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 0xe9320f4d6cf85c8b70d62536e472ac53b42839b8612a9907b3257b14593d78c8. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8ef02423-7baa-4b61-8802-2dfde9208c8b.json and https://artists.proofprofile.net/proofs/artist/8ef02423-7baa-4b61-8802-2dfde9208c8b.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 0xa1b0a0883df34265a6c70ff526388ff5b87752ff54bdbdaccc32f939d160ad6d. 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/QM6MZ2483092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa68275931c05302ffa6d0a86ffdbb5ec1045f789fe7a03fbd1e1b2ec6e666d4a. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/QM6MZ2483093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1539599d2f58121b14981be08b343b42ded31cb374a7a34f32327e2b7a36c341. 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/QM6MZ2483094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42de931509bda20361d8b4f935f611341de6f07e545be1b35de72afc8fe1bb38. 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/QM6MZ2483095.
有如當初的海浪 we are all drowning in the shoulder-water
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eeb7e75f986a67c55e90f64451a1fb6957f6042aa301d46bcc8a2c3618a0d40. 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/QM6MZ2483096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebdfd4f1bb6b111167a67773c47a2b36b2fab9482e55bf5532ea2e7211da9a89. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/QM6MZ2483097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x541c3a5f25f6b255bf14bf41b23328ebff94fcc8f01ca232e4bf0625f35f685c. 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/QM6MZ2483098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf24f61b95f25275129b958ee9e72f16dec87ba2251d2f035708219afe5924531. 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/QM7282306449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82aa28ab7d7083aef0dcb15d4e038261a0be6093e1240d285136befabe538794. 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/QM7282306450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98b746c9024e7c0b6071f9cdd86bb3649826131c82806b678608193c29459253. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/QM7282306451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20df242fdce60255c77f845103a51d203dc246b74c0166a1141bb8dd60a14b54. 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/QM7282306456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50e35dac56c342548c652dd8d988bb5a8f0c8e11b699d7da0626f0b3910b673a. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/QM7282306457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa4dd86ee0c2e2ce979cd8e45856c308b8e5d045c7139f4dc8e96ece2ac4bb1c. 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/QM7282306458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7180a68dbbcf05891566d9d2416155806857f2c016fcec4988e87b579a908b8. 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/QMDA62270096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99ec8e534d7d603585e824a996a54a6511d95605e4c8b0d5e011472eeda89713. 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/QMDA62270097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83f96e2dcc421f410192e233faeb2769a5f0df3156c26b7e53db167bd18936b4. 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/QMDA62270098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42eb3e6b825297a8bb60e46e51bd85c64cb0437dd72c50197ff213c86480cf47. 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/QMDA62270099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5151073cdab4ddd3e2add25a72459137875d1bba0de3ce7987e2567885a1358b. 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/QMDA62270100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4804f071aaa42b0abdb70c70e634adc217129a9aa64b1707246f9bc17f20e160. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/QMDA62270101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd1ee19a4d37c146434e8a8ca033b478a19078474ffc4da63b82941b10174d96. 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/QMDA62270102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68dba00f05d2c3390da278838d68490794c3380127879de3b08552626d619bb5. 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/QMBZ92309857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda4823d37b67a652eb5dfbf977f8cda73e2264199b2cd65c85ddad160b5db365. 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/QM4TX2322086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f731aa0a52c371aea8b6e6e4f004c4adf188d2a5c3056b572f590ce5680c045. 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/SE5BU2306801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53e2e7474195518a827a9c20b341f653d2d3b6096163994119b6d406b75e9712. 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/HKC992427802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d90a00a61950fde9225ff2631392bf25f6b172d4ca5f87b26044c6070f838e5. 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/HKC992427803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1822347b8eb604d2d6b19bf21213a94d7708c0dd15b2dc883a21b2a152469276. 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/HKC992427804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85657f80dde0a4d1d78b9360ad2c95bcfb92b1dd4b593e12127d162caec9229b. 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/HKC992427805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34e94cbc14e6d1c92f0bd4bed05b7341caeb92e673cff4168bd59c3f1f53c6d6. 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/HKC992427806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43da59d3bb3179931c5ebdc73b6430e3ed3d233d45e84872df126388cc4eab14. 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/HKC992427807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda3795f1bcbd3c620546b693f4be934fe0fb1453f3c8365d8dfc8cfef16cb61c. 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/HKC992427808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x788720993b23102767090e20fcf5f87e391d650854d5c4cdb62199d714fd5ee4. 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/HKC992427809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x947dbcb6a9897d98c2984d4acaa3b0e12d9cf685ab2e64fb4af9fe32d2d778a3. 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/HKC992427810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbafdd7bad25f6a7f812103e0c3f8fd0e479eb4702beb75d0b9e3420972b268d4. 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/HKC992427811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c693bec86a8d63fd48abfc2a48d11d8f54fab63b0ac6f670790af77bf361e66. 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/HKC992427812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0294eb7a3cbd460cfe48c248d4dad7cf72faed1aab3bb872ebd19b6e73095139. 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/HKC992427813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71ac30253a33e48257e787d4a3513379bc1effdc9c737915343ded7d9f0c093c. 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/HKC992221121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71ac30253a33e48257e787d4a3513379bc1effdc9c737915343ded7d9f0c093c. 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/HKC992221121.
I can’t be you (with KAREN YEE, Sam.K) - Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dec6e29dd065ba201c7d6f8d24847f047f4bc0606d214c6c9a2f1339618d23a. 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/HKC992221122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13694c14dcd66a530c0803cd56bf2ddbc7b557f50ef416e76986a63478e09acb. Chain 2 (Bitcoin): anchored in block 960179 (2026-07-30T00:39:11Z), 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/HKC992221123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd48b79128c7d8f6d6e75ba618f49c475daa448978908e60910cb0c7062d472d3. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/QM4TX2231235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f956c31b2ec8bdaffda2efea47d9b8c7c83b837f99e5ecb5a2295d846368f03. 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/QM6N22226050.