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 0xc150d49db28a4d8828adb61c8f31de24c55db9624b0baf20a49e8374883aa25e. 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/b87a16f0-5073-4d0b-8fd5-fcfc0316bb20.json and https://artists.proofprofile.net/proofs/artist/b87a16f0-5073-4d0b-8fd5-fcfc0316bb20.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 0x6a58bef11780208355612c0d0176bba8c7e3239cee852fb16700278a76289981. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T01:40:52Z), 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/TCAEM1979118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8be2bca6a9b511f4161eacddecacdc306688696b24a078095ecc51792328a743. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/TCAEM1979125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc9ae9eb2cab0c83046c4d79f2e61594edb5bde7b47ada4415b7dbca50ecf0f0. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:34:27Z), 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/TCAEM1979129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23ac9e910f063005a35b5c49acdd62b6906327368e1fceac67d2cd6be979488a. Chain 2 (Bitcoin): anchored in block 957644 (2026-07-12T03:18:52Z), 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/TCAEM1979137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x097a6fc126e6a9779c0b40692d5823399845904d54b30116ca9d6a58c8db5392. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:34:11Z), 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/TCAEM1979186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefa716f77b587df5e41e7605837917af83a0b2bc2953c4b7ee8f87dce3adf00d. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/TCAEM1979187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90da9f4de5f18b72bd22c5d9c4c8eb10e39e73988994aa8fbfc767f7beeba15e. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:33:52Z), 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/TCAEM1979192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85206845f39822161638090010092626942e289ead6c5d25d6113b9c44dc573b. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TCAEM1979193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00d3c3675a6e516a9de3147663ff158dca5e6bf0a907f6feaa6f9e84aeccbc65. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/TCAEM1979194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b45dfdd41d92f95aaee4423afbad907d8e0c947ec93c37c8abb133b5783c0b3. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:04:23Z), 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/TCAEM1979201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9378aec67f254f88b82538a2436cbc7d2d63cb293567fe7cacdec8cf51870955. 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/TCAEM1979202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3829c728234e97318e8db70df14ea24093c14260b83f2d9a633b23cef20a11e. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/TCAEM1979205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x206c3e5cbd855bafbbc54a3978644a298c56be77ad18d17982e2c5dc90947f58. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-22T01:29:41Z), 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/QM42K2496932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fad981dd70a6c3f60b286e22d475c652fa35dd8c9a37f06fa88c983176790a9. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:37:31Z), 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/QZS642465268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef55c6121edef69073483306abc02d533c4998568ed27d3c38a31358b6171120. 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/QZMHM2464991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a60b05fb15b35af35599d52e1837862082778d7895b69160b52089ef7c35b5a. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZS652442670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97a37d9cfcb975e946acbbcc82e6fd313edbf85b3889759601b2589f852e0594. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QZS642449484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf814485a84fa8a809216ca59d9e283c60dbfb1124d95b6a16c5926300d4c00b6. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZMHP2445035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7201c20b278f9c5d610c5f617e0689ea246bcd98725fdcb819d9bfc459803c7. 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/QZS652471603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce3eb6b489d00f3c32fefc8cdb7a12202779e01d62c640c8575cbfa8ff9dcbc5. 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/TCJPW2316775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9adffa2746820029c233b87ca61188803071eefc9a7e407432ade7d5845d1df. 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/TCJPO2190609.
Arcaea Sound Collection: Memories of Light
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x408804e8567b303e8a0d7380f495d19dd81a6374f6b26056064eb4fd1bb6ccfe. 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/TCAER2055533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6304330cdda3c50693aa9530d7318d90b1710b272c52fd3e85848f38a74cd25f. 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/TCJPK2061158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce63055a61640751df29c5b0c5728ce2dc21b06b9c43eb5395ef1b41aca33cbf. 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/TCJPR2201081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46fde530f0eda811a69b8534a429bfe7d36bf1777ac95a259ddcedd22fa940a6. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/TCJPV2317235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e812839ffe77c824290838c30567959df4cfdda8b2075b8b4849412de37c930. 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/TCJPQ2108355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd67342c86de71bc3a236c877d162b31d69223cd3f7bd5103349176cbd935472e. 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/TCJPQ2112046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c60d887478c41b6d1ad2ac1a33655da117f59a76d46abc191c840ce1e26eb32. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/TCJPY2499561.
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 0xa6a979cf1299f2df4ae3e1c53c3fcebcdc50ba6330af9da7756660a55fa20bfc. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/TCJPS2201195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92dc7354aa68ee549f5dbc2f324ca36fb9a66b62b1d517a9f4a80b32128591b2. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/TCJPK2088107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6a0522f934b6ded67998ff551807e2fbef6aa28786058967f2666db3b461c5d. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/TCJPQ2126464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59ba818358d6ba1c7220632f23eeb75c64f292425ad0d89d5b229429e8b6f010. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/TCJPO2190687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ca3d5fbd7d7607d97bc9497a0678db0022e1f499e346a7e00da953340fc43bd. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/QM42K2338616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x466e940fd6760ede987f4e823c0ea595573db2bfcd115bbdbfebc43495b44efa. 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/TCJPL2030306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacf576bfb7c97096d7cce307a131bd38f05dd6f3135d27473e6969fcf3d92326. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/TCJPT2288737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b91e3e285b3e15126d7a5104fc763f81b53dc79db90c79ed53fa235d44de5ff. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/TCJPX2343101.