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 0xc9929e7818fbc57df09cfb3921b1772a1e80e7450773ac76139a674160eff714. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ea8f9a2e-47d6-4033-aa42-95914d1420b5.json and https://artists.proofprofile.net/proofs/artist/ea8f9a2e-47d6-4033-aa42-95914d1420b5.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 0xcdb0f7d39e93d3234ae690773a11eaa5ced5f62d3d7fd1bcddb6ee96c983235f. Chain 2 (Bitcoin): anchored in block 959146 (2026-07-22T18:04:50Z), 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/ART0G1801045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa42d5b84609b93b8016b12c5edf6f6cafc33545415f0909bd8a81d52afaa4594. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/ART0G1801057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d8c4ea6dded0851e4006dca6331a3e5b2cbf0c56aef52dd22e2e0231da429d4. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ART0G1801042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5513826ad79efa5a76b715425fc05449d14eaa7b95c8876c4a9f99da97633053. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/ART0G1801044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3311ce62439379ddf583ba6502d4f7de4af080328943ccbdbca1d3028e710610. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/ART0G1801046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabdbc91a58f6783c363d5a80146b3728aca545525010cfb6b56a944660c68b48. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/ART0G1801050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x593259cb1fc229369147f0810c5ee51f947c679162d3b71d43c2b0652230c912. 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/ART0G1801053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x076c409b8acc361a0d3652216f6d08041e5fd6dbc78b5b3145afc92537041d39. 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/ART0G1801054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe75cb9c821e1d93634c317e1828c2bd311a293b2e8e49fe6546c839f102c527d. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/ART0G1801055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcb35361d74683e3d6113066efa2adf5c2341216a36c60476d2d43c4ec344dd5. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:56:19Z), 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/ART0G1801056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea5824b75063513b513aa655f24489a429c0272768133c2372df38dd0f73992f. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ART0G1801061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf988119a960e7790dd81d574eeff6446ad1a7aa7edb64fec3ed0cf9af6069fd3. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/ARIXB2102701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b53e624929dceb3026947048887ff1f3619645c0687b47e81e6b84731dfc3c2. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:57:24Z), 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/ARIXB2102702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b53e624929dceb3026947048887ff1f3619645c0687b47e81e6b84731dfc3c2. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/ARIXB2102702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71fd19c4fafb57512085514bc9b9a75a72aae2f86a4b102ec43c1c0c865f50cc. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/ARIXB2104393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71fd19c4fafb57512085514bc9b9a75a72aae2f86a4b102ec43c1c0c865f50cc. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T09:55:17Z), 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/ARIXB2104393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09bd0b14e5aa6455ad9d187ddc85d1feb4f9f3e0821574ff2c2250e0e57ae29b. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/ARIXB2209569.