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 0xcd48010f631fe3113161585841ff223d9182a8dc9068b412a1a57a3053640826. 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/aeaca32e-946d-45bb-a8c8-8bca30838719.json and https://artists.proofprofile.net/proofs/artist/aeaca32e-946d-45bb-a8c8-8bca30838719.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Hardcore By Nature (Official Titanium Festival 2022 Anthem)
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 0x9661bccb97f3d970bdb2d4903cda05ea063117c2f260d248b3b8fb4512319b4f. 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/NLS202200094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbeb47359745837cf49f49ac749cb57f06a46eee3dfbb8f187105a7795e5073b. 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/QZNWX2474004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfae3c3300b6979ab50b8c66fa7851bdbc2ffc7b9ba0605610b05387e4fcb8b8. 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/QZMEN2471926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d895f9b43f71b223468bdeda9aaae9d492f9f152842f978d89765f6a8a5ef15. 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/QZHN62498280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8950a1badb3896a76c3aceb99cfc3171362aab92cb595a33b8a18488f3b1cb20. 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/BEB682300461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08d101b967c272e170848c4c8d1f939217d21725d6b5055d6359e92728b43c80. 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/QZK6J2357666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff6925acd61b6bbf09e03f77ee6b35b621199a17e557f0bee5b67b442c80a3ed. 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/NLFL72300311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa320ce442c655712b338eb89ab11b673736a8d31d832270386dd215f838625fd. 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/NL7EN2300034.
Trip to Holland (Major Conspiracy Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86a0d4b61c49ed5066a497a3f75ac8dde6391c0420fabf9164a0abc374acdaa7. 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/NLH2L2200409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9207c29f77edbd6b3d90e658bcea3448ffc5eb37a7976272b3224941c25e32b. 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/NLFL72100831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61842aa3b4cd9f06386d933bfaa4ef8c2f79b8440bc9c79531469ecead39435d. 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/NLFL72100833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9283d217a4f14c0bac000c4b005c14b269a6725718af494458c0519863d1921b. 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/QZK6Q2151326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef89a5f783199982aaafdca50ddfd33b5d5c864c083af85b37a8ea587b8bc018. 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/NLS161802667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf942559f03e1bda5ef3322a57126f5dd2d0ef7182d091c6b61a06252171ad76. 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/NLS161802398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e98b4f05cdb6372eb959115054b1e3cd513e1eb18c132a0e3dceb3d4aa94f9e. 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/NLS161802158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf52d3327188f33518e92a391eef9e6ee734db9df87ec45f5f89ec25376009c93. 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/NLS161802157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a9ba9e915166ec22924a532008d462c3936cb6cdc0e30413bc482599e8bd2b7. 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/NLS161802159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf84e2fc11c66be1b986bc92d168a432b867c93d8d2563b49663ac87ab7a22b1. 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/QZHN91927488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa3290b3dce4d9b4bde5567675af45e9fb57b15b3c78a3db094131d318afe01a. 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/NLS161801911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5c0aaafa5364a0ac5d1f2010c353eb94a8f5d16b5bbe7bc8a6cab91a1b98f03. 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/NLS161801912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb82d0b1ae9863a56ba1f7b67cf27f79f67cd2c974e4da7764fd278fd7c6d203. 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/QZHN61978586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf98e5e41f9a5b9aff1b67ace3b21c77e336c5948cc9281abeb165783b901f6bc. 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/QZDA41935304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefdcf79f7c40f45323d9052aba179ae923531e7a65107dac3a5369a0a3c11529. 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/NLS161802574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d895f9b43f71b223468bdeda9aaae9d492f9f152842f978d89765f6a8a5ef15. 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/QZHN62498280.