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 0x8037d9099187f505a6686fd211a1bea1ad2425d91cfccf7de56a4855204492f0. 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/ab845c5e-47b5-4ab4-934d-72f05b47091d.json and https://artists.proofprofile.net/proofs/artist/ab845c5e-47b5-4ab4-934d-72f05b47091d.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 0xafcbc873edd1220aca5092e9e2c898216821cc04626ff71982716fcb0c716a32. 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/BCVP52300036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac0cfcf8dff340e7bfe66662a9b869c3a2a23c797603b65c8e1438ddcc527a64. 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/BXUXO2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25c91f05059d8a0e7524ce1de29abb0c95e9dfda2fd180ecf39e9151e4480159. 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/BXN5Q2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34b0692bc6ef83aa8d77a3e4fe26246b719dcbdcfc69acd1c7d590b2ec536101. 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/QZ5AB2205406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee9c01e16ed18f487d0c1dc8c3be2c0fc1d1e81b93879860f3bd1df92ef0ef19. 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/BCXTT2200027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe396bfc328ece4dec811978b14a56e7312cfec36f39dd8a746457f800d65e32. 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/BCXTT2200018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b924375140c7201f6329547660ca846796e81d41b5bc3e979d2a0fc3bac7d88. 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/QZHZ62142049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x135dafb5e62cb056a67283b4d782c677db909745e18f4b5d3a3521970a321727. 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/BXUXO2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c186dd053da0dabdd11bdfe8b1e723d7e2b0e51f8950276f435bbc7641813a2. 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/BXUWJ2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab96ea026dce16f90207011d07b212b8985694d72f2b1304ec87997b37e86667. 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/BCXTT2300031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29459598769a3edaa91b156b660dd7dab94b267cff5d978be50dfa03c6a235c6. 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/BXIED2200044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40d09f336ae24b8a078acbcc900865d50b4ca7b88e8fa35aab14fad318f4c369. 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/BCCNG2200078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17da221020df131fe524c8fc17a8132f392e57bb6b08e06c55e4bc89fc8236d9. 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/BCVP52100114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x135dafb5e62cb056a67283b4d782c677db909745e18f4b5d3a3521970a321727. 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/BXUXO2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b924375140c7201f6329547660ca846796e81d41b5bc3e979d2a0fc3bac7d88. 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/QZHZ62142049.
Vida Louca (Bruno Be & Breaking Beattz Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98639beff9210ff916c4a7effac938e96992c656bf2ea7e959adb34310caf49b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZHZ52144106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac6ac8c59b99ad08ccca5ca220835ca2e611a23a856bf3764606270591b8a4ff. 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/CYA112000696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcf0a2a514b12a2817f5dc86cc2c7487f6d53a67bd1fbea014e64532afa69b77. 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/CYA112000338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6d8f63ec0c00d3fb461f009bafc4d0ddbdf699e233cc44893dee6fa1653dd61. 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/BXHBP1900429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f1c3921e03e8efcba8f856dc780bd9b094d0024a6b5356dc3cd71f7d08174e8. 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/NLZ541901396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaabb520e5043e120919d6587b958aaa2ac0ab5b90c783a7f78cea71c97eccd05. 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/DEUM71901704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c097577c05c36b0755c66f7f2fe5ba56331de01b4e27b17f13b6a88122769a8. 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/GBKQU1920057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0510633857eab9b5eda369631cc12251cb42efafc1f0ecbc58533496c9210e8. 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/SENAA1801401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf32377ed66b0d08d630e781dc9455dbe179f5070855ff2bb674e7497bff1e5bf. 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/QM42K1875736.
Higher (feat. your friend polly) [Remixes]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd673c435815fe50f23574055a17f37940f2652ee1f93e231480eed8fce14a0eb. 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/BXUWJ2500015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc59d89fb9e6c270e822736c091c5bdbf0fa36b247b5b23ca6aa707db69ff9375. 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/ESA012527823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe47006a20c2904c9677ca1ed5e89d50675356b9ce2fae4e559cde2d71b25781a. 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/BXUWJ2500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33ff1a0f5f1b330dc626decf4155ad37b6c1ebeba49060c7148ec3b13bc2ca12. 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/BXUWJ2400023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6a3246b2c6e09f3d1dbb09b37221559d5d1aadc3755384c2f1c2850a921db13. 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/USNRS2443420.
Higher (feat. your friend polly) [Extended Mix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68fc50944e558354f6469d499edd35a6fcc61e563f96fd42bfb5f852ddaaafc4. 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/BX7P22000026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafcbc873edd1220aca5092e9e2c898216821cc04626ff71982716fcb0c716a32. 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/BCVP52300036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fbd0c5afc3efd6f026976775a22b1988b37060a7741ac776734fe96d0ab445a. 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/USA2P2306802.