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 0x3396d1481fa15868995d5c5a9570b3ee50251a6e1471fbfe92cd54b023d84615. 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/ad426b6f-d3d8-4266-bea0-f045366a1038.json and https://artists.proofprofile.net/proofs/artist/ad426b6f-d3d8-4266-bea0-f045366a1038.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 0x741e16faefa1fe5915309120f49d0683b0b7c32b0c01264ab84c0f40a526014e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEQ321400093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd118d035d934c42a9e17a3d7993494518c23937cfc61f19a0dec74f81ae7015. 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/DEQ321400102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c78ff607118de5169520e797eec4155efdb63915651d62254055a91c7e06ff6. 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/DEQ321400103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7ffa206efc0450ecea2d3d110a84977c988e3ae9f27dd47e800548380b1f3b0. 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/DEQ321400104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c15ff2cd2923824468f7e79ec45b2a10b0b681dad81327b163a12c5c26632cc. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEQ321400105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb11799c6cedbea5d47c1d486a66a3454a0d13d0e7eb70a992f6b9dd37b327532. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEQ321400106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6051216de6e790361a8d88ae03a9a64fa3ff8e8f034adf08d5162df176b09a7. 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/DEQ321400107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6daa45e3d1e0c0a82599644947f64fffab9335a8b277d1e656c725e887963bd1. 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/DEQ321400098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8c1e5ff39cfc236c60901a7ea2e71465fe289e6b4374b596169a1a46ef03946. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEQ321400108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0271a0e64edc9b3a47d21a4d4507262dd9b5a050ea3ad8b32639180bfd752edb. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEQ321400109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e1a65ecf8b24731d451e275b18cd3013fa744bd140f8eee8f96ef85f4555770. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEQ321400110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb94be293511b327ac0b54dc417a310b21107dfaf447e4b41f372066b0413d46b. 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/DEQ321400096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4cd9c36177c5a73932becb30ae4cea966f106eaf520e78a789f8b8a654b107c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEQ321400111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc177fb54a49ffa351dea09763d34691bec45cfac2bcb0aa9a259b14002cabba9. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEQ321600148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb84e48b166813610bc810e74253bfe4625c118661d5fcddf22c377bfa8a5dba. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEQ321600150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x741e16faefa1fe5915309120f49d0683b0b7c32b0c01264ab84c0f40a526014e. 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/DEQ321400093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd118d035d934c42a9e17a3d7993494518c23937cfc61f19a0dec74f81ae7015. 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/DEQ321400102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaadbbf691be0b935d60e476febfbaab8ca872924c5332805cb9a0f6be3412905. 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/DEQ321500275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c78ff607118de5169520e797eec4155efdb63915651d62254055a91c7e06ff6. 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/DEQ321400103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b5c7cdd5569b36bdb8b33b5f24284a04fc6d0ec9c16a964bd52408bc9aed367. 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/DEQ321500276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7ffa206efc0450ecea2d3d110a84977c988e3ae9f27dd47e800548380b1f3b0. 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/DEQ321400104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbca58285da4b02ab6059c6b19a3936f83d85fa303760e8658ec2a1387f3cac45. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-21T16:32:30Z), 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/DEQ321500277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c15ff2cd2923824468f7e79ec45b2a10b0b681dad81327b163a12c5c26632cc. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEQ321400105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x008e8b0370b79b502e78dc257bd84b1ace812425fff125dbaa38229ffdc16ae9. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DEQ321500278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb11799c6cedbea5d47c1d486a66a3454a0d13d0e7eb70a992f6b9dd37b327532. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DEQ321400106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeca10e55e39955e2ed6610d21fd91ce15a03bb21238c49ab7f386362d82c9918. 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/DEQ321500279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6051216de6e790361a8d88ae03a9a64fa3ff8e8f034adf08d5162df176b09a7. 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/DEQ321400107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b5bde54750282d3eb3973e97f7ef26292fe35acbc4eb8d74fca833619e994e1. 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/DEQ321500280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8c1e5ff39cfc236c60901a7ea2e71465fe289e6b4374b596169a1a46ef03946. 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/DEQ321400108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0271a0e64edc9b3a47d21a4d4507262dd9b5a050ea3ad8b32639180bfd752edb. 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/DEQ321400109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c49da0de88a0a4a453207c816d785fafa63a5968a5622dc38a8e9f37cb68173. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/DEQ321500283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e1a65ecf8b24731d451e275b18cd3013fa744bd140f8eee8f96ef85f4555770. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/DEQ321400110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4471e4d4b2cdd0e9e5f6fddc4ed72d7f5746c2fdda1c857db789ac29f98ca992. 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/DEQ321500284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb94be293511b327ac0b54dc417a310b21107dfaf447e4b41f372066b0413d46b. 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/DEQ321400096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4cd9c36177c5a73932becb30ae4cea966f106eaf520e78a789f8b8a654b107c. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DEQ321400111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29ce605fc35ffcb645fa8708a789af648ee90fc9b4f3e332b252d16fbfc71d7a. 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/DEQ321500286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17c54d444c79c59b76eb6b2e0c271ac3354bd808d2653f8269ea1fd45a11d34d. 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/DEQ321500273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x634e75e3f71b39ffbc58585c33984dcff3bc65de553f4821ec6cc2c7354dca00. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DEQ321500288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21519943ca6ea596b518e9bcfe03e419531723f988612bc72df95375e03ef950. 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/DEQ321800371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a7e56f76dfe8e9e068af52e1eea05e06086cbe0523f0a34b23f12de6ded1e59. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEQ321800419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b6d2fe2f5b017fba2818c35e23bf51574436e20e60a624c31e34187a9838c0d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEUM71503772.