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 0xa5d8bd43edc667f3cb99884ff1096c585e5bd41c33325550798c498aa7f1445c. 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/5839094f-19d5-40f7-beef-daa6009bd4c5.json and https://artists.proofprofile.net/proofs/artist/5839094f-19d5-40f7-beef-daa6009bd4c5.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 0x2c065e1cb5bc7ea73e3c816066755975be6501f20d940d13effb136fcde4417e. 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/AUMEV2504321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab120d6f58ab765f43f1de9add3c37090499df217118d8d99dd4463282b101c5. 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/AUGBT2429171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7137ee57a79f2cc88ce5a3d37b12a70361d0e17338a68879569b520643e29cee. 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/AUMEV2487771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eb44367e4f7f764e13160b9863a1d41439ce3ce143e6aa56ceece565e2a9632. 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/AUMEV2425467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccca4896b83fc685c696e4e6a04944ed80a19fae7abb975d5afd79b172850c08. 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/AUMEV2402241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf19886834bb1b39748f8d14f986851f0e4fbb1b570545b370b03d8429dece74. 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/AUGBT2314253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9671a383cb732615cc3be59244358530a459019de67a80c9fcfdccc6e883c80. 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/QZTAY2336903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f985d8dbf527dd99f4281dd225d3de92bdd296f2016bc32fda276642956b32f. 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/QZNWW2374313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x002b20fad30df128dbc076c49c15795885675e3ba77f8bb5a7815e306d63a8b0. 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/AUMEV2340462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3d3e9ba5806b174ade81ffcc7596c341a023d84bf1e06e6eb03d665ec3dc0db. 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/AUMEV2310731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a6942c5cf0edd1ca1fcfafe0d75060d09886f362aa0522ec0b2160389d2f575. 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/AUGBT2212595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x398e4e6136e6020e77320fa017203319d0c0b176383a89431b0b2898a68f7ea9. 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/QZK6N2239743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bd29aca8257ab4ee6223c592f131ba6285fbbaf3b3fd0f31c0a33d65a9bf3b1. 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/QZES52202190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ea71929b85e979bc0c242340dcd48d2df3105b198afa6d972c8729530f22858. 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/QZTAT2193576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2153335bc07621c3f3cde2ca8c74d2c1bd84b9e3e40e326f8426ebbb242a568e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/AUMEV2170616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83642e5c4385452ae8e7d0670d82c9a0e7747cdb55c62dc5076a2429210af166. 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/AUMEV2163162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc641e4d21965e83b222d99033c70ee4eda32fb7dfb12881a2ed4573f869c5249. 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/AUMEV2149368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79a8c439e3db9cbf51d37231d31a1c39517b256c69a06fdd39f7b5298b9f9ec3. 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/QZHN42190225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0810fe710dc0536a978945c085a99700c0ba33f6086d36f78806f7a1259233a7. 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/QZHN42189606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca3f03816ef627179ca6c434c42eb24f99dc2c0554b703508a566d99b3fa0165. 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/QZDA72174928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x624b315e24a86d74007d3850e4231cef0dc630367550dc8d00c316a23ab50c50. 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/QZFZ22103714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x189123d19039517a584aeefc7924c08e5cd5621968a4270241888f0dc8665bc9. 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/QZNWU2077820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25da8fede6742605c89c0cd4981a19b53f6ef9859b97d53794b99ff2e8786a9c. 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/QZMEP2007525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3b4ab17adaae532c51b512622586187ee4163357a7b0c33f7a904018fb35f43. 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/QZMEN2011108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef0acef91d2fe78ddcc73d068092dbc6dec2082f619974e0e2b97dbd7e1efd83. 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/QM24S2008005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82880590b331f24b12eafcafeb71e3a106adf6d063e24f3f5a6f41d3de4e60b8. 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/QZHN82033113.