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 0x1d77c31b9cb5dc87079bed1079dc3fabfb547d8f100cbc5b05ea7daedd06eaa2. 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/7608dd85-f03f-4f47-9bff-1b6afec6e48e.json and https://artists.proofprofile.net/proofs/artist/7608dd85-f03f-4f47-9bff-1b6afec6e48e.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 0x6faf3594a76c57f8fffe0228a1ac1c14d8f219ca385cf67b2e822255de64f17b. 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/QM42K1934494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83e733abf342a8841d0159ac75ab065612db7e56ff00fe91277a73787bcb0459. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:28:53Z), 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/QM42K1917655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfd1c4182423d16f60b887a287650e3b4815ae46c5bee889279d95991b35b5e1. 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/QM42K1965849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedccd3d6f648eb527cd1b7a6eaa3e39535355bbee8b671a33db5f97daee7bb73. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/QZMHM2047806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaae485fd160d1316a2e4552ea668ce57cfec09b95ab25740f9f9b697f339f15. 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/QZMHL2090292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97c89f76502644c841e1946de5da50c5d215fa250d64f76a44b4c98c7e347459. 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/TCJPZ2415861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x812338bec5057141d752355ec744e7c0838b33f0fcfc0b685aab3acb8cfa494a. 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/TCJPZ2415870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e239f19712524559fa0e48165e81f0eb5d2939601157ce697d0047fe0be58f9. 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/TCJPZ2415875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7456c8101e6e1801b2ce9982b89fa132f5b1b66f0ddd2dd317811ed6a96f2653. 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/TCJPZ2415879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69bc2b53d3448d4080132341d4a3fb5bcd2ac3143abb0203fe075660a4b904a7. 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/TCJPZ2415901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56a4c95627621e985647a58a7af62788528039ea6a189bd1073b9913d1208bd0. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/JP92N2458094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdac827888ddc6420be1390c20ee0fe43eb0802e5bd6aca22ce7e2f9c65ff323f. 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/TCJPG2589154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3de6f880caa9fc8f691b21a10adab3b0d4f7ba1418de0fe5a9ca3e5bab03fdab. 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/QT66K2533614.
Arcaea Sound Collection: Memories of Dreams
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0324bbc311c124d2a81f62f72104eca4638c7682925bc98b4f797d6b58a1376e. 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/TCAGF2265887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc974caffdc47b7c89e0516828a8ed5e9d3ac7c63877863536e496d19d00ed8e9. 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/TCJPK2026412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87212067296b368473c3bb5421c5b82e2b89394a51ca6a26e18161f7fc838044. 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/TCJPK2061018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cfc8496efcfd8130074b9b1f5fd843b9478d8d0fb9f587f42f524eaabfb8be3. 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/QM42K1810460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6592887c798269c6f2096db1d4557f2df1615b648f5d92080c23d00e9307c732. 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/TCJPJ1990188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3abf28cf43a39d5e3a0e4133a78b2c00bb3dc4649764e5f7cd9746bee9f0beb8. 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/TCJPL2018622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2e3e5a4661cff2600d33a467f5fe897c7562181bb7a8134649bf46b3f0813b2. 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/CA5KR2409880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x325c90963932cb749947224e658f99e34c0e162b66e1520379505f563e0e8582. Chain 2 (Bitcoin): anchored in block 958042 (2026-07-14T18:24:07Z), 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/TCJPI1999312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83d2cd0a692a75b66b61702fb94fd81342ea6ad486e9ecd00eb754c21e798862. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/QM42K2383099.
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 0xfca428489430535a5693e6ae74de2e54f79c685d7ec1526722f6206bd5e2b586. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/TCJPJ1989977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53ab2eb010dc763982785ee89351e8f5827a7c33aa81ef488dbf309eaf940567. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/TCJPK1918139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01d5200e25651d7dc9c88da6a2ed8caaed77a066eea91a7d11cf129b1461da80. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/TCJPK2098811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf88579d143be030a8d10482c0f8fcaf57e8c949c261b6c5ee332134867ca29f. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), 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/JPB602145621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x741285479594b9eb19d8ace3254359bee30cc2c6aaf92681bb9a25b75c418132. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/TCJPV2390132.