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 0x73f696c9cacf84b5785dbc1c4a21e227f9b834cc642a15b48bbd1012da0a1f5b. Chain 2 (Bitcoin): anchored in block 953808 (2026-06-15T16:45:15Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f494b040-18bf-4d4b-9a18-b11633907f14.json and https://artists.proofprofile.net/proofs/artist/f494b040-18bf-4d4b-9a18-b11633907f14.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 0x94282640e88cc16855a5b3d0b2563c7f180c6192aedcd3fe904191fb6c7f7827. Chain 2 (Bitcoin): anchored in block 959109 (2026-07-22T09:51:50Z), 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/GX89G2471690.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa14accafee4445f10bb08e353c2f81acbe17c204440190e163d3c9622dd53b5e. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/GBSMU5863508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc8c76499b0608b69d52aa5037bdd234748ca8b57ac9eeda46e4b8cb7eea8447. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/GBSMU5863509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x098d1ac74b8086123f7d3ea5d89d109330ed93ea433d027b282f1979fa5f1817. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/GBSMU5863510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a6d4f10bc3c91d80497f3567808cc6129b0331d8a0a824bbfbb8ce0bd630a42. Chain 2 (Bitcoin): anchored in block 958493 (2026-07-18T04:34:53Z), 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/GBSMU5863511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fb8df5f3c91e2dd4b3290418e19342b264367d790fbb1f8119f24308605d977. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GBSMU5863513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57df7a6d3c7995a2d4a857d7d70d2832fcc33baab57a652885055114fc6ec2d4. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/GBSMU5863515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a86430031e27eb7db335d3cd2b0a12ab689698516393db3aa972a7f8aa9e5d0. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T05:28:24Z), 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/GBSMU6922738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6214862d0f2d7ff0a118a85747fcf60830ef828cf8dd33fa707d2c9a14f1d9ea. 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/GBSMU6922740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e503e276838559ddd1c292adb6501e758a0f436d4403eee62f6a43abe9302bc. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBSMU6922741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6da3afdb0c775da7c24f05999cb0bad9568b5f6d13cb2e85d5b55f83c9bdd85e. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:51:42Z), 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/GBSMU6922742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33e07ff41c636a275cd22c581549b5d28d6424b12264cc7a907a0b57bb2173e2. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/GBSMU6922744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bc47ea9cf5c7a02c6f65aa2acdd64ae4c16c0c49389bc0eeee01035165d75da. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/GBSMU6922749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce1db88fe4dda72c42a975109c660799c1409c881bcb00b8d88b7bf9b63de1b4. 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/GBSMU6922754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c2b16f2308f93dac82068acb4e99964623ee0780f92632807921cde63b5b4a6. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/GX8LD2260904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3679637375b6be402a259753bf48d3dcad4dc523046d9f9866497709e033f3db. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/QZWFL2442875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f404d0fa1b83c88716b8e2d755fe6b37ca8e31add4cf79fb1872f15091c5d59. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZWFL2442876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec20441f843702a5a535699d99b435d72e8402c7de7c8c5c022c068981ada753. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/QZWFF2478865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe43ec867756b35b2491a1c930ef2663e384b745d55d562923564afcd942a45c8. 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/QZWFL2442880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x307c5f8d3a745df97b1b14cd9d65a1f276162cc29810726cd440424fbfb4641b. 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/QZNWS2440653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3297c717a071e8b270785dce9c6c44121068aca77817c5b0efa44020fb0aba6e. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZWFL2442881.