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 0x1402960b061d5f51afed3d19b88eca8daf4cf8e32ceccafd2a9b9d5c1a0ac0ea. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/53374343-0056-4752-ac7d-a14af0a12f78.json and https://artists.proofprofile.net/proofs/artist/53374343-0056-4752-ac7d-a14af0a12f78.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 0xb03c4e010cb346d7773e749aab210c830a12dbc637972c75225d00cf320294cb. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/FR96X2131674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6970d7ad05d39ef6e2cb30a91f26253b9418dbe8babf219093aafe358f66705f. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/FR59R2197204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb972d57677d77dd05688db54b268b621a75580f7260e6c9cad4991bd821df11. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/FR2X41834985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c13848e052ad21d91db1969b5d8ea25ca5d241e36caa4bd591b5023d6ba09b1. 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/FR59R1895460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x275b35a64b8389a071d7e9aabd44dfb84b2f9e46f185f2d0bad6c88457b9a319. 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/FR59R1895462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1345b1814ed9da889d34331012c3fb1450dc648d02a0af758fab5fa102c0956d. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/FR59R1895467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1d9cb7f9373345b06a5515425443ea37c45fc44e303a3f7ba9f60303e3b2449. 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/FR59R1940435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa74f617e9760feb63ff6bd8e1c633661fa6ce34095742cd9d1b6809178d8acc. 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/GBMA21920567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54793420843de0d3e07932775c16810f44f75b2b4ab2c81ee42c0c204cf80ab1. 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/DGA0P2402342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe308d67b5c6fcc287f153651e240c56f0924a7fa8ec441637a135ec426eaf6ac. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/DGA0P2402344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a5a70bb3a4f693f050abadc1cc280bd7bfa6431bc5f4b9cb67bfb44249e5cff. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/DGA0P2402345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51619ddbbe31397370a7a6e6b5674b60451ba50e0c0709df410395cd590b2fe3. 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/GBFFM2491967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9498a35831fa18dceb45c40d814d205512891451107cd452b7115859f7951b5c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/UKFR32100541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6f5054872062a2610d1b5c617f337085cfdaa98629cf9c2a1fb04e2ca09aa87. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/UKFR32100542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca053fd5643cd1fd33bcea5bd36a60c697f0ba80ea87189cd4159a0b3b17e961. 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/UKFR32100544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b7b4f94e2221585b90fbad3207858f037c1ce9800c0a86172e614594cf97f59. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/UKFR32100546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83b76137d9c6663a8074f91c9790cc3cf1821d47aabaa8a71c716ae535ec9158. 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/UKFR32100547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x664334851234d35339031f0f0abde5927e2787d6baa67eb9bd8999dfe2f53e7c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/UKFR32100548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe63ed5f2cf70401aec490aab21702117e4382275329e1a7fdbaf98558dbd1b8a. Chain 2 (Bitcoin): anchored in block 960288 (2026-07-30T17:41:38Z), 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/UKFR32100536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8569501e8873096bdec715237047ca608a6100d58165a56838ab966122694eee. 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/UKS2H2000004.