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 0x6d56fdba79c37869fabd43485c2dcb644dcf907042dc2d981ea9bff006ef0446. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f3e994c1-c4c7-4b75-af31-8b9e89d6530a.json and https://artists.proofprofile.net/proofs/artist/f3e994c1-c4c7-4b75-af31-8b9e89d6530a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Girls Warriors - ガールズ×戦士シリーズ ノンストップDJミックス by DJ和 -
High Free Spirits（BIBLE version） - Mixed
ミュージックレイン・オールスターMIX "バイブル" mixed by DJ和
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 0x4ce792f2be0f3f890f8b9bdb05689247796cc10301fa217adc2fb8e9c1c74f41. 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/JPX402100145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c416832aa288c3a9b593b9ab1ee148def028e0fe29fdc35a2b0e31080541afd. 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/JPX402100129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6c40e9ef971cc699f057d76a90b2f4ebc5f78a837f9490df44711b51cc79eae. 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/JPX402100144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5586db1db6752bbbb21840dccfa01efcee4856aaf942a880e07425723ed73423. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/JPX402100159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e189a595faa236c4023bd95539e06197001f1c15b2baa7fd36de30b5afaa8ff. 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/JPX402100126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc79c2936526bb4f5c0a7ad02060d4e475b3bd0a6c77344216637949096ca2047. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/JPX402100152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa73f8eb8d78895361fc84dce5b82e6c112902d96ec39b89fabfc55594be2951. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/JPX402100142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc72d6f35c146d0bef45761e5b07897a1b466c4364c9d002d83757904637de5f3. 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/JPX402100127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5925f212365ed4d883248fb1272a558723055e76d4100171c4f94f86291f434e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/JPX402100135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc40dbe5fc111176d98ce01b8687c7e0c9f64cdc9fafbb1ea3b401c7370d9eb2. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPX402100155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe45ba0aae3892d63df54bd9ec8b1e1df8a283197ab726a82f1d9eb0151ec4da8. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/JPX402100150.
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 0x8464be2031fccbf489b73f5f11d5201c7b54d48aca26e87c0b3ff2e811133419. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/JPX402100128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06430a4043df2ad12b1f20db77d37082ef7a78a7812df4782187162fa07ab62b. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/JPX402100134.