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 0x9b6f5ce00cd87c1536466069853ee58452babe09cdc0240d4176064e4c2c84ec. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/afc208f5-014d-4d6f-9d7e-bd5cd1113049.json and https://artists.proofprofile.net/proofs/artist/afc208f5-014d-4d6f-9d7e-bd5cd1113049.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
ライフスタイル・メイクスマイル コンパクトディスク
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 0xecae32eadd2325a9be6ed6d65f9ebb9c5c46033a7b2ed29712406d504e3ef934. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/JPZ921307654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96d50a731467ccbe06657a3198e3b38e4feb803c8e73af19151825199aca6ca7. 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/JPZ921307658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefbeaf77648f8406594c067173883cdd74c13fd628d3bffe86237f38fb63fc19. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/JPZ921909246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e53bbcc2387d4d40a58add8ce4cc918955e8f352afef1cd5ea51e87cba267e7. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T13:22:35Z), 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/JPZ921909247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc161085ee5b53da915ea4c7736af7c7c36ecc840997cd43cd16aebace09e4a1f. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/JPZ921909248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bbb8376aa33aff1ddc9be7150dc472b3213fbad1d065f88d02f82765a011742. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/JPZ921909251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefbeaf77648f8406594c067173883cdd74c13fd628d3bffe86237f38fb63fc19. 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/JPZ921909246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e53bbcc2387d4d40a58add8ce4cc918955e8f352afef1cd5ea51e87cba267e7. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/JPZ921909247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc161085ee5b53da915ea4c7736af7c7c36ecc840997cd43cd16aebace09e4a1f. 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/JPZ921909248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x518497f0decaba91490ced6a35b05e4557bc072dcfe4d2765e0ac25f6e009a4a. 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/JPZ921909249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bbb8376aa33aff1ddc9be7150dc472b3213fbad1d065f88d02f82765a011742. 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/JPZ921909251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a91e1f586e5c3210167e484afa08da9be27a370ef409afdb41eba693d781af3. 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/JPZ921909254.
踵で愛を打ち鳴らせ(feat. Gotch, YeYe, Hiroko Sebu＆TEN)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdc0ebe8774f53683528edd8292f6f35d2e4b77683af98215d796e11964f53c0. 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/JPZ921909255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09a047ce4414bd8123a17ba1ea0521b135f68f8fdb39c5f596298ae53ab5fe58. 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/JPG102300757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09a047ce4414bd8123a17ba1ea0521b135f68f8fdb39c5f596298ae53ab5fe58. 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/JPG102300757.