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 0x36bbcd98d7ec9b8c93f43283ee753cd651b575e201e59fa317d715623115389f. 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/167af7e3-4548-43ab-bbea-fa9c256a68d1.json and https://artists.proofprofile.net/proofs/artist/167af7e3-4548-43ab-bbea-fa9c256a68d1.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 0xed597ca8204b5c4bfdcc2a61a9be1e33084efa5b42a354a8246610c2e267ba12. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/TCAIZ2463346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27bc54293c9470b21460a95262f76323fc201e93422ad43c4d5af2c5a4cd4dc5. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:36:00Z), 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/TCAJA2420935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a69fb6beb65551ee40797583757c2edb190d128f762989b2fe9a3af9938922d. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/TCAJA2448684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9836fd0c1225dec8b518c84960e3caa8c5b5b9a88f988c7f6e2d17c21527ea3b. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/TCAJA2456922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72b5a7d6a726ddb4184a15e8df0767a33d9ab7349d87468fa532695ccbfa4d36. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/TCAJA2469603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf581b4a10ce6557c5ab7f324effecfbc9db470037719c5957c013f3845848150. 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/TCAJA2494251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd36072af8e5fa7905a503f26cb38319aa51e9675d9348515cc64eecd91fa835a. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/TCAJB2402466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a6f1e8941c1175c3888c6cc4101ed73f3f217a4c3a791204973efd2a7988dc2. 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/TCAJB2414976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d3d52c41aceb09212e7abdb6f734626f2ca8539f7ab86277633298b78fb021d. 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/TCAJC2431872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17d38bf0c4e20e2e8eaa024a87039995bf2622a96b960cc204721c982124285b. 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/TCAJC2441286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc8a531576596dbbdb2be7cbb9bd7ce0614bea52af2ee731ced9acfbe28bd518. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/TCAJC2417022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa392d7c4f7449bc7ae3790db17c96711eea936e8dc51d043c0b35409f8dd8a29. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:57:29Z), 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/TCAJD2417095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaf44142976395498cdcc5f1ba62eebab846031efa4512e61fb624c3df3e1c93. 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/TCAJD2417072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa60a3012670b3ccae6ff79b167f76d4b45f5996598bc45b35874e1e81677847. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/TCAJC2417058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76796c6d1d9c4739e733b5ca0274c05a4d42e39d8c6ffc705c67de728b257fe8. 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/TCAJC2484691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab3ba6309b2c8517ed19a9f71f7fa72b6d6738522240219cb71db0fae1ba2a30. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:43:39Z), 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/TCAJC2484699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fb76e3fbb64a32514ed1c7781e60fc2b2b87731e3a7c581e188af79683192b8. 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/TCAJC2484692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d83fcd1a94a2a7f6fe51ff75a6012745d393623eee8ac4fac113d0fe55c3dbf. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:26:26Z), 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/TCAJC2484704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfc89901f80b560b42c08321a15fa8f353951d395a9356ebce460e3ea5e8d1b0. 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/TCAJD2440773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa972d01532d85e2eee2338be2d9d4d4ae9e7816f9575bb5052f95fc14e24dce2. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:11:36Z), 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/TCAJE2449294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa396e0c3ac3d76611f6e2cf3d7318e61232e9ee6e4c31fd199a63808a5012f61. 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/TCAJE2508080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00900bd0fe59f063b0faee036da7265e38b10e3caed0c5634dc3b4470b082022. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:32:51Z), 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/TCAJE2508000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90d5e55898c90e69cbe17162629ee19f95faf9fe2766407500b20734188f1148. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/TCAJE2555023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36b05441af2f040c2167e001618ede9c563b1946ba0f475a9a451a1d7cf0b5f8. 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/TCAJE2555002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41682d51f6fb1c8d9f1f719695c89434ef3caae982be12aa20e899d2024bba88. 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/TCAJE2555230.