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 0x21bcd651ab4c6a94bba9d26a2e789ccfb49bb30a1c52f26d9a3f311e0b388d9a. 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/6576be77-8bef-4556-9357-82c03fb68782.json and https://artists.proofprofile.net/proofs/artist/6576be77-8bef-4556-9357-82c03fb68782.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 0xa4dff74a4d32df67fe829da1d8d16f53bfda5c0df03e5eb692e47e0d97ca31b6. 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/QZWFE2471216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6612e38124e575bfa05466362619e325172bb7c325078ddf8084910eac336af. 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/QZTBD2454039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc668f04fc24082ff7c28a8d22abd9430d3109cf8d10cdffe19edc1db19f13b0a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZTBB2478704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcadafbffe6766b5eca04f4ead66f6a389c5e48c6ceee83ff7e241c7649edcfc4. 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/QZTB42498117.
I WANNA BE REAL (The Amazing Digital Circus Song)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96731c58df2f3568ae222c8a9ea7bce1f8611ebdbfa131e81541395f3f56f1f9. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/QZMEM2446567.
Ragatha Rag (The Amazing Digital Circus Song)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6455033bab9cc6d320f596f1e9d00a30c3828c8011f17aab55eaee8772108bd. 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/QZHN62413178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea4a63920fa0035018b7c4a49f7f84a7ff2db772ff63b4fe3432e21cfd35a9f0. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/QZES72470824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05c4b080f2700ee40dbac2740dc8118fae812b7073ade5764888ae9058a00459. 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/QZTBF2391358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bd65295ebd133bc6e9c0464c4b18baeae52cddd2fd0b1cba686b3c5068de1b4. 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/QZTB82320431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb6486f678eda9cfcd644280a16a604294d5fb52867fa1da4ff2e93fef7f4fe9. Chain 2 (Bitcoin): anchored in block 957011 (2026-07-07T08:25:35Z), 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/QZTAS2385012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6c011f7e79227e6e05931e1cfeec91cbdb3b3e0868c98431a71c9ee707d959a. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZMER2300114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d5dd9c99c571dd260c7e8aae1ead29ff84fa76c1f5b56af6ca16a3733c7f318. 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/QZK6J2387991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x867dcbab4cff7f5514dfe3e7e8a25a7ac0707817809032df4b85cb2b89434225. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/QZK6Q2302950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdf93f99aa0ba629fb77f1ed41779d4d22d86dee2bc018a2eb4bd9be86d3bfd9. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/QZES92395916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x983d4a18f2a3c3c51c796aa5c72b4a7b40a60ed38e05ff341f30f7b68cd6ec5b. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/QZES62389034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64db6277b68b209daeb69e074c56eb057fd5d4b466a85ac2ccbf1ee5ea46e0c9. 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/QZFYZ2316340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc331c06d874eb235e287cea7049c5ee244fccc9c1dee3357dd1125bf6a3cc3f1. 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/QZTB72236065.
Cassidy Rap (Overwatch 2): Fan the Hammer
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09e9af30eba004ca5c619afb912ce6a9cb99dce37c515e60617a1757c4a145df. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/QZTAY2273070.
Close at Midnight (FNAF Security Breach)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6cec1fcf87642eb52b70a92b0e707c0a008c67ac5492e494e3d206246a77fa7. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZTAU2247897.
Satori Tendou (Blocked. Blocked. Blocked.)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x172c49f4c9f5dec1d8972c4d8d6a81f10f677cdfda287287d1ca38a5c8fa3f10. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/QZPLR2278657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1af8a432d647c50014dc5db203a4f10df76ebcf6a746e78ec07daf894c436ee0. 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/QZNWY2203049.
Bees in My Fingers Electroswing! (BioShock Rap)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x839dab97f23f96a4b5627c4735cf7b33b03740c22295f40f3c696f626b30aea6. 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/QZNWU2284900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8699fa3626f84539d38fa7e6b9841cb9e35119d1c65749806b0d543bbf4dc72. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZMEN2219079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x944220e4bea03897ff8c52232f5c346a6696804485fc28337c180e18e589c39f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZK6J2218591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4de33bd59794e9e42ce21c652b0ced0de963a5793b98bc7b09c31f239efe507. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/QZK6M2208937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96046b50b0b3853d822f7f72336e59bf7ee45d3a0e65850af62752418249c891. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/QZK6Q2236112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3319c9c55a6ff0f3f6af2c1075daebf64fd8d1db8a29c136244280453181441a. 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/QZHN82200781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd922f12c87d376c6a266bc2d4d057b9e4b7a94bff3252a3f76220447131f068d. 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/QZDA82241636.
Viktor's Lament (Inspired by Arcane: League of Legends)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fa259342a36eb03b7eae09bb91e3fdc551d51eacfb10de86eeb32f538a61e3b. Chain 2 (Bitcoin): anchored in block 960430 (2026-07-31T16:09:41Z), 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/QZPJ32143910.
Cult of the Lamb ELECTROSWING! (Don't Call It a Cult)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa930cbfe3c6f8ca0ae665b350393ba1094db9e552bc2cf7087027a46b821f2ee. 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/QZK6J2547603.
Murder Drones ELECTROSWING! (Rotten to the Wires)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5933b2e3356672be90115cdd0b34d2b19a0f76bc054e2b6ef177265ab71d80d4. 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/QZHN72594804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x986e1739a19e8813f0266e878674c300e912280ad8b8fab01356a77cb2095a99. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/QZDA52586332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf935769b7802606d076e6e23559f66ec5f6fd9a99fab61ec9779e301a10bf3b5. 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/QZRP52531484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x293e63584cea5ecabc88467e086cd905de116f7d40f7c30c999dc8b9b3d8aa01. 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/QZTAT2485547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c6c5d10952dc522abd14aaf87c60023ae9a8af5566d3012907fb76381df6579. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZNWX2199405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5095d2634776ed8e196e86ce67d0376d7250e2e7317651758b934f4675f40697. 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/QZK6N2274891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc67c5b0dba63c73a25e809800416e8866281c91f1cd0a6b984708e4351d8598e. 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/QZDA62357420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5444ce0e59f96f817639d4296af74f4bd6f17c1459a18c3f66d66f301398a09e. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/QZDA62357421.