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 0x08a2d9897b8770837e3adf30688592588e436085d9a8d3bebdddd3315b102e78. 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/d5560ac2-955d-42d3-9990-d82df898228d.json and https://artists.proofprofile.net/proofs/artist/d5560ac2-955d-42d3-9990-d82df898228d.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 0xcfb1852fc7a3642cb1418d1f6d83e3094c65e236769f8523cfb7a470590ef6ba. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZ22B1808564.
The Second Star to the Right (Music Box)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09e3f004f70bb751434d36d22253b262d5bb19b13315be7af2e701b67c9542df. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USE831516496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25d87a574f47ec34fd46eb9886bc8bb4e2d78fe3e3fd1563b3758fee1ef4cab4. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USE831520048.
Seasons Die One After Another (Acoustic)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8752ab4b7bd5f0184f745b3ae51ffff07762b29798b934c72cdae91371676f0. 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/USE831534407.
Sore wa Chiisana Hikari no You Na (Music Box)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e2109edc99074a44f75bce779534d3c58d8aaf9807e56cee34a3fcd5c96ffa3. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/USE831588795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca90bccbdc5c2cbd8af1d5d7c80f0a5c4b42c5eabbf3aaf27b9a6794e9d8b761. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/USE831592779.
Simple and Clean (From “Kingdom Hearts”)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59c4d9ecc4eeb8c1a8ab6208cbde1f0a9e39ab89beaf413e9e4f2c84c5cf850e. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T03:48:33Z), 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/UST8K1700296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3def6de89a4487957420deb41e525331a8f2f6e93d17c8dba7e01789d7a8ff8c. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:27:43Z), 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/QZ9Y21739770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b6d1ff17fdcae7f86855054b2b8b94809728d233a608b372eac4e05fac7a7f9. 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/QZ22B1904578.
Rain (From "Mary and the Witch's Flower")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f935b84137664c3cbea7dd1f4176e588ca7f05c7a3675b684d8dc33ee081926. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/QZ22B1930773.
Kiss of Death (From "Darling in the Franxx")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8bd18d8b9025c7015fd53529c46b6dec491e54d52fa85a46aff7dc29eaced01. Chain 2 (Bitcoin): anchored in block 958647 (2026-07-19T02:36:14Z), 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/QZ22B1931672.
Hacking to the Gate (From "Steins;Gate")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75e0969875e64b58b184d8f8144615fa69e5a467051d5640f864c14a616aa20b. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZ22B1951439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cb3366d4f07b8e4d80b36c174a6c375c2d65f26b96faebd18cc75b644926733. 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/QZ22B1954997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fded576e9cc817f1bb303e15897444e9cef0a2719bca6d22a63a97a55d92a2d. 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/QZHN31929087.
Regardless (From "Cannon Busters") [feat. Master Andross]
Other Friends (From "Steven Universe the Movie")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80c122836a09ac0b057dec4ec0e450983ccd3291ef3c3a82c28ca0326930d834. 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/QZHN51928692.
Bubblegum K.K. (From "Animal Crossing") [Music Box Version]
Bubblegum K.K. (From "Animal Crossing") - Music Box Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42e88e1ad35f07d72eecc46614e16332c50fcb0790db7423be19e6aa1b10df80. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZES52093996.
Last Stardust (From "Fate/Stay Night: Unlimited Blade Works")
Break (From "Yashahime: Princess Half-Demon")
Sally's Song (From "The Nightmare Before Christmas")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cd4713da3616d96b2aecf9ef52ecb3e4ba0d0fd87c29fea7df408cb93b16225. 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/GBRKQ2155039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02ad7427fa3608bdcc2df201069e21df06ae38de56a752a6d5203c4234df7e5e. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GBWUL2429963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x852cfce4653f2a6c7dd01d450fb9fb4e70279a2549a8f2ff4ce781d77f01de4a. 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/QZFZ52087018.