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 0x91b65877abbb86efbdf777f90a8266f1c6103878bdc43b3ed1747e78bb139ca2. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a7ea59b0-2b09-45d3-b247-378b77eff59d.json and https://artists.proofprofile.net/proofs/artist/a7ea59b0-2b09-45d3-b247-378b77eff59d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Guilty Gear Xrd -Sign- Original Sound Track
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 0xf7d104b7fe62854046a2ca3ab8a69794faab0429672eebb77255b26c0a028737. 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/TCJPE1602064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x017993ac780927561d80117ad20aa2c289f37e223036f03edaa37aeae8954feb. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/TCJPE1602065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03b3ba8761498bd21a9f2b62b5e19c3aeddc128e7e02cd57c92cdfb991ffb3ce. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/TCJPE1602066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30044c8feadcd7102685983f50d38f30bc7bf1f6a1b76aa8e55777205af364e3. 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/TCJPE1602070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee39353481a0c31075259c67d5d20c7afb48eab6136ba770f0e29f8462ba3d26. 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/TCJPE1602072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b23758b63ad399367748887f34951ba4634ce711ee68dad7bcee626a902b8a2. 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/TCJPE1602077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a7137ae1b45754feeae0d9a69b2c92fb273515fddc30703649f1f8230ef2861. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/TCJPE1602079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ee9ab47c80dbee4f8ae037da159ddf031fefa83dfceccc4575169284b7013e6. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/TCJPE1602080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x247f59a9a5d1b7546f22da89b0ae5fd90a34bf346c6beffdab261790bae112ca. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TCJPE1602082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1a7dad1ef661d45d2b0d59a34b1682080044ecd9c7d5180525573d56d5e157a. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/TCJPE1602062.
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 0x10eef1f7277fa5cee26c695beca5b290ac746e24fc6fbedfbd6e2cf5cc751bef. 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/TCJPE1602063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3282c2bc031bf4a7d0077e109c9eef2962856a7d8e68a6bb9bbbbd24081383b4. 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/TCJPE1602068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb74bc94270f9cbc66fec583c53f704697af5c8010772deca64a72851bb41b9b0. Chain 2 (Bitcoin): anchored in block 960153 (2026-07-29T21:57:12Z), 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/TCJPE1602069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5131be0a0e92e9fed55b4615c50b026a83a2b1de737e973ba2781669615d23e9. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/TCJPE1602071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f88d2cb4484c37f39e41f0d83a4f98a1bbcaae2a04bc35a340f911c81794a4f. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPE1602073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64277a584d720689ad1afadd691e44ece42d63db72f50907da2049109dc79638. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/TCJPE1602075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b0090bf0398fad8d056f1d208b246e6ec48047ce9479462ceb7b244adadd2bd. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/TCJPE1602078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddbf998d095e0acd4807823149eff21dd11b1779810c1b29b99a89865e7f33b7. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/TCJPE1602081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d59776214aefc2b61bd3dd4891fa0c9c858ddf0dc5de7b6089cf67d43fbb62d. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/TCJPE1602083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x625f2e4b7a7743ba4294364efd8ab94ca61bb64e688fd36296edc40663d6d031. Chain 2 (Bitcoin): anchored in block 960183 (2026-07-30T01:10:20Z), 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/TCJPE1602084.