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 0x8f149dc03da1fb2717f295690aa55df76ba4b7e08a48aec5db4262b4be6fc498. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/95fe9a77-42a4-44c6-b2e3-f6211203c930.json and https://artists.proofprofile.net/proofs/artist/95fe9a77-42a4-44c6-b2e3-f6211203c930.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 0xf5f6e9f1de6afe2ed318359545e9a27d20a4ee1e92b7030c038be046e95c39b4. 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/QZES72514282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x978baba136aad30f30a5f585c35b80691ced7f406651310f1416fe2f05fba0ae. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZES72514284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0b46a53c8dad0cc690cedd530ed451f0d4dd17e4b2a068e078fea68a74e38a4. 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/QZES72514285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6baf62b95580e9927dd79a355d578f87e6cc52f7277b542be859d88d7b00e9c4. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZES72514286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57c21b39d1daf243ceb6273663248f12f1b4455a576df69a91e45cedc8ecb965. 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/QZES72514291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x834bd93d17d37f773acdf84b770b7dba583278c00d4f2880b9d1897d361e4757. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:18:08Z), 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/QZES72514293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cdfb031e00fbcd7b043a68a6c385e1047887795fdc2ae7f521c754286f40efd. 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/QZES72514294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb48b7d974095e0e6c4a0dccd0bc5055e2025f8677d446ae4a12890281f60e15a. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZK6K2572684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fcaafdab74e05e3861f5650d1e9e0b92889d3b41a108d945d6ed9448bc3da17. 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/QZK6K2572687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5810b6aeb6080c03e652b2e4a55b125640ff7541747356f8bbb2628f202507dc. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZK6K2572688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb00a952ce4dbae406bfe8eff539ad94248c7901054aae73914eb61fb2ba712d7. 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/QZK6K2572689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a71bc19d43af063dce7f4cbed5d5e25333223347caa4038f37dd56d4189b8b5. 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/QZK6K2572690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3444d4ceb78ef79b66d2b3fda6e744ce298d2d4a5e39047b3327caa6a5b7466. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZK6K2572691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69be4ed3b76354be6fb7a37a72caf319100f5dcb059f622004d8fd96087a1146. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/QZK6K2572692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbce86cbb944a09217ab114c27e79337bbd040c603732bf05aa1ef6ee92f04733. 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/QZK6K2572696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dc084f6b0776037a50aa6f81feae6babf32d763180f30baa97e61ce04305368. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/QZK6K2572697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x644109344018edb6b62925203558758979ee01127e31dd2b2d1ee6c01e7099e0. 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/QZK6K2572698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2914772b30904f8465ac2cdc802d2f9b54a7ae1d016f2c359fb50dd3c948907. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZK6K2572701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5295fc86a23f276382e6e35654c7e00eba5ce7118d2be4ad3860eddcdaf1e514. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/QZZ7M2570669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4e12899a922a715ed8ef87304ebff3090b1c31901c97c455fd4ffa9590f246f. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:42:48Z), 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/QZZ7M2570670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5847fe819637df218fbb9545cf7f8d821f0775719ea2d69fef9384850d3524ed. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:41:13Z), 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/QZZ7M2570671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x208ca39eca040f79d3919e719f09d8e04136cb5b6372c7af06cc994bcb0cfc6c. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T18:56:44Z), 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/QZZ7M2567040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf502a60b43cf848d0bc25f33dd2c27b57197afa89ba69a253f26cc46675d66cd. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/QZZ7M2570672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe76699342115dc445d8c890f3cd4c854c37d7fcaaa42280515f4031365c4c337. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZZ7M2570673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03451daf48c2c623742dbbdb8939977053516911ad03dce3d6b86478a0d61027. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T15:16:11Z), 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/QZZ7M2570674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x083d06d5438f4105f82ec7f6dd1f59a9b9c7234653b5cb3a75036911c2d48227. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T03:52:09Z), 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/QZZ7M2570675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3fdfa0cc484783b14ce3568353d012f22ee8e7cf04a03361ab0e4a591b06d68. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:28:29Z), 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/QZZ7M2570676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c8ceb6852e45c4e57ff5195c7c4b104f10df5e59d2935cfd8427ba24412b993. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:28:12Z), 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/QZZ7M2570677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a22f8412d1d421bd7609a211e4c33ac81ad36f1581999194f823c4c0f25fae8. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:49:20Z), 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/QZZ7M2570678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2faff8679405ef42d83ae0c4a54db231b634ef8d6e9e52ac479c0f3908270787. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T03:52:09Z), 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/QZZ7M2570679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f74abec4bc813703a3b43f7532617d2a0227004a214f45288997e84df2595cf. Chain 2 (Bitcoin): anchored in block 958819 (2026-07-20T06:52:14Z), 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/QZZ7M2570680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda9a690ac0572b5e402cf81613c7f880d49dcd490851197bbf9772db80af77f8. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/QZZ7M2570681.