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 0x2bbbeda4b04d17d4a34f76f49c5d5d4301152d2bfcb6611d1b120c1f37ee0c18. 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/b2831616-0e38-41b5-a6fe-441ae6a14e7e.json and https://artists.proofprofile.net/proofs/artist/b2831616-0e38-41b5-a6fe-441ae6a14e7e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
É.I.Q.V.A.N.T.D.P (É Ironia Querer Viver Amor no Tempo da Putaria)
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 0xea20448f3735d1a3c07551b71842308e33eec0ede4b72da70687a9047d899ee5. 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/BX4II2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d9176e2380138f54ff865fc050c642436c8a6e56fb84fbf1e39de6b816d255e. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/BXISM2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03a4c54425dc13425cf01f9d93e29b2b1044a1aef755bd250a22b8d1514b2bf3. 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/BXISM2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x791bbddec69d0d0c81aa51621757d545ccfc5c366da1e5fedb9440baf6f42a70. 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/BXISM2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf518b1d9a7182a724e26a2951697b5d24b79b781cea2544b6aa8c7167aabf71f. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/BXISM2300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x075557afad343018a40d71dd5fef2e981304d4cca6b9ddab593244013a3a8cc1. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/BXISM2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3382eed86edc0427ea9b542ab0c500c47fe00160e183cb16614fab9a4ced0914. 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/BXISM2400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcea17e8715007fdd339aa9b5a0ca4dff714983ecd48d59761415d1f2d9f69f7d. 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/BXISM2400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a2c00d59830c9c93146366e1466e6d92f466126aec9ddf1610e4788878ca8cb. 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/BXISM2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda88a5417aeacc8edf21e4e2a5ce56d7c952fbc614c7bad80c6bb569deade63f. 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/BXISM2500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcea8b18744d435d9c361dc821267a507438d9feed9547bb70e0077ed856002c9. 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/BXISM2500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x652534fbd590bcc9d8eaa5ea103b41c6f8b150302a622b2e3f1944da78b6b6fc. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/BXISM2500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29bedfef1a48fdea988e490cf27f49082cad3b16b6ba30bc9dde3272f83f7b24. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T07:27:09Z), 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/BXISM2500014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6be8648ec9f5b0a5bdfc05390218e5cf8ebb76cb468b0b541afbdbe3e0811425. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/BXISM2500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26b7b00f25660babb53d12df0feb0e7f1d83608a4e1132f6eb60fe9e247e60db. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/BXISM2500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b869d903ae4ea5cec8bb68c867b678d27a351e6e63990bc8c5bb2c8ad829bea. 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/BXISM2500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f7214df49c493d559cecce717ac3ea7cb7b4001407d208eaefadfe0c9dd6308. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/BXISM2500012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cc0a512eba15806a5edf3c0bfcc92c01e38179e75cf53459f66d7d050d389ab. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/BXISM2500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a56024802e550854b6a1eb9363dd4fb9f882d290e5fdc6a5cb6511d4a19482e. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T08:14:15Z), 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/BXISM2500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f397c34443a5388a2f0f4ee0b8c5b7b3569c5609c638a7709adbb4bb2823706. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/BXISM2500013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x665eb703be178ded983e7dc8841bf03c982e2f31579b6547a78587b3f660ad2a. 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/BXISM2500002.
M.P.B. (Muita Putaria Brasileira), Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67e621ad83297acc2a9fafff095775d1ec68ae04851bcbb266c2dc32c1e87bb2. 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/BXISM2500019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c27372988101941322e0d17f3c3a1f4104ff6fd7376dd9673abdb0b612e83b5. 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/BXISM2500016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd45741c63ff62fe8dd1b46504c026923c3d97fb40fd7097d1f3963a6987a7496. 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/BXISM2500017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe72ca4a68c8c4753673e74557e88a3392cd6f7dc300737f74bf294057098d169. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/BXISM2500018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb44940f31b729d954f63fe48dcd70cb4de97a9333407732fcc93f71154c0baec. 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/BCULS2400006.