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 0xbc7d2b17d90172a08f13be71357bb303127bad8373826dedeb4ff9bd02a3cd4b. 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/5681a81c-ed54-40ba-809d-f379b2347d87.json and https://artists.proofprofile.net/proofs/artist/5681a81c-ed54-40ba-809d-f379b2347d87.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 0x30e1e33d7d2834bcd822fe041d02a2426d4ee46fbf97e795ee463a67934bd419. 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/ES71G2403837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6921e89b074732ae11ae83d0287ad80191cc2aa798ccce0cc76cb5a08e540422. 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/ES71G2403838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2dd1da458890d7970493c9478fcfc6d72a7f23380ed053c53f5b6a0761254b9. 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/ES71G2403839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc366e45cb98a928af6fbc7a721ef8b046742c0fba5cd5be8729148426b9c04ed. 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/ES71G2403840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc83b5c2308929d6d499de68c3b14f5ed2319aebb4ec4dffa8dd705077a5f31ba. 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/ES71G2335049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefc3ce691d74405e38d3e227190eceb2c6045ff4a358163fa4b8eba3a94eaa01. 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/ES71G2403842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd03d397cb89fa84184bfd80fc194bbe3b7881efed23500f2ef49b7faaf0f4c6f. 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/ES71G2403845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e5982ca01f73c40b145daefc70505800f66cb6732c09a272f9cb5607294f075. 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/ES71G2403843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9289ed23087b34f85ec9a088a29ce22a35ff3e49ced53e115305a4210b7d6f5a. 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/ES71G2403846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3947abfcd8c8ca929f27e3d75c484efcf3108bfda09a3e96ca4494666e6d662. 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/ES6081940804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd137df72d7a334444c694073e76fe16713bfec8ef8fbd4f53715557313555c39. 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/ES6081940803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc6c7cb280517ec2f76b88c8ba964864d5531dd6a8484c1d880e0adc0e4c7cb6. 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/ES6081940805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff0d4b09e2b3b1468c0cb3628b107d0e405ac9909d00b93a327106ac48c6d100. 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/ES6081940806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf14654bb5bee80bbd1defc032076f8c807e816a48bdf8f8c1c2e8a60000de0df. 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/ES6081940811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98f9df2919d93da4d77a1faadd0f354bc18bf053d4a5569cb488ec14ed2e558b. 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/ES6081741103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92d952ad435b290b4f40e5ee0f62ff1170722e66ab76ce91227cec1e956b728f. 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/ES6081741105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06cc87606c1bf43411287909522f0be5ff48520365a9d92a600b4c68219e394d. 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/ES6081741106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0554921f8cf516b715ff7e1184854851020154658cccff2b0a914195ec5c16a2. 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/ES6081741107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x610eeb188dfa945f3328a75928207daf1d1da7e6a4e4cf462dd6221aa689e4d4. 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/ES6081741108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa21e8757ec3bfaa520b739f18d063d7b4ea406da0a26bb2db35e143c4abb9b17. 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/ES6081741109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd51b258f7de75e3a3a15246322013a77eab62a2ffccece34cd200b067a4aad15. 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/ES6081741110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc641f2529a598dfa27bbe14126b2ffd70db31b5431976504a08beec0871283e2. 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/ES6081741111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf362c31cf17cc52760df9ce66069d6e5f0867ee5fb9f4e2ba3b6b760a5a1d705. 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/ES6081540501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0875d67762bfbd2c3b25d910b601aecc151964af32514bd7c18ecccfbe2467e2. 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/ES6081540502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bc62ec415e9647e4541a8eede128fa9193a8521be08813c812925e511059ab5. 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/ES6081540503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdc8ceb336176bca132ba3a2f0ce9568c0a3234a1154ac57396a4af05ac6cd4a. 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/ES6081540504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8751e35936bf9d56398629825c2bcc3bf367c8699e0b6fc8d5c684868c3018f1. 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/ES6081540505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x011672b2b8341d8fe60558eb9ef7a1c2f1b3ae49c08e5de4dd1540131563a0a9. 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/ES6081540507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e84c5ea1c7bc7c3580605ec19c3b0343bddc5a203260d63be30c262eb97cc8c. 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/ES6081540509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0db7e915cb8bbc69b76dd592271d76896d6b25ecea31e15e29257154be0e76f8. 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/ES6081540510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd326529ea111ea0f549f2bb89b0ab2f7f03492e84d1ef6f2e29e939aa4e78297. 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/ES6081540513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc366e45cb98a928af6fbc7a721ef8b046742c0fba5cd5be8729148426b9c04ed. 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/ES71G2403840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc83b5c2308929d6d499de68c3b14f5ed2319aebb4ec4dffa8dd705077a5f31ba. 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/ES71G2335049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc737145bc695fbfa7f02904999fd7eef0cab848caa103f8bd57c964f7593f649. 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/SE6XY2342099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fb2b03ed9238c1d5054b217799b8c08a6ec6c8690488437b696975c6eda9a00. 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/ES6081940814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddd62e1abb0bfef976e72f5e8f2654a1d0671cf606b732c661c54ec2ae8095a1. 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/ES6081940813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd137df72d7a334444c694073e76fe16713bfec8ef8fbd4f53715557313555c39. 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/ES6081940803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x588052528f39db9fcb77c204f2755a83845b577d605cb6e67c9ed2b3a5dc5ea1. 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/ES6081641004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf64675e0307fcc9a06cb22218cdc1b925106c1b62e27723e5d5b8b86a78b0480. 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/ES6081641003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe27b541ee50cbc0c9cef7ca4c24e5fac855561cd72a14d787b5cbc5b32d7a7f9. 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/ES6081641002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d3654a272af294c0408e16247c84a76d445df77990de8b5f61c5be5e1087534. 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/ES6081641001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ffcf0dd21f2923213e76f9027c62d607cccd8cf9228bc3c8f8e707782979f71. 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/QZW9L2393154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ce445ee20246697df6bcb9fe794c33d68911f10bfc4433bdc829e2c4adf37c3. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/ES64E2300679.