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 0xacc42853c2e114e9cbbb4f377ecf0c37f847efb6539257149b47d28cbfb92c5d. 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/8154f063-ebcb-4849-80bc-c04fc05f133a.json and https://artists.proofprofile.net/proofs/artist/8154f063-ebcb-4849-80bc-c04fc05f133a.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 0x240a989f4b436488dc325b637ffc2b91fd9fe803e1b48ecc063dd2ba303ea4aa. 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/NL4CP2423258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43abb83aae70735f3a7735b534f9fa309438ee4746813bbf52392dfb44ba9881. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T12:33:53Z), 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/NL4CP2423259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x332f889e733e25c5d8d90bf9bd4256d4cc75fbe1fbd66d687bf81d85919c4b6d. 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/NL4CP2423260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7061093ecc427d1ce7b4058bbb40f1a6ca252bcb6c65c472bcc2876249eb7e64. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/NL4CP2424188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f9c2eec4956e6d19b7bfd25156e90dd8648da1e40d8ebdc8ef5896b3f6b2cde. Chain 2 (Bitcoin): anchored in block 958785 (2026-07-19T21:40:06Z), 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/NL4CP2425475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20fec1e7de082d87ca90394dbc18a844ac6f0449455109e4f8e21d0885f8b59c. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/NL4CP2427044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf61ebc037f3e7d7076fc55ce13f683f2f4a6ab349e9fe6f2bf5d9c8db0159202. 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/NL4CP2427229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3169937f478bf602580170a58e8b88d6e246567c8bc8ee6a32e528473c2faa8c. 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/NL4CP2428268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd8cdcf6ed4522626ab6ee5dbb4d2ba9f259d8edeec3d3ae09b0b3f8db0bef1a. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/NL4CP2429604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x301dd113e29690ddba487389a75d1effb5b9eaa6b00d33e38854fb764781bb85. 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/NL4CP2430604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x762f64fb8b1a2eb807f9036ebe32257650aa086125c5fff67a1c4f3cd7a605d3. 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/NL4CP2427246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x735c51bbcc3d68164fd1d78048ad67819708d0838ac3cc308fdd8535cee217bd. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/NL4CP2430096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa577920bd8c76117c0b56454c2226cd7e9e82be403781a7d742ce3c4e5788f80. 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/NL4CP2432590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4c518b11bff0ed9ef722d60b2f05299b5c5f5ee7799784690d0321894f3df42. 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/QT3F22480134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a93347a93e2c2578c93098dd5d8d6d67d7fb52a3187d79d42e73d49741fc23f. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T01:09:53Z), 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/QZES72565118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67bf7ceef2f029e9c0bc3e6bafd4b077b58a7ca240886bf21624cc8b7bd76c22. 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/QZHN42552379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd071d7684cb901ef5f1f6458c988109166a3123c28a029fa65b6eba2a7108f93. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/QZHN42552382.
Space Marbles (Original Game Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ff3a27cee4f3e9303ee14beae0edca5916e9020210c4d0b413cbaa737990b26. 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/QZHNB2570291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x324bc4653755a65f22527bdf8173713633a4cd262186edc7440f52da7d031ca8. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZK6N2512482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e6c285e2ed30b9159a1c428d705c47bb8d586078cc5f0094d13418e2862d073. 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/QZMEN2584650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8e02ca9a881a3cf9d5964a0476bc38ad3122fb44a060c3a53f2d6be7011525d. 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/QZTAW2545829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cc1f58c9158245b28a1518acfd32e86c7b73c1774fee229284b93eff73bec83. 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/QZTAW2545827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eeda9bb6d8e56fb230d9ff8d91f5bc8ab183bb2c8216e6854df81375eb18e49. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZTAT2592083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94d94b5884d909465facedbe93471b82abc39279b607b818ed9f51901818722a. Chain 2 (Bitcoin): anchored in block 958861 (2026-07-20T10:02:52Z), 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/GX53U2599001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86bbdce59169673b8c3085c54d4438fa1ac7bf2d4c236ebcbef24c6a95bcad98. 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/GX53U2599000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x853cc423d8bbc49940373b0e8cdd2bd61fdc46fcd9e81b0384a58b5ec3d84670. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/GX53U2599002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x760cb3d32673e16c6810cdc93dbb4018ab81a349cb054b2f8c797c81c2bb1005. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/GX53U2599003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d32f86331da667cdf5e8b422bac5343b9139ca3c0936c632e449649137f33f9. 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/GXH2J2570607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fa53c5d809be3d1564d5f303a074839fa0355e44134cd97571df7f1cded9f2c. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/CBEFB2500958.