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 0x236c808fb90bf193e436fbc42b98a267722dadc679a4efaf8dec3f7e1ebe9fbb. 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/c09ace0f-a8f3-43b4-aa14-bf07e15479d6.json and https://artists.proofprofile.net/proofs/artist/c09ace0f-a8f3-43b4-aa14-bf07e15479d6.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 0x549e604e048de95d8b9c5361413d44d799e68e6c06cd5a9cbed283ccdbaf8c38. 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/PLC062504709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92df73059db960c2168c23309045782d7af84524d6005f9bf0a1aa40aa1afb84. 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/PLC062509428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e3b7d3432bf8a823e77c8bb324533ba49f080b1ecf4bcd40465d5f51a2b31ce. 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/PLC062509427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53788b583d4cc1bc0e73c26a3054791ebcf2cd86285a50a533abc1c7ee20433f. 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/PLC062509429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ab7f27ce9311cc286eacfebd02adcb64090266de4886902b334595debdbb4db. 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/PLC062509430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x919eddcd4e7ca21aa3773df2a55bc619c74e8cf40992f3883fe8530e67a9f89a. 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/PLC062509432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92b6738f9cc9e4ad55a0813fedf7fd6a25c94eae5cb1df624e92c4decc18bb78. 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/PLC062509433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9191c4f1d2049e6df41080a20d607b8bd957d3323dc18be40736cf11f3dff409. 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/PLC062509434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe49a69c99279b9cb6a29d0c8189db6cd59062d51e7a67f534d913ed659053765. 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/PLC062509435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9505eaee2e0ba2af2775269c68118a97f083b7a664fe33b249db6f3290a2a3ee. 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/PLC062509436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce1f95f35a3690b4a8a1f049504ffd3a40e88fd1d27b83a9946d783d754e5e5a. 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/PLC062509437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70c289b077e11118236dd9ea9aac0168783c24f3156c82e6308d4036755cea37. 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/PLC062509438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x962b29e9ec18ff71e4c01fbe2298a9d7e69439c56cb7d6fae4486a482d849b04. 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/PLC062509439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x914432f38e21ee340507c6bc2931b33d064f48253fd7768876bb664ae9c2521d. 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/PLC062509440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf391031372f82599a88882cdf84339c8eb4d767e6915d7ce24ceb3fad75a6ad. 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/PLC062509441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52e13ac4f9af505612f73f69bd238ed3dfdcd9090c157facbc38153d08cf8ab4. 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/PLA552301033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72b36fe468f346fc5dc2b7724a3e61956a3e0db4db8e42b404732f63624c5d9e. 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/PLC062364483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde532a93bc661f04cfceafc7fe17e92b487f57510f48886e36a09e529e01234e. 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/PLC062423039.