Mc Brunin JP)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3044e0cd07609cbb9a5f7ce40f0c82e4760b6f33f02d6d6b86ce5824595a6b9f. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/ESA112428812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1940642f052e9a4c3ac45008e0bebf49c02f81de259e49da5b305c3a4c84f8bc. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ESA112429692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77f17ac5579b6e49943104434f3b7be142644e82a28b4a601960f7cd162494bd. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/BKVH52400064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62d26c32d719023f55ec3a150654d9b6828addde6da3078e3f5a43e6df511fd4. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/BKVH52400092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60b6b25e8f684d961ed75d256e8f77962bc322f237824b3e7d8fddeb547e7b38. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/BKVH52400112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fe05b3e895d268a18cb29c598d26a0065a90bbc5c0b03e26d2978dc84a406be. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/ESA112444303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e6b0e2ba37f4978b9ab8f132f653f793c63593882c38a5f0c0845b4d2ed9456. 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/ESA112444304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbfc496a4afa503f05b27bf5fe27752ed5d845292f5c0fddf3b4bede153b476c. 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/ESA112444305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8ea2039f17bbe389efa51cf8b8f07388ee3c5fb7413c6d5f032a4599e9e383c. 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/BKVH52400113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a5bd3a963ad4dfacafdd319dfbee226388bc2fe4fc94f6555e570500d6e7572. 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/ESA112444306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37e8b8cffc6f41edf0914db717b9b184ec02fdcb14878b66d3b19613e00299d9. 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/BKVH52400114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8958dc844035459eec75b7e1a7a0141a976084d5870fc2a659271abf2ed08e14. 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/BKVH52400115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc881c6e6286f4fac2d82fbf9a399376f8f3d8dff7ffb7630c41ab903e79ef2aa. 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/ESA112449428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfcd1cfce91f3b385dca033ec5cfd8616a88c5d72cddaeb6ec917139971d3621. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/ESA112449430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ad293453c69f9b12c6e084c5ce23cee10852470deec05ff37a7453055376ad7. 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/ESA112558292.