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 0xf4899d50e02d49114dca977398d89e8b606f4c39be6a8b91aef02c741490100b. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/eac92273-024b-4bf6-9c3a-29b324862005.json and https://artists.proofprofile.net/proofs/artist/eac92273-024b-4bf6-9c3a-29b324862005.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 0xd64513d4e070df6bb65facecce2c4030d31168d730bba369f892da5d20c63acc. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/TCAIQ2453458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7094fa7c3435fd1c1e5dd920d67af1569ed644f9baf1c8b72a7128772527731b. 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/TCAIR2453460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c4dc52f543b79a50b33e31cd6226bb76b05bc5e3f6dc3a50d15ac2329075974. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/TCAIQ2453462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x195a5947e7f6dc2152ad4e16686615f504cd2dc6d0c2f5bc892778ee464d7e57. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCAIQ2453464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2e7feb7729791a5534eb0eacd89f5b9ab84328c51aa84caea52d4c8729e06b3. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TCAIQ2453465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaccb6565783124a086371b6cda54772c437ab6726b82ebefe7628b836c6917ed. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/TCAIR2453467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x532b59b538dd18631fa6bdd824833dadec22957861ca88991e7186bec5dcd66d. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/TCAIQ2453469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7bd1781f18aab050d0846bfbc8de2f591cdd9b170658da648ebe0856a29fa1f. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCAIR2453472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dd5ed0f893cfe0f387603823f01f2580a3210ce5a24e5b1c330ad04b8c72808. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/TCAJE2523243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x541753e34c66ce39d298882041451ba55fae9ce0d340c05241467f13dce6ccf6. Chain 2 (Bitcoin): anchored in block 958498 (2026-07-18T04:54:58Z), 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/TCAJE2523248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x588ebc977b9a75e066b720747ec402f6adf7555399e9fd776afc10024049ebb7. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/TCAJE2523250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe6f3f5a1b90a4fc984b071607d7405a8ff054af13028f35e8d0d154e90efbae. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/TCAJE2523253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x827db9def2c18e6db64daa14489921e84a298c9b3c50984e9a97a88634fc8a27. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCAJE2523257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x136de4519be3325d05be24342d75cf731052f9205e06e1c7633a83e932d0560f. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/TCAJE2523259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbe7e12e1cd0e14c540c1a104a23c322b3af5a465e0f6d17cec4765f09296d2d. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/TCAJE2523262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3503c6811ab6fa233ed0ab0323b70e4ded5371d97af83c97d13ddac826d69cbd. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/TCAJE2523267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6136c5d89b556dbb9be176b3a0f2cd20e43b44fb44adb5b9adca000e36d24ce5. 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/TCAJE2523337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf21009bf94c6b1a35bcf28d3daf374eba1393c6d7f3cbc3ad9c3ae44896bd6c. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/TCAJE2523340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05b2e552e9b212fa113a6502bd2a8991106d15a2354db56f212c6dc5d16830de. 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/TCAJE2523342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64739a2f4bb0a074b1759ef3271232bc303d86f8ca3d32ecfd37efb5b7221655. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/TCAJE2523346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46c444d57d8600924302bb19ce169ed59222e66cca1a4315da952fa6a0248aab. 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/TCAJE2523348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57e9b0315564db6bf9a6ae2f6efae219baaa31a2942c3c5b48acc5e08a2ee093. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/TCAJE2523349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cd4210033947ff1cf35ca46e7a0f9010f382507962410583e29bbe50d8f998f. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/TCAJE2523352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacf36d9d014c0c006fda57235255d6a4902023aff93420eb7f14d2a69ff6832a. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/TCAJE2523354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a49b4133e0a2b11def05f9996e4ddb367d939ce753b9e10c7a45523039a5711. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/TCAJI2540446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e50eb08608be2aec9184f59cd8efdb8b92551ec698a1dbf9aa3a30f1e43b1ae. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCAJI2540450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f7a0a1788a98ac92f2adc6484bd6884648ee832a3805780bef7678317a3bd2d. 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/TCAJI2540453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33714fd43eb01b833d3553c9f2ed5c951fb0b0ff2c63bb659295cf0cf0e3f57f. Chain 2 (Bitcoin): anchored in block 958496 (2026-07-18T04:43:53Z), 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/TCAJI2540459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x832d7f9510c3033a6eb7ae8f1f75144e5e31d0d7b1a4e5dc88a0702f6a0a06fa. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCAJI2540464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e493133747770bac55cb2dac498b3608fc41d1f17da19de713a454d9f42a519. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/TCAJI2540469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3145f5b2755c56a1d2e4dc08bf32b1464b8e24f67d482261899fd5d581ebf096. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/TCAJI2540473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc2c603fedc4a8fde13451c514055085071c89f777a66ebefa89e8bbfb32c622. 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/TCAJI2540475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6de0068a43fe40b8b9a6473c9964dc93eb98374ef59ab5a3cff663c110f8307c. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/TCAJI2540661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x560aaaabececadbd81c56ba551ac25bba5b27ddd01051f15c0be7ea870f7e85a. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:30:33Z), 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/TCAJI2540664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ec5186e2328263e6fb63b0b025bb78ffb12aada89c223e13b448f66271009cd. 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/TCAJI2540667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86bc37df0bfdc1f4d3602165caadd74e550f717ac3171396b502d39ad7ae56f0. 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/TCAJI2540672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2af43e2c5247a09f37dd045fefb49fee23a873aa6574271da9402f06dd1760e. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/TCAJI2540677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2e4e1a9787b38579f71d5d5fbf3f2e925eb70a3c8fdb9705ef3b745b19bf6df. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T08:25:40Z), 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/TCAJI2540683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x515fcfb3530264d6345671a7adb642407533878aee870fdc45a2293145063a76. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/TCAJI2540684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fd17432cc44ef99846fb984beac0c5cf66ca5219bd615b720745f3404ef2edb. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/TCAJI2540687.