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 0x23e0ab792a794552efbb1973d97dc65c50015de07887b6c995baf804731bc6c5. 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/c016e308-f187-42d6-87d7-1046cae8763b.json and https://artists.proofprofile.net/proofs/artist/c016e308-f187-42d6-87d7-1046cae8763b.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 0x9fe6730b78f2d249b4edad005d77ae69d993050cc58c0ede48f54487c4f9e9c1. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/JPQ461600220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x167dcb0136e5b209ed25680bf2aec12381d73be780f87f6b505edfc343a195ac. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/JPQ461500460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5698363c90072317aa8fedbad020ebf870568771aaf91ce90bbd8315743607f. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/JPQ461600221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9277ebe0e17b10ce47a5fb0fdc3e8dedcc7ce6881556b2645c0e78f24f221972. 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/JPQ461600222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69e301623c6c59f141dbcf775ccc801bdbe6f4a498b34533a5aa6bce091f9c27. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:39:00Z), 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/JPQ461500173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc96e1e41e914d13d6ae885a1e85d82122245a8e53c464c4ce5d089beb0ed4be9. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/JPQ461700163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d90ae7c4965c4ff49a967b91d6fa1e94daf23ea8c8cb68e665f01c3f6c3137f. 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/JPQ461700452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x820790b9c7305e5744d11cb94b2318939c1ced3b4bd965ffdd46d643b2d2e0eb. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/JPQ461700454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x066e1d53fe17ae99bfac4531218e5844590c584e502b033ab831708598b1c98a. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:48:34Z), 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/JPQ461700455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8718175fb023c8a50f0d260e16a2a567425b63e1844a4b80090c22b5bf25ce9d. 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/JPQ461600377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b5331ae3f2760629bd89aff72c6848dc9e1e55e5c8ec2622a3ea9e6e7354c59. 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/JPTE01803660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5adce310ba2a8e68a9c41802a0c55650413b6e7654ae0090793fc01e37aabda4. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:31:36Z), 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/JPTE01808960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf48acb62f96139d2ebad19a4c39108f8459649b9757990305f1ec98d60ffe08. 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/JPTE01809830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c637809ff5c17f3dd59a753a41474189d86cd71f424417294cc98ad0e09612a. 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/JPTE01809840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56f368c71dfaa63383d1fb8dc0e93f4214ddeee2344e84d3c13519c760d66fe7. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/JPTE01809850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2822d0d26ff301a62c43dffbd5fc2b1780b9334ed1bdd36569133004f0225586. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/JPTE01809860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5adce310ba2a8e68a9c41802a0c55650413b6e7654ae0090793fc01e37aabda4. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:05:45Z), 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/JPTE01808960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbda89580664e1b64b82ffb67e99458c7f9483adcbf9a3075237d49810ed2d004. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:48:21Z), 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/JPTE01809870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe317b9c673669309d61864e3b1f6c80db2b8e0a0a3a8f6cf04b417bd1d5ab07. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/JPTE01906130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7726e6bb25fe3ab1b361a2ba69f856dc1593085652222a00b3203162ae80d502. 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/JPTE02000490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30d9cfae392e3bea70ff69657186ae147e79416f07384c6ed8f300ccfd37c9bd. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/JPTE02000500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7dd2dc299baba34d09b201baef8437b6c6b747c1243cb982749a12f55234836. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/JPTE02000510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa25235bd6d9e42813744036662f14fcb00458536de583be3d561f682f7cbf1d4. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:07:12Z), 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/JPTE02000520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4988087104181677ebad3626ee3ecbd6323726cae5cf1aedccad3e9bb3a0d8ef. 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/JPTE02000540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69e46ae46c9ecd078bf6ba04cc942aa13ef167b8edb61ddf30693a34e604eae4. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:15:07Z), 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/JPTE02000560.
Nadamesukashi Negotiation (instrumental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fa33208b947478f0e18f55ae3fa9def3e2e1b225b73006a868006f4131bfc6e. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:10:07Z), 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/TCJPM2043693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fa33208b947478f0e18f55ae3fa9def3e2e1b225b73006a868006f4131bfc6e. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/TCJPM2043693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf8f5c92d3d5cea043817fa8a2a867184a7775954eeca4d1187ffa5d697da76f. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:36:19Z), 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/JPR502303306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x506ede341715a342e2b49142685f1270fe32f20ded1701baa459cb9900cccb16. 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/TCJPH1877598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0c6986ff674fe874c3365f5565c6f2eeb0ea5dd488df14be44fff846551e969. 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/JPW562102739.
CHUNITHM ALL JUSTICE COLLECTION episode III 4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74f4c6baa092d419115814580ae34ede42daa7fbad2c4be9eae7146956ba3563. 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/JPX302243000.
Re/verse -Amateras Records Remixes Vol.6-
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bb8a3a1b31754c308194f8dd9f0a0322c47dc96908872a8eb1e8e88a6a92e0e. 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/JPW562003270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c51eb5fd6166cbfe5b73f220ab10394d551f34b074e4c7e1773924eda4f6838. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPW561902183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9dfcc31ffd63429476dd521c2ad7af511b109b03c46f65c711c713c10a650f0. 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/JPW561902230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1ddf7ae2764825c78caedc4ff8542b98237fa98a2fece47e3f9ad1909cad737. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/JPW561902197.
Star Rail HoYoFair Music Selection #3 "Monkey 42"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11d0756340c9c80ffb970be4cbbe770709ed6f96d523f2f4b0ed58ab041953ad. 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/QZTAT2557709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x435c7b9943c823a09df3a5c1cf6d4d806a80f0a7f17d4123a8aecaab0551bc07. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/TCJPN2193404.
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