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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf73cf7cace3adb9870d1892885ba6778b6df9133965d3a790957c6e5435443ea. 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/8fe88d5d-3120-43d3-831d-32b57e309096.json and https://artists.proofprofile.net/proofs/artist/8fe88d5d-3120-43d3-831d-32b57e309096.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Legend of Zelda - Twilight Princess Midna's Desperate Hour
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x063731987e27701e6deaa876a204bf9a76b244a24d6e051f9a1cc15eca499e20. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/ITS781000934.
The Legend of Zelda - The Wind Waker Theme
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b75a4a655ef6dd14223698b0383fc6228d7285e874fda8e01245b327b254343. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/ITS781000935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26467e9daa3d127d9cf4a229159d87e687ca4c07057a4f73acbf0d488fa4f8d8. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/ITS781000936.
The Legend of Zelda - The Minish Cap (Mini Boss)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27a1bd42cf65c970ee28f20e22565c63021c31427b0384f82062429f38d46d30. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/ITS781000939.
The Legend of Zelda - Ocarina of Time (Windmill Hut)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3d79cc540bbbeafdbf2571898576cc436fd7fea9c312011bd3b5691dd325941. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/ITS781000942.
The Legend of Zelda - The Majora's Mask (Medley, Pt. 1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffa0ac2f950cd246c0c255508992a64ee66592a4660b85f11b3b0ad8d524406e. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/ITS781000945.
100 Video Game Themes (Best Videogames Playlist)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dac2331aaf97ba077c1c4ceb033df91a7685d371a1061d819d2ea5041551c62. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/ITS781501300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5176c199503ec79f4ebd1be17ee47aecb6dbaf1690b27a31f7debb86d493a804. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/ITS781501302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x025534c0b74833ac7aa2b0d21c514e9bfb4ee131672944e25d98b6566f6a9720. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/ITS781501304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec0ef8449912d91b9a7e5414231b9436e8566e771c4b66b6329012b00a840067. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/ITS781501312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53161a17e0d5df6ba60f9ee8bd171e2e46c2b902591455a5f3831d656006b80e. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/ITS781501346.
Theme from Wild Arms - Calamity Jane Theme
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x303af0e19cf9d519132f3f946fcf928cc4732386b72b5a31fd7554bba791b517. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/ITS781501372.
Super Mario Odyssey - Jump Up Super Star
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1845974305d97879fe5059dd29b85e258bcee6084ac49cf2839cd08fbaa14556. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/DETL61400171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6bc38ca3dbe3e4d07406f771f06dc1aec85b45763abd5e767c03d390e96ef87. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/DETL61613148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99e82cda00a67a64109a2ffa893343de013a19557698d02fd24324a6cdcf8d24. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/DETL61613155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90f2cc143775e3d4e41b8cedc8f70b5899948718043947f2fe304a808a13eff2. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:24:01Z), 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/DETL61613157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2029bb632e00fba28ef424a8b0ca4f1cedf71820aaceb0a83af0e8f4ae011b54. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZP7F2417634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f03e6807c1d416e044187cc990bde9079049a96a6b3fea7fe279098361f3212. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZP7F2417636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc91299af91f7cab313b957468c709a8dbd648a2779cc2978e9b0bf5de025daea. 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/QZP7F2417638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe108465c2e80e64ffafb816d90a0cd2cada102dec21b692783c1335adf5d3904. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZP7F2417639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4758fbf03a212e95f45785818e3302c86115a573ea50a3691e8b1a11107f3dc. 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/QZP7F2417640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x095b9a6d58e4a9e6bb844eb627905c02b4bd574bd0300a7cd07002ff083fa01b. 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/QZP7F2417641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84cafbeffc3b376939a6e2387ac5aae5eff0679e04c0ef14a756ce29aad3a399. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZP7F2417643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ac7a9fdf4a80c5553a3a092261427a1879f7102d766d29b2306060f11c1c1f3. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/QZP7F2417635.
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 0xccab2d90fed49ce939e46399feb62cd619bf8fc4e7b46eb7ce76af506b5e4499. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/QZP7F2417637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64389b3512df48648e7c6c97bae6d9fc2459c168eb24dc9d1a4391c5fce0211c. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/QZP7F2417642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc4d2a591cab9a8a8c5f0c599a75a6d52c46126ace3d259e86337019c903dca2. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/QZP7F2416836.