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 0x82cc9159454f97a3c96f03e65dadbad837bcddf740a0a2506a4f37bab00b7f90. Chain 2 (Bitcoin): anchored in block 953678 (2026-06-14T19:23:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/62db910c-77d0-449f-ac50-40b47da6f734.json and https://artists.proofprofile.net/proofs/artist/62db910c-77d0-449f-ac50-40b47da6f734.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 0x36a59631ac247318d638806f5a558afbd0c058a45de2780cc264ab6e5d2f5d56. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCAHS2319350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b32c49a31e3e9c315a899d64ce3278f9043c222b9c5610d82fc5295c1dd28e8. 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/TCAIW2493216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bcfe606c7bea2e880e7172c1c1d439c4813157b6b8ca1cfe30145b7da18a3e7. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/TCAJG2532683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x799dab7b4929f6a93c1082f4983e6a6297ae88aec09c175b32d30b3ebb27a69e. 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/TCAJR2512330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22cdd1e4b5102c33ef7c1573fa2752f0fb169eeeade5e837d16fd20409813477. 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/TCAJS2512368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb8b8cb925c9521dbc0895677c716d8bc6e00473ccaf073aebc888bf779a77f1. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCAJS2512381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ec85d6e1e8f6884ec505b5f13dd8de29e059d0294c885c67a46bc498b5854b2. Chain 2 (Bitcoin): anchored in block 958828 (2026-07-20T08:04:00Z), 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/TCAJR2512391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52ea0ea8e4c537c7565315156d6041aef10531b680fef4998eb9fd7aa3dc38bf. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:43:28Z), 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/TCAJR2512400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb49d426c5e39799d9c3431767dd0208052111cbc8cfb9a6d0756d72f9feab5a9. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCAJR2512422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81dff754053e6c354b5b6df42a137f05545c20755549b3bd66641919e12195f3. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/TCAJR2512484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a550b336bcf8152d30d4d4cec96a846d3b3f69d16277cc1f26c299d29788d75. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T05:51:48Z), 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/TCAJS2512519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca9e2e720d1cb1a5d6e8f57177173efe1079ff1d22720064fb862a60dcc9a1ac. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/TCAJR2512552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40c3ef5f69e46683a50c6f3ac11d7d157fd8e41978a210c144ecdb597fc32cb7. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/TCAJR2512574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c0fae3029ecdc2237a66577a728bba1bd90479723db73c99b56f3afea204eb8. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-20T12:00:12Z), 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/TCAJR2512606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x793765f73188f9e42e28dcd8e74f701b969292554f7ce327d90c61ff7e8e5281. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/TCAJS2512637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d4846f4f3a89df3c32144c91750c174a87467ecc5accf8700f605c35c58fc99. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/TCAJR2512655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x020cad5f65be33f3de8fc544b49544012b58fe4b2131fc9c1d8e7463a3d445bd. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T09:52:13Z), 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/TCAJR2512718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdde39bed4c55a87df0691e11eabbca3d53e40ff2fda18f02f8b53715c205910c. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:38:45Z), 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/TCAJR2512733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4834eed6cb773e1c9b1247fb25465eb1ae8147a77a524a643ac6c24a4d4fbacf. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/TCAJS2512749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3011a5f0fe0b70d9b929b5c625de63f7f18275446888a25c9d8e0939293f836. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/TCAJR2512771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5de1311088f639e3648420954cc90abd021920410d29b4ae6dc80d1cff75efdd. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCAJR2512783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ea69b6a1fcc156daf20a23134985980978f1d433629995e60f1c7f60e8d7738. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:20:17Z), 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/TCAJR2512797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8788711decccc75f88bd4df38927076bdc796c6c3799c69bee05040ffcddbd03. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:43:04Z), 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/TCAJS2512808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x145cb7a053856a92b4b98cdd50317e9f0803bcc397719d84ea9de8ce1755ef34. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/TCAJR2512828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a4c64466d2bb2cf877e27114c9db9e7b9c3de7eccd3ba8cc0c221da48199d64. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:25:09Z), 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/TCAJR2512848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd64c5d124457222a78a9f142f8f73c57df6631f48ec766a90d4b2ef8439a025f. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/TCAJY2560008.