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 0xb7786b4b6e648d47fb171e72c9d8f0b8e46a3570dd57c16e7e46a67b24abd916. 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/84cee9d9-285e-476a-bad1-8c5bfbe3a679.json and https://artists.proofprofile.net/proofs/artist/84cee9d9-285e-476a-bad1-8c5bfbe3a679.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
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.
Super Mario Brothers 3 - Overworld BGM, Athletic BGM
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0aa6ded70b47fb9d80523d7436472bf2fdcc9639addc9be62e4bb93dba17469. 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/USTCZ0928569.
Castlevania III: Dracula's Curse - Beginning
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0ffbf908ff46fa1c6f304cd358b09309b20300e04f434de7f5ac773be9fbcdd. 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/USTCZ0928575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cb17c3166ab8064990824b219ac5cbc1eb956a51a4ef3cafd154ae99f36b97f. 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/USTCZ0928594.
Sonic the Hedgehog - Boss Theme, Marble Zone
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa01747448201a4abfcd7fcaf8d788ecba9c38b205faf0475d0f1493e6258d636. 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/USTCZ0928601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ed99628fab3868dc48d8afdfdd8f9c2295710cea145feca94d550d0ecb0d740. 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/USTCZ0928606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5428d85312b463eb24676cc1faa2d2716a48e86ab61aa392e15ac56b2154d461. 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/USTCZ0928609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x826f8927ecb67c00730717fc70b3aa855e6e6925ebe5367e07fd68d11f0838ac. 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/USTCZ0928611.
The Legend of Zelda: Ocarina of Time - Gerudo Valley
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb8ab644615269657ed6ffcbc7813107a20c50fbc83ccc4b50e43d4aaf676f36. 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/USTCZ0928614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6affa510fa7171f6189899b8210feb94f2c8e6623e1c523a887a073ac480103. 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/USTCZ0928616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb98dcd3d81043b52daf81c82b8edd39e73af75c1b27eace684b332655f780da. 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/USTCZ0928620.
Super Mario RPG: Legend of the Seven Stars - Sad Song, Forest Maze
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1589f925193811bcec455152852e5f9e999a25f86cf173414acfbc3b2a433184. 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/USTCZ0928626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfad180e0bd73b8aab8ab6e4fe9ab66526e5cb6310ca1bf0edef0aa765701083d. 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/USTCZ0928628.
Super Mario World - Overworld Bgm, Ending
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa3e6c4330a7c87b7a9ab45a4868596b4d3ebf54e5c1bb006666eb00286425b9. 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/USTC60845883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50e286cb2de780647bfa607a8f2d8476ca349f0cc1580346d442de96d67f29eb. 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/USTC60845885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9511ac4fef513f6c7c82b257775ae5416504283405e60a6f7dffc0fa77af4964. 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/USTC60845889.
Donkey Kong Country 2: Diddy's Kong Quest - Stickerbrush Symphony
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ac95826de9e77ddd587616d73d8f79632772ad9efa9c58cb4d13569acd1922b. 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/USTC60845898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e3de9ee0f7b314541ddd265270fdc18df7286fe5d5b88ab721002a9d540fa9a. 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/USTC60845904.
Sonic the Hedgehog 2 - Chemical Plant Zone
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa75db0ba0f9932362136c207471e2e634afa08aa167d37541424263cc547159e. 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/USTC60845930.
Super Mario Kart - Mario Circuit, Rainbow Road
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b2e4b11333285d9c0a14b417b4cb5f3e1fab4861cf8e3574776d417459e4996. 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/USTC60845933.
Mario Paint - Gnat Attack Level 2, Save & Load
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe538e3c912dcde33cfab15c507a8f123a9d2a02b95ad69fd611a91290d1baee8. 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/USTC60845937.
The Legend of Zelda: Ocarina of Time - Zelda's Lullabye, Zora's Domain
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfd8c783d99630618f15919504cac8d6742d670b187757578782c7fda2d9982a. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USTC60845942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb5ef7c924eb61458141ba7d0daed0540ee7e5083de6b3035e325cf4a0f74a65. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/USTC60845900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38db95981b0fefea2447941de91837a20224a3cac28e369bc6434be2b523f1f9. 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/USTC60845918.
Spider-man & the X-men: Arcade's Revenge - Gambit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x650bac6e12e36cc11a26d15824865499908f5fda99db1a3a93fb58a39c80c0b7. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/USTC60845935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6779a7a982a263cc2411ebf0a1f790171d0f6a9749e684f3f726f636c988b756. 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/USTC70867534.