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 0x1f20babed5644257207023ceb3a3fe0a70d1a7acbfe2336927091e72ae572ec4. 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/3425da1c-ef71-44b3-be97-a039e5016731.json and https://artists.proofprofile.net/proofs/artist/3425da1c-ef71-44b3-be97-a039e5016731.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
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 0x76caba6b940c7e945f74487eb27d7b8b7452eb6993ab32af0b15c42cf70fec56. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRR642000634 — a six-check JSON result.
Cha La Head Cha La (Dragon Ball Z) - [slowed+reverb]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8d025d0255be9ba00c7a5b29c966f6c1142973648a0a9b0098d25b2470b6181. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRR642101190 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8d1fc61a6cefbd85db569f3ca799be6fb1e7eb4a0079b34cd3dffa95d0fd32a. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRR642101181 — a six-check JSON result.
Fukashigi no Carte (Bunny Girl Senpai) - [slowed+reverb]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5134ff5a2d3f752c75a0d020cbf8ec3428311033a77689eb24591e42dcd0acf1. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRR642101184 — a six-check JSON result.
Dan Dan Kokoro Hikareteku (Dragon Ball GT) - [slowed+reverb]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa62bdd39f8a93d48bad14d50e0dcc30a089d3e6e93d5235a9b87ff1f3c165844. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRR642101185 — a six-check JSON result.
Kamado Tanjiro no Uta (Demon Slayer) - [slowed+reverb]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe545aad67e848af35d1c8ec7e6bf660d534176508d33c7b395a4617d522fc294. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRR642101186 — a six-check JSON result.
the WORLD (Death Note) - [slowed+reverb]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1634744c7645a6e7bc9e31a72e7a455f589af0ffcb308b3d1586b5769efe9679. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRR642101189 — a six-check JSON result.
Silhouette (Naruto Shippuden) - [slowed+reverb]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ca7e1292bf55b95aa637042f4cec5693cf826ea943e79bf3f3c2744094df3ae. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRR642101187 — a six-check JSON result.
Kaikai Kitan (Jujutsu Kaisen) - [slowed+reverb]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36c584be0c032689a63e1a2956d8a6e384591ada1dde3f184b9794bf78abcc66. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRR642101188 — a six-check JSON result.
National Park (Pokémon Gold & Silver) - [slowed+reverb]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0700e93ac64baa49d900d656ff64d2b4dad193db0fab7663281a1e9b10df2681. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRR642101191 — a six-check JSON result.
YouSeeBIGGIRL (Attack on Titan) - [slowed+reverb]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e02d0e64ff987237a08f743d0994ee95529667b475571448f34385288c0f5d1. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRR642101192 — a six-check JSON result.
Pegasus Fantasy (Saint Seiya) - [slowed+reverb]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6922b2fc4b03cd79360c4d6da673d01238e2bb95b67873ddaef47ead84c655e7. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRR642101193 — a six-check JSON result.
Bloody Stream (Jojo's Bizarre Adventure) - [slowed+reverb]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f1ece5a6a5f2cc53f872490f0ede21c8ec5e4609f11bb026a41d7e5fda513a7. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRR642101194 — a six-check JSON result.
Lost Woods (The Legend of Zelda) - [slowed+reverb]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc562b7a86f70136c7be3667d9fe19c5f4fe3eb50f3358be20fa05dbb09c03bed. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRR642101195 — a six-check JSON result.
Cry Baby (Tokyo Revengers) - [slowed+reverb]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14ba644ff42d6af222bfd225c4ad37eb1be6d28b451c643268d4ec74d0239d33. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRR642101196 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2546652705325c601d0abd290fad96f47db5f0d66e915f5347812441af5f24e8. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRR642101197 — a six-check JSON result.
Violet City (Pokémon Gold & Silver) - [slowed+reverb]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x379414615caff2cb0ec9761eb0a28261b49bb9be2e319b0bb0af0282915cda3b. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRR642101198 — a six-check JSON result.
Fairy Fountain (The Legend of Zelda) - [slowed+reverb]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5f283b0ec2554ce47ef1b6f11fa3091c1bc8602e470b1fc17ca7ee9cfbec9cf. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRR642101182 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc562b7a86f70136c7be3667d9fe19c5f4fe3eb50f3358be20fa05dbb09c03bed. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRR642101195 — a six-check JSON result.
Rosalina's Comet Observatory (Super Mario Galaxy)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x212565a4bbf54c3b91ffc05f85daf6ef50ceb8f503fdf666e9ddd805eda1193b. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T16:43:41Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRR642200966 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1347035b8266cc1616dd39b71794f49aa120afe3ea9b59f12f008f4968a8aa2f. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRR642200969 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6aeed754cd48aca4c0694bb2188531f88329fb1f4118f6547b30a0602061e66. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRR642200974 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bc194ae7e534ac2ed448ed52d89c1622d1572a4b672cf0fd0bb8413a9b01f91. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRR642200977 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d2704813b927efe376e8926ced45480501ebf37aec3141801425ea1c71e75da. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRR642200978 — a six-check JSON result.
Professor Rowan's Laboratory (Pokémon Diamond & Pearl)
Rosalina's Comet Observatory (Super Mario Galaxy) - [slowed+reverb]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d0bf361547cf1f4636c34b99b0c8166533714cace1e1f1dac6828cf9c263b1e. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-16T21:48:38Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRR642300800 — a six-check JSON result.
Lake (Pokémon Diamond & Pearl) - [slowed+reverb]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x456e015fa8091ee09da87c9b4671bd17b7c07e3c356a3234281d2c71eeb13100. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRR642300813 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dceda8c90775ed294d54fa20078c1d9ba02afc8b4bbb7df792ccc44c5c53a6e. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRR642500232 — a six-check JSON result.