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 0x9e3f55596a1b2249f2e0f4c5773fd8ef71344783c4eed81097b5f9083261c436. 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/7cb4afa4-b5f9-4e5e-a948-abf32c3b6bd2.json and https://artists.proofprofile.net/proofs/artist/7cb4afa4-b5f9-4e5e-a948-abf32c3b6bd2.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 0x0817cdbaef2dd206bcc0fc6f6102d642247faa73d867682b3da2d7415749fa90. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/JPI101600007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38e1a44e8ff8d38000b29ea1ddaab76c9590aba90599a97eed179d16b1d2db7c. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/JPI101701966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbbee63c5500f481e5b81e2f7b99ad19c21f95a5585cf61d47bbbdd2757812ed. Chain 2 (Bitcoin): anchored in block 957705 (2026-07-12T12:50:42Z), 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/JPI101602689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc809e39c595714e98fed0290e7d8471acf4eb63f087f271c52e8500517d6eb6f. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/JPI101901808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e2297bddc8c79dc24e9ab5d175461273c3194d2155c47b2467c89b7ab60a5f5. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:08:20Z), 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/JPI102001571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb65ac72216b2e2004eac045d38af8369aca314546edf1bd26809749b88a939c6. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/JPI102002269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bd21b1f00446523f71c2e37bb7104acfd080ce68d28e00a4e48349e45febe58. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/JPI102002271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa35bf3545333be6ce3ecc04b6040f882ed558d9a5ca2164cfd814f85bbc67a00. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:27:31Z), 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/JPI102103539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37a4d0ed5b9c6ff17295eca96e879853d66c8c8d15d4cd3029869c309e3590fc. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/JPI102401768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10cd5edd002c0c0f8b71521a121c5d417159b403f274c990c63792b7c366510f. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/JPI102401027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e4d73c509ec7f56d5f0dbc63bc793d677cc9b929b48f02e434150149cdf2d31. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/JPI102401769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x165df39518f8889ff39a6902138e52c2ca27aa876a95e61b5e70546b8bcfdac4. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/JPI102401770.
AZUSA TADOKORO 10th Anniversary Best Album HARE
AZUSA TADOKORO 10th Anniversary Best Album Qe
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05f86ca15183d17a09ec28e186009905d06dd9229abbe82dfa356f39fcfa15dc. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/JPI102501623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd929858ec5a3199f0265a4fc1e86cfa5f2a6ae25f34f39101c78a77a7a63669. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/JPI102103401.
TVアニメ『終末なにしてますか？忙しいですか？救ってもらっていいですか？』オリジナルサウンドトラック「青い記憶」
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3079a25af860a16fd25ac9bb2056748c720744267b8feb296544807b0e521f0. 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/JPI101700513.
TVアニメ『転生したらスライムだった件 第2期』転生したら音楽だった件２
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c529d28940eaa5fee47252aa823f1ba651f624f0227adc544bc15af29c79fcc. 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/JPI102102478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5323523ae70826a4ed3e4edbe664ffa1cd28fd8efbe606184eddcaaeff5b3aa8. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/JPPO02304177.
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