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 0xf046fd437c62aafb62cb6af4312b32ee593670f974f79b9ce851a9684faceb2e. 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/edc2ecb3-cff3-4624-affa-27eff8fca7bb.json and https://artists.proofprofile.net/proofs/artist/edc2ecb3-cff3-4624-affa-27eff8fca7bb.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 0x504fbea77321878c997fbe2c3c031743a5802f53fce6e01ffab345098fa45298. 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/TCJPI1997940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5060d6f22008f844f3698edd45827addc882cd8203d68e75bbe0a9137c34f17. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/TCJPI1997943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x726bb2bed246fed25d5140025879e47d622be50e996e360a3cd2123bc3be9058. 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/TCJPI1997938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66984d780d512b1893194d1f16808dd82f45ef7b204e124dbe5e909070768552. 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/TCJPI1997939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc80cb13e8cef6dc2f47d3c6d03f33f389be9cd87c3efc426641624707092c019. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T16:15:11Z), 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/TCJPI1997941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec6b9e56c373f33d894cb4a340817604f485370f77103983faf0bb4e6ee10006. 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/TCJPI1997942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32fd3b025728012961808139c647a8b273344c831bf04b2c3d559dda81abe7ca. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/TCJPK2072173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b5f2b54a73a0a2d168f1e5e9cecb7c4f591321d2697ace5c9a93b24a87aa823. 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/TCJPK2072177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f04acd3de790574e8c320b15d46e092aac70b36ab31726f77f28f2743707671. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/TCJPK2072182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32fd3b025728012961808139c647a8b273344c831bf04b2c3d559dda81abe7ca. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/TCJPK2072173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35fcd06d421a41b486d5de433ae2e2c102808fd98cec7e9a648b72604bc55659. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/TCJPK2072179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1a9ed9ca1d453d22fdbee54b5255abdb9b19b0d62092db22f0b7c00fa3401f2. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/TCJPK2072225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x169b8952bd2bdd9fda1e3e3f66ff20f71f23c3ae57d9f6e1a98882ec1f348043. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/TCJPO2111860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x106979bb689c904e3b25352352561feffa34957540e1e4299fb2f1499e94f89c. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/TCJPR2280692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4408d006ad497b5537fe0bf84cb8118d4ffe18a37d8b25642c5d512b08224c6. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/TCJPR2280687.
Untrodden Morn - "Uncharted" Full Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbe9b22a491715fca4bf888054455afbe5864c837ec812f7c2f03bbe0ed30945. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/TCJPR2280690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55f80c3e14fc13f0178647b6e73deaf958e6675ce671bc09b72f2505b9b341e0. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/TCJPR2280691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x106979bb689c904e3b25352352561feffa34957540e1e4299fb2f1499e94f89c. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/TCJPR2280692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb35949d9c9a31a66de571027d90358153ac5658d4896413d65aa64d76b38b623. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/TCJPR2280697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x549c80ba3d05941637846c3137a36fee83b7887e1b2bc3eeb2e3ebe3c3dcb6d2. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/TCJPV2340400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaaaed3d1d13ddffc7b72880b8cf6b281379c9b2a0d2b92f7fa2e234c467970d. 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/TCJPV2340399.
Arcaea Sound Collection: Memories of Myth
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38f89490a3378b5ad0334c2493b392591ce8d854bc7deb7400bd51ddd580ebdb. 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/TCAHI2357347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3eb92f0ffcc21917665cdc37324bcfc9ad77e015bd1ed4d33f7f27eb4a16309. 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/TCAHI2357421.
Arcaea Sound Collection (Memories of Realms)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d819dc620213becec64ed57de2b42aa0f27e095fd7ef8a080d3f32b138f15bd. 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/TCAFM2172887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x982a6bce7edb65cad4701cfa0b83b42e2b4d9ab695c40b500f972c69525dbff8. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/TCJPL2030307.
Arcaea Sound Collection: Memories of Conflict
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff76bfc392e6274dd72d9dfaeba0e725c3e4fc332c5c5e273562a9d21fe2d4f2. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TCAER2055585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5afe27843489c168bf9180ebc1a1e160111728eba9066fe8905ae8f13f8a3704. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TCAER2055598.
CHUNITHM ALL JUSTICE COLLECTION episode III 4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7523796ace6ddda0390d7cc52bf350a0963fc8f889fadc9ebb0b0618b587b5ec. 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/JPX302243100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x349be913e89ccfa87ba79fa17b0fb639e91fe696eb5273985ee3900b247e1aa1. 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/JPX302243130.