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 0x2c119b3b3885035fcd9fc4ef700b05023391d4d9513f7e43c9f55d21faf7a9e0. 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/7c826e68-2a90-4446-b902-a9007fb6486f.json and https://artists.proofprofile.net/proofs/artist/7c826e68-2a90-4446-b902-a9007fb6486f.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 0x330f73075e249233884939370641d7ba20d4f09f7f87d5c52cf7c5c47c71a340. 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/JPR502205432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc875dff323bb045c557c3d57a2ca473b4b0bd1cf1dcb111c483b85d7c40a0e0. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T09:43:27Z), 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/JPR502306138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf79ba66cc582ff7c8b66ddce571c1039d2c5a05d861467e69b791dfb8f74e976. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/JPR502403940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf79ba66cc582ff7c8b66ddce571c1039d2c5a05d861467e69b791dfb8f74e976. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/JPR502403940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa58aeab0e1e96ca64db17558e521b2883f1a69773ed7fc6debae157e777dba9. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/JPPC02413013.
Beautiful World - from CrosSing - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb794ae16fb0b78ad40c6bd5a0ebdbfa07417f6db14d0173bf7c3152b23e7a55d. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:46:12Z), 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/JPPC02413014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b4f11b7675534a40a179509f654b71947bbbd87e1ba38db394d29d165c2f0f8. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/JPPC02512244.
I wish there's no you to be around (feat. Harucha)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6af264f85040b35bf8545fb8291c0141a5166c588ede644978b3d5481511878a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCJPG1745294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x786f40f193da51c78938455a6dfe9396e975fe351c0c305637aec017f1f486af. 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/TCJPG1745288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf57f0b74f0cd049155ab4c1a6f1068436c149af2284f2bb453bfdce76aa60431. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/JPWP02200255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf57f0b74f0cd049155ab4c1a6f1068436c149af2284f2bb453bfdce76aa60431. 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/JPWP02200255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48835cb72df969f6eb04e4edfc40f3c652c69e32cff3a5430383b3c3be4396c0. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/JPVP02402403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8529c9b7d6becdc25221250909f3f6a4136c88b10b098d89cade6bd63cf9478d. 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/JPVP02402406.
魔女の宅急便 / やさしさに包まれたなら
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf50afad02eaac976564da5dd7ff4cca0083450d4be61f4a620131aeef9450ce. 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/JPJ902404740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x180ed92266fc8ed63e454879bddaf749a08c6d4f3b625fb4e0e28225b35ea8e4. 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/JPJ902404750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23f8ca314807c8c48d0d48ad2b7c6ed9ad4e60bab60d42453ef58af5423c7447. 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/JPJ902404760.