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 0xa720a230a233fe2ef42eb73be8db6905694c25c42b30c27f0c5435739feca813. 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/42d7f152-1129-43f9-975c-f64637499cd8.json and https://artists.proofprofile.net/proofs/artist/42d7f152-1129-43f9-975c-f64637499cd8.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 0x737674c211a4d5e37b7a0d6f6c0b6502eeaf355967e5701b68c7e03649eae90b. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/JPR521300133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93607aac8221c0115bc190ce61a102c6e50d81e92cd5c91b7c78308004b133a1. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/JPR521300136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32c74cf85ab9f2f3838fb4cb928b9cded0304f1aa03414ceb37bf6388e5e9902. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/JPR521300137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8efebebe4fdfd334fc94e8ff8649481de177630d986b18e19dc3579a2b48e08a. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/JPR521300138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x121fb93165662419fd6e3976a922679803fa332310d5c6afbca17bb240d9cb8f. 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/JPR521300139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb965a538a0d2558465e5c45861d872d9e7e54f270f667fa075286edec090adc6. 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/JPR521300140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18cdcf88a409a96ec943acf1adb75a9a085936f9dd3c58a15c71004da245740c. 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/JPR521400188.
What On Your Mind - from SKY IS THE LIMIT
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0dd433448fe2a402c50b02cbcbd7ae905d3151b620447e98ac32aeb98236341. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USDO11200140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6371997ce81570ce0a0e1ab5591f75c51d5e857edcacca279cec473242f966a6. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/JPH371500375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9f828cff0ecf9d767f08b3c32afd4296724c09c7d502ceb39d45fd46b65210e. 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/JPH371500377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x991ad5c1a2d212af501f1ff8a43ca73fdf036da825c7daf41aeba45b3d4568d9. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/JPH371500378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64171f916925d7554f6352986e8a223cc0a4984ec79dcf7525e30f270c84021b. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/JPH371500383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x301073acedd03919e83da6ffd304b6d7c44d33d8e51e5deddae1e6879c8e7ed8. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/JPH371500385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04daae67c1565c8ebd725b01592de871067c9390080c17283ca9d9f3bfbe58ab. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/JPZ922100172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f0eda0a4a04126211034f29bdb6d25bb6179f0ec8fa0b9cb8f33f32b1f7f4b4. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:30:10Z), 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/JPZ922208403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x037ddd459d6afd0bc90e12edd21a375473107fc3989f74a136067397c790dd03. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:33:46Z), 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/JPZ922213132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2cfa9480ddff1556cd0c3f2f23c1a05229fa371f7ac2759eccd7fd96936f158. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/JPZ922301917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f734d240bbc9f8cfe073bfd50cca9ff0b0b052a500d2ff6f4fef359bdd107a2. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/JPZ922301919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7125c3dc0dcab7b17d81bc957d78fa10bc113de6bae23a0960571e6c79f986f6. 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/JPZ922301920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a533ca684800d39540250ce8b52a84f0d515e1fed48fecba18d2293b403d105. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/JPZ922301921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc026ae2d8f03554e603bbe36acd3fc334248781bbaa40bbdf3710b1231443e86. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:23:45Z), 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/JPZ922400554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa26cffca2dbfbee915e2213318fcd2c6ecc784339d0c50e678de1b623a101ccc. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/JPZ922403757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf98c37731eaab7c4dd9586e0f2c775031c93c6dc02713114d67e03f78e929b76. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/JPZ922403761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x604e6a2ab68f71c89631f034c7037e8723f3ff4a7d814de7df1729a941ee6a68. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/JPZ922403763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfec95cb55b23e5a20ff3fb7f34d1eaea23ef5ecfe6b146716126fee3dfdd5a0a. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/JPZ922403764.
Hikari No Kioku (ynkmr. (BLU-SWING) Sea of Love Remix)
Hikari No Kioku - ynkmr. (BLU-SWING) Sea of Love Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e3788a555eefdb696a2e0aaa17c2818329acd312c5a544c767fef137af7ca1d. 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/TCJPD2562164.
光の記憶 (ynkmr. (BLU-SWING) Sea of Love Remix)
光の記憶 - ynkmr. (BLU-SWING) Sea of Love Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e3788a555eefdb696a2e0aaa17c2818329acd312c5a544c767fef137af7ca1d. 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/TCJPD2562164.
Yellow Smoke (feat. BLU-SWING & Shinya Yamada)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50c3dd7ed2296a9158ee86d7baf550b364c7acb85c82aca6900df7197b3323f8. 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/TCJPO2150052.