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 0xbf8e299baa642ac5e18ede226636388af2053207437a3da592c8eb398a36dc48. 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/8c051549-ab4f-4f7a-86ce-a297fc3d69c5.json and https://artists.proofprofile.net/proofs/artist/8c051549-ab4f-4f7a-86ce-a297fc3d69c5.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 0x744d3b75074abe0c2aa148d6097c2241b55151081bae3c0dc9dd5f3b81ad26de. 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/DGA072417353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81048351fcffadc565bcb9fb6bb6ace4ea5ea9120211da636b07f7cebbe26a53. 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/DGA072417354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbea547ae6c0b0b0afbd8cba18796f1170f8127466e5ef15c9f2368c9bd66338. 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/DGA072417355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eb0c96ea906a45eb80b77a9fad0dec142c313264f202a0ca57f90caa4dbcf3f. 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/DGA052492473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40fb91513f4ff5241230ced3ee8fb0921fd72dc420b5209906aeb70eeb1af150. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/INUM72400498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7888fb672fd66833ae4a2b9adefe35ae548408606b32a7272a051b641736177e. 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/DGA052442527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90a9ed9c543c504f61cd7120304c5046ae5af9edb61dfdc0b89782b8903d042b. 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/FRX762443662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf36c1ce1423eca629a7bb95773aa179bbaecf0f280eb70b34611a4fff2f9b375. 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/FR96X2425653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d5a59dcb91b9997aad47155a27dab5c5276cb76ed30acffea89c1d98bd76e0f. 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/INUM72400088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf86133b9f82513d0921dbf932c3d32eb4e27d5fe15abe312870834f13ec1b0e9. 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/DGA0Q2398743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb58963001130b970f466aefe1cf65965686d7de853ba5a39f929c03c4827ca9c. 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/DGA0L2342605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x182d594f039fc2d756ad06e27250a24c7cc6235e0f20d0ba43ffab20217bb39c. 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/UKJ8H2308408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd69d4bb8b7705a0e629feb8ec8736345b967b922aecd5eecf2d705120b685713. 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/DGA072305586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc88c92d4f238dbe07e000000645f3548171c3bdc00242d2cee6503fb540e29f. 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/FRX282390143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57096340f9da5445576a1428f854eec8ee451c26a7ddd3c52cbdbf56f31dc4f8. 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/FRX202335833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20e29f573bf42551b9eaefb1e346b6040d257ea73cf5afe8fbed135ee73716fc. 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/FRX202335834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a168e33b35f308e4afa4e4afea23f45a35978941d543e74a41dd72fda98584a. 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/FRX202335835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29f0827c0d5dd409c9ff14b058bb0ff73330b1942c2da8ac3843d4f966d31de0. 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/FR2X42379649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22a2f3848f161359788e4bb66feb49d7e0a4de4b7e098eb3cc6ec40305475ae3. 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/DGA092220339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5317511dc563261cf2e1f94a6eda30bc141d6b6f392b5dc9a0501a8f40c7d37. 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/DGA072281082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe893439588cb6281861dc13718273eb4a488eb2b1723ec5d4a489fa162c2951e. 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/FR96X2227707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82c920dbb1472b3f46a90a0602ef7794cb3cba15266dc17266b0a42f8b2a5b4b. 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/FR59R2273660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa05499136940ab22bbbd5fdb52bcc60e942ca7f4c5d51b07f4b37bd95f0a47ce. 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/FR10S2231495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57f0cb47bd5fed2a680831a51ae8a071dd61320b214001dbb14fae3cf73f008c. 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/FRX452132689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8168238ee5ea42ee902428fd8819b6c25fe3a3f949205db0ef304a456ed7b53. 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/FRX762092401.