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 0xa1c2ff8b5fbfa59295565214fed1f8b3a72e6594fcc192c1ea45b3ded1e4bf9f. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d4a4f2c6-b3f1-4011-8fbb-1922e90ff4b1.json and https://artists.proofprofile.net/proofs/artist/d4a4f2c6-b3f1-4011-8fbb-1922e90ff4b1.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 0x3f940ab8bf6ec2d368874ccbf0e03de9426054dc86c84f2bbf7026d8685143c9. 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/SE3AA2000018.
The World Can Burn - Game Over DJs Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69bdbca801abc1ec27c0726b8f2024e1238edb176fba80a155d0844098a82369. 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/SE22J1800028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d57703b8ba773342e6cb97c24c3659770265d985795c9d50647e6a3ae23626a. 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/SE22J1700007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac018cc1e3257f5f33f0df2af844c31873d25ce21e05af0ca3e16d213f23e666. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/NLUW21900862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x973b99968e3dc321e1595f50118981f3260ac0c4e627f36d450126d0bbe95237. 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/GBXGT1700118.
Nicky Romero presents Protocol Miami 2017
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76bcfac84dfdef5634366b8f2c75d6212b6f72171bbd7bcf2d0ddb9b310b74d5. 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/NLUW21700512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb637bf6aeab78f1b9abd0e540d37aeb60c386b566bc189d6967f5b8082d3803. 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/NLUW21700514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd316e85f95552075511f360bcc699414ca728d1590a625facbabd9f7a53a1ba5. 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/NLUW21700544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x953157462e261d58df450f0cbc9dd91457343a4792aec51627f57a149852ce3a. 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/NLUW21700524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fb48d411f127ffae28ee26dce3f77e4713495df93e0a6730cd0372904e436f1. 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/BCZZU2500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ef81be227940774728937b87f3f7d0479cc6f5f23a40b9c1c112c3978330880. 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/IL1012302070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42cc52a3bd4e24f0cf2fd18b1d7119d7503e41c0a55eb08d799e3ee5e196014a. 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/NLUW22101321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b1826525ca28cf40a3a1baaac3288413acc60bd4dcce1d351e7d063024a041c. 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/NLUW22101299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x627a841c84ab5461f977a24e73c590a95118b092dc0c565299d4b6f1e5a946f7. 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/NLUW22101300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40829b1d906caa5c45d97f7c29b575e8675845c27e69f4a3846180a9c499c4e9. 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/NLUW22000978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd28c7099a4bd8e7541a4b103c865dd9e88d8883d80edbb8527a9c768b134ee33. 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/NLQ8D2000024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a248ad999835957c8b05119183c23bdc8832a1392a0927dd594e62e8afb5a9f. 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/NLUW21900926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdee63a758378d2e8e804465abe90c81635854a6296eefc491852e07054771148. 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/NLQ8D1900570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e7f0b2d194f2f6f2fae31217f9ae9e0315c46bb70184118ec335ceae642e1d5. 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/NLZ541901461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f224698670b5ab0a447f33e978c39832ef4c22feba24c030fed6f3e740bc307. 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/NLUW21900799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc8fcbbf280914f4b370bf8c082cbf22f0470ad22fa26854a2e28445544d050d. 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/NLZ541800488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07de80b11497d65b990a517117d6939a85939b68020a5d475e3b842e12839c3d. 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/NLUW21700590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77fd308745f44edbe850648b5e2e95fece364c1929fd4eabed5ef883e82359f5. 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/NLZ541700119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc20a4229043c4bd25d20d9bceb83c7c02918adf6bbebe07256f08eb7f9ee740. 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/NLBV21600028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb459eccb4c38df7c4a1869c2116b648398f3a618335759cfa1c48fa21612b6a7. 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/GBPVV1501246.
Heartbeat (feat. Yasmine Shah)[Sylvain Armand Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b1710585970c129d1cab78a7a8bb26ae7be7ebd0a6d72daca833ef4600808a9. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FR4E41611290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb63ae40d7b8c8406ce47a0b8a5541cd74ff55c9271152e425e782cd52dd7f754. 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/FR4E41511270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2b5f6d2f089152502a89d3163dc139d524bc3b230bd571371553a95c7cd2cd4. 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/FR4E41511180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x904c3dbe1096f78d1357e05a8f352b0f5d48ec3fc72320a71a6efaaf06bb56c9. 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/NLQ8D2100025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21ae2e132324bd251e4a92d1de2d9c113fe8b2c933132d2e98264c2111ef3be6. 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/NLQ8D2100090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa012b08eaa148443997be8fd2ffa7b7659d3467b38b1e0f1d01e6d21c9be5412. 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/NLUW21610001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2611628e7940e07f314131a1515da1778d1fce68324462ec34b9c19655feffeb. 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/NLUW21600375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49b30596325d846688dee61aa25b9e9b3dccc1ed07a395185958b4fc69c4d925. 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/NLUW21600387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02df063e7237f1299278ae1ebafa8fc9d47a792c5366ae76de9c461fc4e354a6. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/NLUW21600402.
Protocol presents Miami 2016 by Florian Picasso & Blinders
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x990c268a2b69b1de108617fe7ceb3eede1e37feb789f5d3c86f9098918c024b4. 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/NLUW21600281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x677afefe40ffe9525e20dce6ff7d79a17872b2878eb7983a4e3bad3647671ce8. 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/NLUW21600283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47b1eb75a1b7b35507d7092ba8eaa3f717c4d74f8ad362df1ea760fa0cfb90bd. 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/NLUW21500329.
Deutscher Fußballmeister ist nur der BVB
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9662ea808f25b420ce13d0723a9c9794d04328e8e9bf5a4b8e84967b6274bdd. 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/DEKK70800072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3168258b92deaa39a3c42fd5d8f7308b42cc5292a4a142fa1e62d573a402e19d. 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/DEKK70800069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x257bf4ef0512c11b50c210717575a886c96988ffd01958def96967d7961b5567. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:37:34Z), 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/DEKK70800070.