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 0x106e3f40164acd2232639992e58da8e32709a24344580d61808390195cc2c464. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cb064f5b-ef11-429c-bc42-70e0cf9ea0be.json and https://artists.proofprofile.net/proofs/artist/cb064f5b-ef11-429c-bc42-70e0cf9ea0be.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Far Over The Misty Mountains Cold (Adventure edition)
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 0xad19aa7e7a672966e28d2e27dff5178f281d43dc248af819bd6406592df4c5d5. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6H2101090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87ce6ddd41a1e4a3a7d8e515fbc852896865e67f2182563188bf6b72850b47d8. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZFYY2204602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a404f2e1d82e61b0e108c8d4c18a5f1a0eb7134d25f467c88685361a61f4ecc. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZFYY2204603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x152937b16db0508429052f5e8e881aed5742330959396c78ab780840789265b4. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/QZFYY2204606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e7e71b663c80e38bf7f57d9371c362bb7b00a8a11484c54e4d0824b4b34b4fd. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/QZFYY2204607.
Inosuke Tanjiro and Zenitsu Epic Entrance
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d565375bad5315456843a68ffdcb8c348705e27b10419909beebd973df6d800. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA52201240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x867e9d0cad0901f5c205d455c30b6f927e475b422508de20653bb45c8f523c82. 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/QZDA52201245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95fbf6f21181a68a9e8a8bb13bbb9a5ef59bc78950086670ef1123718dae86ab. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA52201249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65948d3599382f9dc9324971947d92922bfc880e7a8d6c207837c474e9a81cd4. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES62299057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e8cc5d780bb1d9dd76d5ba90b40bc57fdca5e3b14021f39d7f8f4489eaab552. 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/QZES62299058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ef578c4059b22709a2d088c501d3005bede6d7882fffcdde4455e8dfd2d6835. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES62299059.
Infinity Fortress, Vol. 1 (Demon Slayer)
Luffy vs Rob Lucci (Drums of Liberation) [Fanmade]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5870e8696b18823b521d6ad2468c391efb1580aa59feb4e0e9854774cd7b782e. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZFYZ2333899.
Muichiro x Mitsuri Theme (Demon Slayer Season 3)
Kokushibo Entrance (Demon Slayer Season 3) [Fanmade]
Muichiro vs Gyokko Theme (Demon Slayer Season 3)
Demon Slayer Season 3 (Sowrdsmith Village Arc Ost Collection)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5c3c3dac927957fd880d661e8ac9c24a7dea3d6bf5bff12c59e448e78809a79. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/QZNWT2354136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6c02af9ef66b174e76a25a56686c39abcef37f42ac3af62905b6b60d287ec71. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QZK6N2329990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0b9382d39c3fae5b8e27eaf789134c9c628f1c9efd667d6274f579f718a4860. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWT2354137.
Mist Breathing 7th form Obscuring Clouds Theme
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd384bd9d525e529db810fffdb25012ea2339baed4811418229c2ae9eafcf1887. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZNWT2354141.
Demon Slayer: Hashira Training Arc Ost (Fanmade)
Drums of Liberation x Demon Slayer Epic Ost (Fanmade)
Sanemi Shinazugawa Theme (Demon Slayer Hashira Training Arc)
Sanemi Shinazugawa Theme - Demon Slayer Hashira Training Arc
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9af0178d2cc10f881c4660cf6095276613e85c2459e6a89b1fe38ce1aa171b0. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QZES82410064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4ffa6e3cdea1f0ab57d62b4fabe69f857ad8555d69c6e218fa216d14692d2be. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN82464671.
Demon Slayer (Hashira Training Arc, Vol. 1)
Gyomei vs Muzan Theme (Demon Slayer Hashira Training Arc)
Demon Slayer Infinity Castle Arc Trailer Theme (Fanmade)
Kung Fu Panda: Oogway Ascends (Epic Version)
Demon Slayer Infinity Castle Arc, Vol. 1 (Fanmade)
Year Of The Snake Theme (2025 Lunar New Year)
Loki Theme (One Piece Elbaf Arc - Fanmade)
S Rank Hunters Vs Ant King Beru Theme (Solo Leveling Arise)
S Rank Hunters Vs Ant King Beru Theme - Solo Leveling Arise
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7771f6f591ea615e1ac7c64a3e998fecacf59bb235cb0b28401ba6b36fe8292. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6N2561059.
Doma Theme (V2 - Fanmade - Demon Slayer)
Doma Theme - V2 - Fanmade - Demon Slayer
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53d468dad97ec47db2d5995d0bede7f6895c4ad6805714cb60438aec7bbb511a. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/QZK6M2568673.
REVIVƎЯ (Orcestral Version - Solo Leveling)
One Piece: Galaxy Impact Theme (Fanmade)
One Piece: Galaxy Impact Theme - Fanmade
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4b88922d4df62423ac04ecf374e0b5ccbc62e4492ebe586b18db52cb48bda31. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/QZK6F2557534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3dee16c671e8385c9e990eaa25b4b9d3e54f94f7a9c49e845dacb42d4827be3. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/QZTAX2500450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eafaefc47a4d43d62c73ed8dbead5939d72541d52c8ac96a2fdb5a09e7251fb. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QZTB32575387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea6c52e3bf0c2ada8816105aa1552c2ed3e545a48c7d416af29d8d3dabd30312. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTB42563883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa50c83cc344547db7ff6f7b27b0a9cde4d81709483bda3db9237941252f56254. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZWFE2538858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e9c7e43025a9cefd8349538247c9c06092f7fb91dc26e0ad7d86af903892c65. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFE2504676.
One Piece: Rocks D Xebec Theme (Fanmade)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f52349438fefeba2c4be590ea4e4123fcedb05aac84797863b7720f117a16cf. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/QZWFL2595293.
Demon Slayer: Marked Gyomei Theme (Fanmade)
Demom Slayer: Marked Sanemi Theme (Fanmade)
Demon Slayer: Gyomei Entrance Theme (Fanmade)
Gyomei And Sanemi Vs Kokushibo Theme (Fanmade V3)
Zenitsu 7th Form Theme (Demon Slayer Infinity Castle)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20518e12c614ea0912e80ec52217c9c52bfc0638a9b7b7e18ac6db2282cd479e. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZZ7T2561867.
Giyu vs Akaza Ost Collection (Demon Slayer Infinity Castle) [From Demon Slayer Infinity Castle]
Giyu vs Akaza Theme - From Demon Slayer Infinity Castle
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3999b2b5862cfbf7d71bb040e46dbeecfcca579712b3e98885752c782aa276a3. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QT3EY2535771.
Marked Giyu Theme - From Demon Slayer Infinity Castle
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb13aa35c669629b9aa79ff7716c1b7e5955d6c4b74a174f8eaccb5cac589a79. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QT3EY2535772.
Shinobu vs Douma Insect Breathing : Dance of The Centipede (From Demon Slayer Infinity Castle)
Shinobu vs Douma Insect Breathing : Dance of The Centipede - From Demon Slayer Infinity Castle
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d2f3fcf19589fccf1374b247b76d13929a49fbe3ac241a3af5c4a074fb09075. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QT3F42516416.
Akaza Theme From Demon Slayer Mugen Train
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19fea0c1aabea6a49b220b42024d8d7b7ea2bd5b0d4d52b854838514742ee023. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QT3FG2567543.