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 0xf2e4225ebd18799fc1a70ff7d2bf63ffa3fe4d63a2a983185906e6f6f5f3ce0f. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fa968491-f8c0-41d2-9275-47bc15674796.json and https://artists.proofprofile.net/proofs/artist/fa968491-f8c0-41d2-9275-47bc15674796.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 0x78c624d88d7e11b85b1d90b098342330621095c425f012771d5d3c09f994d5f8. 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/QZNJV2560658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd95ded24c70609179240a9874a5e6d58f0e3135788812031feb6b4586a1d32ab. 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/QZNJV2560661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaa6f75fe1a5cf91c084f0fdc4736ac6feda93a618bb9d1ce3b87ef181da49d0. 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/QZNJV2560669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71a5fbd8fe48ecca1a1fa4416f42fac35e38f72575bc74a56f26e77069019e40. 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/QZMZ92505947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f06c15ef2dfd1742fc3d5578bc82d2ac7729b6547808470bd33a2631c68be73. 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/QZMZ92505948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20bd9cdebef542b26924602767274172920670beaa8e39b6c29562e677aa52c0. 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/QZMZ92505951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad3ee6bd76d12a949a812143c0f87323053434e0fcef49ed6d180f30c6c8767b. 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/QZMZ92505956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d097a37c62abeab81576a982238b2adaad28e2676cb3edcf5704b873335abc4. 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/BXKG22402010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x325797decc86f4873a659f81913614617239c1aa3552d02bd8a529974f6f6f01. 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/BXKG22402012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c7f7e9f02ded70b443d9923370878839f6080fadfad980e56882230a658a7f6. 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/BXKG22402013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ac7fa1fdbbe53095ac7e72ffa5025d340c9ce8d3953b1ae6c63a64e966e8621. 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/BXKG22402018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66429b662dce1e330e87191a4b94a3c28a4b8c9ac5579e5ef29d40b63779696f. 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/BXKG22402019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a40a6713327e9ed8bb3fb7fc4462cba4aa4b0b1857a2e9b10b556610a359074. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BXKG22402014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd107271365c59f6b2af9ecbf89e5eef25f0e780bd41392653db98bed60f0b130. 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/BXKG22402020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfba14cc56268ce24460d0bdd2a28e680d1c5fe0e9e01ea2a19eba92021de4940. 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/BXKG22402015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf173cd43c4ebf066dcf298c3a7090a7b17b6c8621e141261b4a906b2a87cd745. 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/BXKG22402016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c957aafde59b9b570030a1e65a7665a0731e320481b8caa69e3be33851def1c. 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/BXKG22402017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc98379ded55f81d08444bfb0392fd8e18fbae1c071fc140d470c365ce0cbeaee. 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/QZMZ92556217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd041f026de6a521573874c281137bd2f6ef007fb62643db08fb87ef381372204. 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/BKDFK2400505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7da84cc9ec2ea1b1318414654c177521ebaf28f554e818030f2d52346d26c94e. 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/BXKG22500260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7365262ab19555c88ebd272f920470b36a64fec47ee89a1a8b3fbf225420651f. 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/BKDFK2400503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda0b35f8583e5e4c48c0cfda2079ef665f2e34763e5ce3c59d6b34b54b6908ef. 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/BXKG22500024.
Seresta do Cara Sinistro Especial Aracaju, Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a0af76c74fa674135aba1ad4c1390e8e4e74eff35a37baf1c77f67869910f73. 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/BXKG22402947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbccf30d0abe860be200682af5f8fc66f65d12071a82f1705d684a9559e8715a0. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BKMSW2300025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27965e62794c1af9b072ae81f10eccc17aaa6ef29f12a93163cfa9c64e06717b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BKDFK2400263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d47aae317ab35d9c11703013c3efb6dbb92cf9fc62f1716efc960356da013c0. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/BXKG22302699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d59c7095c4b3b74d5b25d493a9637d1e47e2334d2813bf8bedc3e679f5f49ae. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BXKG22301004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0adfe97325e172b292dc881a68ed645d2d0774a3666e7de6c88b03fe94864912. 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/BXKG22201276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2836db167896b219d547fcf521885fbf81c1a2823256d4d6e35ca0314de3da2a. 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/BXKG22200815.