thumb|Service street ("mews") in the Royal Borough of Kensington and Chelsea in London. Mews are typically found at the back of older rows of townhouses, with a more elegant street in the front.A stre
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 0xb19ddae2aea2daca350b2b223c12de264f8656d1e5611daf0df4c8976d170cae. 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/93dccc44-a974-4567-8018-1002d251e164.json and https://artists.proofprofile.net/proofs/artist/93dccc44-a974-4567-8018-1002d251e164.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 0xfc1a20b40fc5c1d3c1cf2bf25882be2dff3506fee18791f07f33829a10493127. 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/QM42K1824806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7517383e6c5ec02c478eae2441ae4af45580026f02446eb6db3f6eca8f7ea345. 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/QM42K1890397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x048adc18851e439705b40292f6a657debf10d18e5fca6d434dd751b1ac8997c8. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/QM42K1861323.
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 0xa16c13a8217afe84e0716b17005b9e39334364005a694c3fb2a32407641d9e82. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/QM42K1887868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86334f795637eaaf9854a973a181ee7a0856d7b0efe4ab3cedb2175dd0005401. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/QM42K1880942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9245b28fa5d4b2223d88066c3359c9c77f372df288ac5a772da0b2f2a73a1aea. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QM42K1853424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b3e252a7a16f127967921a2932da44f63737825f99bbd8754a62ccb9ad53481. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/QM42K1860640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd09129e0aeab3192efe388acb1df08b5282331c10525959c99c3451404d5e94. 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/QM42K1870916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae997d7bb44b7c574c99fc7c048931368daf4cafbb492bd49c6368b652e9ee3b. 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/QM42K1936803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d7e14bd55d7075d87696e9beb63920fecb5135117d2f46a9628262db755037c. 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/QM42K1917665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42b20ea7b3db8396f0bb0bf9c307a336aa9926dac63f90b34fc8694bcd580ae0. 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/QM42K1967516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12c46066f154675268b0dbd19b8cb52cb8e7fa7128f898f90c0076442aa6045d. 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/QM42K1999350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3dd3ea00f86b0dc90288a1031311a8359df07b0d460dead7f9deea1200c8318. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/QM42K1989392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ae24a30b1cea554311b38a64bbab1302925d388970158551d5d15677a2e62fa. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/QM42K1994378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8daceb6ae18caeeeec993352b90f5b6c4758121ac04fc784f881d4b8023894fd. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/QM42K1972636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c52617605baf8838166eae8658750d5f4b127ecde3d2f7f48b5f53a196faaa2. 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/QM42K1969890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03344a1e83475098ae6376aecc458691a170c10d4bf6ad66a500e999a0b7592c. 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/QZF8N2016523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4eb6e2f909236ceaf6ee565cbe56d6365217af4c1c62f4c158dc4b3cb5dc4c1. 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/QZF8N2016528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd40904790a62b6c715fbab53647c1fc8c4d555fcf604045da22d5da9309bd885. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/QZF8N2016532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa51d1dcb4bf55761e21167f3a49952475c705d010adb23b0733b3279e6cfcf70. 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/QZF8N2016534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa8764cae610144530e0b6cf9788df11ba730ab990a909c032fbc2d17e9c5bbc. 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/QZF8N2016539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf0d78edcdc4eeb1ed0bed09d11eb7c381fe4e03dbad57432028c6673e380faa. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZF8N2016536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x111938d4105649d910d4bb5126c08efec2ec48b7aad61b2ba0af1793c8103d80. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/QZF8N2016542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebca109b098afca307d80ccbd73fa945101241c9292a9fd112284104d0f5161b. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/JPB602151159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bc13b5fb4759b16daca30aba72559c78acbddc6a973521e28b54a412a27e0db. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/QZFP52056874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e29d73f59de7453b73b6c8481f484b0c5267e32bd8721f488eda803efb3f2c0. 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/QZRPB2184210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba48f896da95944d9dd950d5cbf5711fcf9c90ce86ea021a66e95111fe11ad2d. 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/QZJRB1950813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a1dadd1bbf94632f64717d69c9d881519a6de3ddafcf7dfb19f14573e0e2cec. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:39:17Z), 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/QZFP52241766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe25a005502aa83589ce20f6097cefecdf5468fd3f676e5859da3c293ff2c0103. Chain 2 (Bitcoin): anchored in block 959013 (2026-07-21T16:29:27Z), 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/QZJRB2246103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd622bed33e2aafb41e52c4772b1bb67e1c24afb4d5cdf856dd4396eb1ce7ebce. 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/QZS672477039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04d2e4dd9a904001f842fca317357da1bcef6a825efd700ed46658d3fec48055. 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/JPE561911340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a4ed0a812b38c17005e69438a21fee555bc88ea743d871e821cf469b2512809. 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/GBLV61815782.
Arcaea Sound Collection: Memories of Myth
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03dbac450f283e429398f770d394a097bc92e0448914bbe140968727ef8dce6f. 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/TCAHI2357325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa7ba80a18780d6e6e97cb75056d01c0ab7de6dfa5ecc618107d34dd08faefc8. 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/QZS642398331.
Arcaea Sound Collection (Memories of Realms)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc63287c18f86a5369d15f046d44c8c0b74a60f10d62ae861687f420f7452d57e. 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/TCAFM2172881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2784b9e49b7ccb1409b29b117a5415fd68ae69369a15715e4f55db9f765c9fbd. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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/GBKQU1904778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61295d5ffe54c74585c527494f38bd8a8d7e140a58be793a4b3b47c157bbd84a. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/TCJPS2243314.