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 0xf38a8807691d14e633944b9501c1f84cdac81bcb6076e3bbbf82d9df57c2d08d. 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/cc453e52-de41-4585-9852-fb203e0bd1a3.json and https://artists.proofprofile.net/proofs/artist/cc453e52-de41-4585-9852-fb203e0bd1a3.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 0x37751e09c04c7fc52a547370a610c1322d2de7f488c2149ab82000ca952bc7cb. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/AEA0D1923105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe20957c4ff7de6e9531670868d18baeffeed6477640178b4664789393823b86b. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/RUA1H2028021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9caac243948d3f76a07dce7a43c7873255bf9bb6192c0345ecb64d08fb72b170. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/RUA1H2197604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1587eeccb1b18b940f01b34e2cdd020d4c8983fffa519ef371e78d289383a9c0. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/AEA0Q2154803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbbb117eb9b7df981a611bd9abf7554030d34f39e7df1b4164c5c8b583e8ca63. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/AEA0Q2154804.
A Song About Love (To All the Hearts I've Broken)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7df61c9d6d459e944a6759de6caac1cde7c3da75452af618a2e77fbc4b973ab. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/AEA0Q2154806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9d55af05eec2d3e4dffcf48e239555f9c0631fcf6dd75450d62bc07e5b4ca72. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/AEA0Q2154807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a34be57a8ac4e4c861ee75092086c968ebb8f92f1901a69000f8ba0c05d580e. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/AEA2M2234519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fd633a8c14ccd2579182b75c0423fe3dc936a25ed5cd346bc7dc4eed8e8fdd4. 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/AEA2L2241296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8be000ffeeb5e63a25e17bd1ef2a6dae324cbabb25f35dbc876918fba99a7e5f. 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/AEA2L2255260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1e53722d69bce651b62c1f41df985655d43eaf8de4b3e00a7be3944e3e49fab. 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/UKR6V2253083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x103b081a8a6acf18f1bbc247fb613d482c1aae03820b39a79d4e1c66e47dc612. 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/TCAGT2325348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b49f9b794434fea31f6e50d27353aabeae8d4fe72ca17e450b738c7ad4f5d64. 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/TCAGZ2351816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe8fc88fcdf5d0727f543698fabc0488e7508310eebe786e034406b68e93240d. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/TCAHB2307765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x883557a73a05486dc4b6c2db93d0dc37a4b28808d9c2f1d84c62b03f0d7a8bae. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/TCAHK2372428.
When the Sun Sets, I'll Never See You Again
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa84fe212fd262450733fe520da7b13826a103f4d1a951146f5e0baccc06e5ee9. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/TCAHM2383503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6300b06910d271489d4fbd5e9bfec4ec6c3b233972d2565c0d489a0742685fc7. 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/TCAHM2392232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54f104558d298010c2328a78c7ca42ac7190eb0b08cc13dd8c3815e3bc8726f7. 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/TCAHT2312623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26e9c44ab0cdf3feeeb999df58a49d78e25413817e4cccac12821dbf9427b649. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/TCAHX2424565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa291c0de65d2fcc5db56df81ba6cd336194f04021ffe7bb551683f434a760511. 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/TCAIA2449765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87144f24f3b761fc3dd2a186cf7167113509e35865beb5e00100aac645491254. 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/AEA2W2427238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2fa6a1f633fea07635cf052cf3e019089d1a0b8e0943fdbc20d439e4530af67. Chain 2 (Bitcoin): anchored in block 957522 (2026-07-11T04:46:56Z), 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/TCAIL2476775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64115f7695125c7e2670bba3a3a4017adaffa432e2b5518e272734c0ae6f3c6a. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/UKEX32439577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc66df338a6d3a4d63825635001956b28379ec75c93ad1e3486df35846dead13f. 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/TCAIW2447174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0e12d36344181604e2ece985004a6f1ead32a8624c816da219bf529f36aa863. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCAIX2405705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa68a5d95fbf2ebdf0eeec18496facad1e88d1b99c335959496631d2af33f0af9. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/TCAIX2405862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4966979b8adcf2ab8d5c9d5b03677fd144e4f24512126e0685a624ffa206fd7d. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/TCAIU2409026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0a9c317ac5d86c6e6e878bfff136fc1766bebfa686cf5d422918e5131f48d6b. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T16:15:11Z), 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/TCAIX2405757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x147f8df06f2b3cdd168d0be39ab2bce4d23c7d5adf2b26f6d98d485f06fab3a0. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/TCAIX2405633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x671e54a99a9d8792dff5248ff4ed4921487efdd5d0dbe47c698a4e614a0efbee. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/TCAJA2443032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08bda4525c0515c7d45cffda9b16f7405692843de30cc692a5e2de84df522867. 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/QZWFP2321512.