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 0xa4e03b3a63af5407b8b90c0d910d9c2d8da96fd22435a85c91acfb6d52800aa9. Chain 2 (Bitcoin): anchored in block 953654 (2026-06-14T16:26:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/48b79b3c-1d55-41fc-b56f-98e719080601.json and https://artists.proofprofile.net/proofs/artist/48b79b3c-1d55-41fc-b56f-98e719080601.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 0xeefb8708cb22283aebccc2b4422eb41fe4d65dbc7c2c231c41a9cd9f168f742c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:45:01Z), 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/USHM81196938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73bcf5ee1f657aae0f48d50aaac72c92c5ba791d8396c38c16f52dbef916e61e. 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/USHM81196940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2902f1f64290f30d9a2f3b60987869198336bf2e81fc49061d6c27b8d5084ec5. 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/USHM81196943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddd0daf0590f5abf2504e772d6860825a0ae4adddb4eb37898401242361f1f88. 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/USHM81196944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60e566731e94a5938d873bfb7ee35c1d236618a81b2404daf7f352deadebaae2. 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/USHM81196945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x196eebead87c6f2bf0e0b18ae19a3f2f5a4bd98a426f70289da257b6a81efbf4. 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/USHM81196946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0b714eb883298d9b1f03d0a42cd1286ffca41a58867d7a5619188f718c30e02. 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/USHM81196947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdac73bf4b0e6757addaa0423fa1e81f88ad9b4584a6ca222df2e5b84464c7837. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/USHM81196939.
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 0x0cb21a513953c00e7d14de201f7eed72619b3129bd7623dadc01ec75415615bc. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/USHM81196941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e981f80df4562d41f1b497409423d89e412a2abcc26239d6e034ee11d8a27c3. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/USHM81196948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4beb6b38dafb15dda16613acbdae79a343a13bfbce010f01a09a3147d5ba8ad1. 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/USX9P0727224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25f04fae261a6573e6bc1b4a19359ea1fc08c43837c6b5a50973e70e92fdcb85. 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/USX9P0727226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5edb7dcbd81b0ee97a64d8209f24f81dad609912751bb11cc9eead84b79fbe5. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:43:51Z), 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/USX9P0727227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa553c221e197e27b23eae33e6a7ea645aeb54aeb268677b6bee853f1285fa35b. 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/USX9P0727229.
Bicycle Race Remix By Plus-tech Squeeze Box
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcca925a5f7c7afe68b8e2f4384a22fbb6e97da8fb05b997017aacf1a304d8ff2. Chain 2 (Bitcoin): anchored in block 957025 (2026-07-07T10:59:31Z), 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/USX9P0727230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fa9136cc825386e030f6c8d4b98578327dd657af3c214b5ee2b2d763b234a37. 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/USX9P0727232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac604ef136972281c943c473abe0588174d7945dd823010adb7896bb54ad9436. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/USX9P0727223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dab51dea8869847b1d7f7ae0b26de4cff9f9cbd53ad26deabdc5582419bbef4. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/USX9P0727225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x688192d3c6b54bedc3445bff5989ee839a8584439297c012df0e570105ac998a. 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/USX9P0727228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e670ad7aecb66de5b07efdefa4780e7090a032b1d0788fde2d9a4a82809415c. 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/USX9P0727231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x912fac035b9cb137e15431e189dfb1c97cd2d589f743a860c910adc386edaf0e. 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/USX9P0727234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2bb6354f208ba0ced0c27b86c4503d619100d6b4fb8301a3dbb911cb119faea. 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/JPM400700075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x800e4eb81dd7e66d9e7f20b2e7d0e4571a8f524ed39f607b14f3ed3df45200a0. 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/JPM400700076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ffb76926c03368fb25ad093cc51da22bf539d1e1ac8ca177320c06a865f488b. 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/JPM400700079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7926b43720f7738ce77496f49ca366c7d95453562d8005d7711d1817f4041f8e. 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/JPM400700083.