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 0x598641a3411b3b421f4d2c23adb4438e865701d168b3da4c84fcfa1d8009d59b. 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/311cb20f-b5bc-4b28-b40e-243e47b79184.json and https://artists.proofprofile.net/proofs/artist/311cb20f-b5bc-4b28-b40e-243e47b79184.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3571c12dde1f91f7689da6aef146e63038153545ccd553cea4d3527fe5c11569. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPY392301731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c30632bd2262569f616757100ce66b372966fca1548862dbf865eb1a84ef435. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPY392301011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fe73ce3cbc7b926d02c1ef9ed12937f2d4e7c47dbef470bb4a821147eb21144. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/JPY392301189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x254cdb48397fe019ab61f7f2f205f28c5e7007a68dffd17ed07cb287674ce7e7. 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/JPY392301206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fe31b3f51903820e3674dc4787c55cf478b838451c8d4dc79569403d5a5b843. 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/JPY392301622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacd2d6322e51857133ac67fedddce8e32a5bb22fa28bf48d4db5dffbbb13c510. 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/JPY392301205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62cad9295e1619d96b823fdd40d277bee130d9c39872f0381af8a2fb5c1745ce. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T19:49:01Z), 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/JPY392301506.
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 0x1059c70e8d7228d662aeab9ef7f506f4cf450dcb3663f7b108a9dc5375e4439f. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/JPY392300958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b3f2323d84f766d74873f94a68aa4904ed42146bff7c99cec9afd0ed5e9d68d. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/JPY392401859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa9f13cc302e146840b1672a88a78050109a8d559930a05cf8f4326469a7524b. 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/JPY392301204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf39fd3d84f0c863e4570dd74b9e224e9cd7d2332bb6b532fe0f0aa1c3e78379. 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/JPY392402500.
音楽的同位体 星界 1st COMPILATION ALBUM メタファー (vol.1 詩想のメタファー)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x836c4c6609b660124e12cde55ad059cfcc21886cac8cbaf4838f9aee29b8722c. 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/JPY392200419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ac99aeb961a57ac87cf2a8837d15c8f384d6e50db7b718a6b30f96d000d3042. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPY392200418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03c56c0eb145ab32910c705aaf6e1d36466b5d214e23efbbcfc6868fe8988424. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/JPY392200447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6adc1efd41a7c17014aa69b4433e3606a6896a7e49b15c5cbfc828835fb0a232. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPY392200381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76d5996c41443b74072b262c324be8dd6f8b0400f30c63c1c8fd6807d60ac9ff. 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/JPY392200477.
今なら素直になれる、だから…あげたい。
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcfc246b1a41bee3e3fdd4eda592defdaef0507c0e1e45177016ac325a5b9eed. 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/JPY392200531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6712cff638ab70501a529995fac42bf9ffae5c0b3cf7e7a9f6954b4a2757418. 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/JPY392200573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95a1301bf3b1f4bd5457a3b127945818600dd71a5ce0bd7000897ef23ca3b599. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPY392200706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9489feffd9cbfc620f65c619e916fbcbc491ed77cfef01f5530219befde0ecb8. 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/JPY392200708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a3aed6e246f0f4b52347704ba8da010b6909826a7fc24b17b45819b32556086. 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/JPY392200709.
音楽的同位体 星界 1st COMPILATION ALBUM メタファー (vol.3 残像のメタファー)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x475bad256a28affbe2383403caae2afcd2e864cdde67bdf29ee3c2f1b49766b7. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/JPY392200416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa7b9b9ed263129cd91f13206d1743b6cb6af6b3cc7511a1f9003ea017a7b455. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPY392200415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbb155fc9eed7c1d94ffc9211fa3580c6d6cc54ad0bac8291916dc589689b5b3. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/JPY392200420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdea16b8d3c2c525137f78984671f9830a19876b6b554c6c7c90bba1c2d9a9218. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/JPY392200445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32a19d29ae6d1fc6c759ce140d8f6a28a8f7da47762f2d06035726fc865c5303. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/JPY392200411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61c5a466bb693f5942bf09068aaf66adb31486b516943836dba035ed2b27a73b. 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/JPY392301012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6208a596a5a920f19d0356f53ba65853f399f445a05ec17020fea19c1a899125. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWY2345597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca5d80caa198906687125e717f04addb9006bfdb9414c34dff8e4a45b4401641. Chain 2 (Bitcoin): anchored in block 960456 (2026-07-31T19:53:57Z), 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/JP92Q2301238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x509d550071d4115601592bc87a51279fd3ce991cfa9217a06e6b958dddc460e8. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/JPY392200412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2351b0407c067b2675bb6531256c1acd7989643f77016af68d024e0e4b818a27. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/JPY392200534.