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 0x63c553e588b5dc632ed1ed7d63529f9408f2ee9df5f688b892e333cde138e045. 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/7d02233e-36f0-4231-bfd9-ccdcc87482c6.json and https://artists.proofprofile.net/proofs/artist/7d02233e-36f0-4231-bfd9-ccdcc87482c6.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 0x61252c68c86bf7bc293f2e85e80f4f134f1e4ee4208e7c5844e0cd00d1befe64. 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/JPD362300002.
PAN 25th Anniversary Thanksgiving! 90 minutes non-stop one-game match (Live at Namba Hatch, Osaka, 2015)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1df1df2f3499d4b9bb4c03459521a379fa5d1e160a7c5ca673ed0b62d77479f. 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/JPD361900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x728109d2a99dff28b2bcbfd98bf0e47ba6ecf0bfa75f2d05af8265153379ebb1. 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/JPD361600032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ba4f9817bd2b424b47f510d848040bf78f7368d5635166355e3486789730ded. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/JPD361900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x668b64ebcf1e7e3a69e028489e893044c8ae46aa76f941783afe7ac7fc506984. 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/JPD361600031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x131010530f66cccf426b5dba124d01f5eda36293eb8e42f032b97448b5d817ae. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/JPD361500026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x369b18a84795dd99756e1bbd8d7b30294e138c4429688d85d4a02f68b800816b. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/JPD361500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0c8c57566c1f35bdd6f070a7d1ec6a6246de565ecb48724f3694a15b7ac34eb. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/JPD361500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2665f4914c73f2d0cdfb974390d57f7f80abf540320ae4d7a194ed365a44fd9e. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/JPD361500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x801f093808da17ded7bbb114d6c25a0074a1076e51ed2a83785e310b7b046f87. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/JPD361500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17f3d64e58428a3418ca2cedab6c776a50fb57c931af0ca0879554c3161c5eed. 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/JPD361400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39834171298cec82b76871da8a3aa29139ed573cdee59244b89114aa06639879. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/JPD361300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7b786a80c3fd0aa06a1bfb46cbf354f134be9080c989288fa98c6ad8adf815e. 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/JPD361100049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb434a043d8a91f053562d803066721e42a03ca7f5677bb8d475424b21c193512. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/JPD361100054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd5a5a2a385c06e3d29848df886a351a44def8527572231aad8d1fb7f16b467c. 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/JPD361100056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb83fd105c335fc8a343c3a4945dbf466723a2cd79489e8a860aa38c0bf8e6453. 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/JPD361100060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x545d503ae5cff4701244a02d1f3d2fc07e99103d57c0a210df830b53d079cb8c. 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/JPD361100041.
As for the stone and the mirror as for the right foot
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98d08bbb2818f72133be285d1e25e11841d1ac5c179557727f9e7633414e631a. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPD362000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x728109d2a99dff28b2bcbfd98bf0e47ba6ecf0bfa75f2d05af8265153379ebb1. 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/JPD361600032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa42e12bdf2224b0b6f6ed801eda676a416495608125a2e87b32c88976945b8e. 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/JPD361600034.
"Let it die -Subete wa isutori game-" (Let it die -All is musical chairs-)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefb77a25f251e654cdf1b42670d9392ba28800fb3f941cc9ba0d0092a7a278b5. 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/JPD361600035.
It is splendid just to imagine it(Short version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e8fd12d5d151fe7c049b3106afc2654c3185a0c77483b2cfc9af4205d6a6860. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/JPD361000021.