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 0xaa847944c6cdc917272aba63e03db9db16da1571f085686b1a396b3227579554. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2d599ee3-d7c4-4c24-a1c4-ad109dc32ace.json and https://artists.proofprofile.net/proofs/artist/2d599ee3-d7c4-4c24-a1c4-ad109dc32ace.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 0x1c8ca4b9d017996a199ef21e2fe22ffb4cc975aaf2c03df514e35e57cc7e0cc9. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/JPY392200832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a5042e2ced139cbf306ac288be9fd81d0907830b315e50523bfaf2215b94593. 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/JPY392200833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x097d40c6c1801c2f3c51333e132bcada9967d06875808d77aaa6c83633d393d0. 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/JPY392200837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb417649856dc472b9d10923f33105bf9f5358cac663dfb2e513f6b786367de96. 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/JPY392200838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4790b8ccc09fe59f9e47321022c559e8d61750bb9c5e7c6b48ddd38aaf8e539c. 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/JPY392200842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdae42575ed520a23077688b7bf9ba60f3941d83a2574998f285c3ff1586f7657. 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/JPY392200843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2968191fb197ed3c71b9943fe8b84b2d56f8a5d50d2583763213c199705a2555. 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/JPY392200845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2013b1c3bef26271bbd89c6c7188767b56008d5eb3af7d68fef2c4d8b388c094. 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/JPY392200847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x772290883052eb9f387d73caef4173e576e9168b095f1adf6b594ecd2f0a0a89. 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/JPY392200849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e8834af200aaa924ea2e2422f670acb595cd1f43d08ef619e95c6f0bee87121. 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/JPY392200854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36133411d83d93fd79c4f8dec922064e1d11ce0eaba1670864a4195c2859e788. 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/JPY392200828.
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 0x2a0019c7af8bd40bb52d05616a046de4d43b1b08734d57c59ca9478769bf366c. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/JPY392200829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5992443f23c9cb0d8ef37a2c4518722d9f5addb4205e0ba937b11569f560c29. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/JPY392200831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeea86952bee04b51a0fac45bd3d6fd45546a0e747688506eeccedb549c7dc35. Chain 2 (Bitcoin): anchored in block 960173 (2026-07-30T00:11:40Z), 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/JPY392200835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ad7aa3d3215e89990bb8c308ed4c8317a47044f7256a2b956a2391a413a44ec. 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/JPY392200836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x868985cb44ce08c436a54f9f127f4c32efc512e0bcdcd3bb66e0133b497103db. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/JPY392200841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb43e9d1ac95158fe0409b7c39dd79c5dd8d29a3c43f773e3a1d1d55cb8070818. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/JPY392200846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f29e8742798cbc0c5c1ae54a140e557ade09595e953051bb0fd2b8809560c6a. 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/JPY392200851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13ce02115f82a7b6ca3f9f20fcb822b58d0305edd51c9817770341c96b7c48e4. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/JPY392200852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x165b9af1c4b81eee4cc3df32174edc03d34f44f807084dc4094ca4711fc00a9f. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/JPY392200856.
KAMITSUBAKI x Monark Collaboration Album「Awake」
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76c6dc2fbd431af3cfa0028ab5ea886a0fa56e7207bf867b62d939f70aeab59f. 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/JPY392100028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc04990f646b012263009d1bc3f411b72c8d24e6d544000dcf788abfc376e4048. 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/JPY392200379.
Memories KAMITSUBAKI CITY UNDER CONSTRUCTION THEME SONGS COLLECTION
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d21d19dee4b8f42de4b53dc3792efed05681376dd6d549ed74d19e99842cc33. 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/JPY392100254.