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 0xd47d265cba30dde8edc86fdda447c3f95d816030bb5a5f458578377eb47b8a2b. 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/b5d031c1-9bb6-4ce8-abf8-73819538dfff.json and https://artists.proofprofile.net/proofs/artist/b5d031c1-9bb6-4ce8-abf8-73819538dfff.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 0x712889679dd103835c0a2677f6259bff27290778e99a9f4d30f7efd30e21e12e. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/TCAHC2305315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf13df6c1c7e0246441dfd956aebb6e597d5219ea6b130d561a0fa477788ab45. 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/TCAHO2309862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd88683981ccdf5badc48beb72ef7b92843327ba405c22a3f27ff713be77c574c. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/TCAIA2422508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf221617f726a2cacb3e3e1de6238c8ac0df9feb74ffb5c1353065586b6f58a83. 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/TCAIC2434490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe350e9683360092e322b34e04ba241e2590cdf732e582a0f9bc6e88980db55a7. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TCAIF2423721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10e6fccd0024fa50a55366ee504fce9c822c171f0fcc58442651a875fcd557da. 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/TCAIJ2448413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ce042fc7c9ee52b893b66bdd71acad9cb48cdcde2ab15d73af4be3260a7e546. 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/TCAIL2448599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a0a05579472676a2989a437dd116b929593f37b09af07afc95b00ad0a6c4712. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/TCAIJ2448801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67374eb0b6a0cef41cd4884b2b51b72fddf35473f8f1bd148c40b35860e75d6e. 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/TCAIP2478044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4683e2fdbc0cf6210d714f67429561164f27a3c2c445b567944d4d7f8496751. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TCAIT2439617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x169a5a384ecf2e37eb173e6c0c4ce58c7bb44b935e2bdb4d69fe4b977dc504fb. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T10:57:48Z), 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/TCAJA2415030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf69877c6a48822cafdcfe65bb846cca4be2fa22a4df05345ebcf510bb3355ae9. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TCAJA2415060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c563277e43a158e16b4c9ea57daff22b03c4424b4eeed3c090ac4cded4404ea. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/TCAJA2415266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2ea9ee65581310c6d4272ed6481329250336edc4d5ea5f9167726d049cffb9e. 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/TCAJA2415340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2caa1a526ab243709154589d0ed4b0e206200c3228c02937fc00d90e4fcf2af4. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:36:37Z), 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/TCAJA2415458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb23429ed5005f7427e2c87c5a527a0ac3d062f53c45e4eff2748892b3589b29e. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:34:18Z), 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/TCAJG2511982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x060636a7c2efe6856fd809749157923dfffee0a3f40bcea842946d3584bf6021. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T19:01:50Z), 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/TCAJH2512025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe97a23b9f6e13ee97c24a4cc428db6d3833c22c810e03ce59dd32d3bd8d27a41. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T19:03:48Z), 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/TCAJG2512039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85d25b4e7c9f46e595e164c3ab8ed990352232390c9ca0a9692b1e2e3ca9d818. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/TCAJG2512062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa00628e5bc76dce1dfedc9f6c1f35bdad15b215fe95e0e147b4a3b393e4f0f10. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/TCAJI2590534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3175c92ec1fff19bd32bd4f01f1174795c4040cd7aec6161084b1075a4e4b7fd. 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/TCAJI2590375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aacfb4f9b58c65af7704ddaef7ee1504f280597e502387c91b1210257fdaf3d. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/TCAJO2595683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13db13fc6f344eeb3f7b1acf8c19c15c04a6d319d01f79b08753c41b7d00ccd6. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/TCAJW2557577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x858d6dd62623b922d1939ab36edf7042a2ce7a03fb9c4dcfd11c0a213b9569c1. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TCAJX2580637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71b063a6a039e4e1b344f305dc5789e9b706891697bb1fa1d5d43b7f00196066. 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/TCAJZ2559203.