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 0xf1b615e8305a36603cef9621cd6fa1b68a9abec4873e33e7a29261c2592c7eae. 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/f4e5f897-a753-4818-9fc2-ec19755fb8da.json and https://artists.proofprofile.net/proofs/artist/f4e5f897-a753-4818-9fc2-ec19755fb8da.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 0x90508619f2cbf658b5daf7488d3cfaeeade24d71cb70404c8c02414d08c9cc56. 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/QM6P42220774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbd696d480db097b0c54528c64e92a7f4924b0b6e7964db2d105482b79e16560. 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/GBKQU2365620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90a13bc92a6ee157416a55d26e47e3dbf50ba2ceb451c54f3bb2d3df21770947. 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/GBKQU2319759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1379800d079322008ea3b8a1f2f0b647c1c34d7f96cb701ee2482e6546443e5. 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/QMBZ92256573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2bdfbb202a08c3c28009b938daddfb3aacd04e55dbf6fdc9cb4b3d09dcb295b. 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/QM6MZ2274596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f153781a7020695d7cb3189a85a33cda365576c2ec2163a7ac7259f4e3ac2d6. 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/QMDA62210644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61488c343b83d9fbafb0517ec3a8dfcb90154cf5bc4cf56ec557bbeaa4dc4aba. 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/GBKQU2355069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e7eabba26ac41fdc441a20c94d65debf0d11a10a3d6941f0c845882698d1174. 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/GBLV62320577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x408f87faaf4470f149d230aa67c390389d91ee144491c91077d8a046c490dd7d. 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/QM6N22288568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9071137598eab1aeea9d87f3154125aa52eacf1b74186025b767ccbbd6cc0aaa. 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/GBKQU2420181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fb2758486e6a1c8be281115e8d02bb87fb8eaf76d0bc0e786bf13c4de7714ea. 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/GBLV62305439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3cae376ce690659f75973e0ae5a20c09761c771afa54ddb7b72a6da22f6d247. 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/GBKQU2394403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe883db4e5609f22770814c1b42c2f06953d2f45823c471eae8d4ee629d7472d2. 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/GBKQU2377731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x698d7a0308fdfe0ad133d0f8cddfcfdea919dc08161c119d32e829421e9f5619. 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/GBKQU2336991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fc0cabb7ca0852b5c7078a5f3f9b315ad82c3ae06299a0e26538756da5dab31. 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/GBKQU2306735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbc259aa8c60cd9c84662f318fe0d42091ca0d7dbfff6b84fbda124f8340af4a. 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/QMDA62279328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0ccf85b4cdf799368278b0cb6df4e5f5990e8c605df554f22c13a19964fc02d. 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/QM4TX2284100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5422143fe5bf2c9d6d429384a32f6445895a93e8cd7f96b16760fb6cfc3984b1. 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/QM4TX2209016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18c2a779d007dbff5ecb71578593a8bf59beee7a23c7193b049fa311d0921003. 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/QMDA72186536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe335c7a241dfa910e53e231b7e53c4d655d1a59c5f2738b6474f305d29b34389. 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/QMFMF2113544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdce5623aa3a41606f476ce2bd89535de39875d70bded08c81468f96d7be44728. 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/DEH742508792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56df99ce78b8ac237f71d0864727a834ddce1d8927665b0ab2f2fba62265b1e5. 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/DEH742505419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b7186a2bed7f859708c333596030dd57afcdafbaf022297033c0a52fe893b4b. 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/DEH742502064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf991ed9ccc38751b1d496c0bf92f50e8c162f4c8d55cfefb37f48ac9654199b5. 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/DEH742443247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5cb29ab0a621444d8852ff5cd03b45191d7aca174d27d8c844037738e43c520. 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/DEH742439462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ea1cf76a7c00d25e53107962f7618035821b23cef28692a01212dda8f1a8641. 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/DEH742435059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00252025525b9f0587f31875714c131d3cd7fd52320d37b880f78084876aac23. 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/DEH742428823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0be4439c404f2d52c77e42d4b7f49218ab9a909708589f0ef1d80190d07c7402. 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/DEH742423653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86269e0e73918590be5728f7214301aa8b4543960b4ff49a0b4eddd10beb19e8. 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/DEH742420993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa878a942c1594e00ba189e9ca21d3c31bd0db20d92e860a98acd44c1972917a. 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/DEH742511911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b7186a2bed7f859708c333596030dd57afcdafbaf022297033c0a52fe893b4b. 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/DEH742502064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56df99ce78b8ac237f71d0864727a834ddce1d8927665b0ab2f2fba62265b1e5. 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/DEH742505419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdce5623aa3a41606f476ce2bd89535de39875d70bded08c81468f96d7be44728. 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/DEH742508792.