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 0x8d5949a1449212acb1dce392982ed068ab182fff87db031c1ec3698d0ffe9bfd. 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/780c97d7-f260-4d43-aa74-efb65c2160ae.json and https://artists.proofprofile.net/proofs/artist/780c97d7-f260-4d43-aa74-efb65c2160ae.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 0x73869f0eb27090374fd355ce6996b22c76da9259d1e79049d94b7927d6776ddd. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/TCJPO2136218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73869f0eb27090374fd355ce6996b22c76da9259d1e79049d94b7927d6776ddd. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/TCJPO2136218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad36ebe6006a9e34315995ce8e19c82ce301859596cd55a2bd6ad4fc096db5a8. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/TCJPX2397768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x630934a3b8aa26c1a93750b7f96b34bf014d6f040c1e08296785cc28206a1038. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/TCJPX2397769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe30f66967e4676ef51296f80d3321a007efbfe2c1fbd655de84e33dcc31615a4. 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/TCJPX2397770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe39de5c0d59f3e65e1fc7a7dc05f1c206e1d4715f9c38b9473892eb224765686. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/TCJPX2397771.
Dreamin' Attraction!! - s-don "160Happy" Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x241a5474dc74ac007ff5533118aff3657bc67ac1265a137e56af90fc6a1648ec. 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/TCJPX2397772.
Trrricksters!! - tpz over-Over-OVERHEAT REMIX
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63841dd03b45b80e9972182b8ebfae0fede49a70ff9a16be5af327f1ba6cd600. Chain 2 (Bitcoin): anchored in block 960241 (2026-07-30T09:58:01Z), 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/TCJPX2397780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x210142578616004cdb776680bf2aec45fde3bd10d35fa6ee1680a8113a92af05. 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/TCJPX2397785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad36ebe6006a9e34315995ce8e19c82ce301859596cd55a2bd6ad4fc096db5a8. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/TCJPX2397768.
Arcaea Sound Collection: Memories of Wrath
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86ee9366efec7bc1b627a6153af78bbb5cebe75c49a47f8aebc67b85654bd3ca. 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/TCAGF2286620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3870cc13df6feaa7b26bf3795285b6a74ae13cd3d373c268e0a79bf0a900ce57. 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/TCAGF2286598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa4ad3ea03fc2d6cdf819135a9a5e5ac1a77e8ba5f9a83f22170a648c2ebe483. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/TCJPO2190612.
ULTRA SYNERGY MATRIX ULTIMATE COLLECTION
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb75da596315056822f52fa8b80179b5ee4e1be8a494b0cb6367d283f8363a7fb. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/TCJPA2406458.
AAAA Ayatsugu_Otowa Umeboshi Chazuke Kagetora. cosMo@BSP xac s-don hapi polysha Tedjimo yomigY vs. Morimori Atsushi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09f4cd4d51b8b65458ac4834785357e3f0517770f26255588bd0bd842a3f6c03. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPO2128480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x501278fa50819461e20dd0a3b62894807317b5e7d26e0ec590fa604aa275aea3. Chain 2 (Bitcoin): anchored in block 960170 (2026-07-29T23:52:38Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPZ2413655.