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 0xa42a7fa205baa5e85df674d48eb2ae6ba2a1935659780a4f02d45cc1c55c0ddb. 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/e698a2b4-92fe-440f-b354-2f41e61d892e.json and https://artists.proofprofile.net/proofs/artist/e698a2b4-92fe-440f-b354-2f41e61d892e.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 0x269b3f24b58695b2e6c3f177bbe71335cb3db858ce194117d5df197fadbf13d7. 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/TCJPF1739601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4a46eb69630264c7b662d1769815d8f262ba71af661043076639d95cad1dd45. 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/TCJPF1739603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2d6f5ada77e14aeae3165cdd3353f6dbe581eb4a15e1cd6bf13e1c90668fe08. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/TCJPI1967399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a4c0feb5b92c2689d781e7f28b3c8c61c0846ac30d78b12e41e333d43859f74. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T06:56:08Z), 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/TCJPI1967400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a426e11aa94eabc5a231df88ec491d65b7f2ef247651121ac5f7b960f4359fe. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T20:06:32Z), 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/TCJPI1967403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5efa0816e468903861b7959370720d6402d20c1c85b2c48a27f48d6f12a5c64a. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/TCJPO2199500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82fe9ae85d826863b6701c7dcab3d2a348326ecd939cb816d89a323b2628fbcd. 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/TCJPR2266592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe893eaf66919e9de3265589e59ca4325496760181cc132f1a82a7ef8485c3a9f. 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/TCJPS2236626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9733f391382232da5ab5a52e0a9aba13e750b387184c2af5eb86a0fc94d3cc3. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:18:11Z), 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/TCJPW2372639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd989d5c8a2c9d5da4230214a70a365c788913a0612708f0cf89d378c0ae20c3b. 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/TCJPW2372688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x131c3449dd6605c472c1ed512e5159a63afdc2c7c3c4a758e5c7e20fa3b05d47. 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/TCJPW2373301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93a27aa891a5ca34139a5ecbbd35db41aec077b2ae1c22221b8f4e8ea83bcf3e. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCJPA2430168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38208bafee4052511f8dfb3207df6c2a4ad96413a8b82b6efff48927908e8c94. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:43:42Z), 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/TCJPA2473386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dd33e2a87c62a4c9afbd902e35c6fde7afa01f22143fb1731f3f89ba04b36e8. 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/TCJPA2479219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x476bd1e019b5fd03a3751d71d42a809c480f298b535ad37a6855aa653f0fe0f4. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/TCJPC2407114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x030b6c375e68f9f6b7c1a2a0a0ba7fdb1bc8342b651dd930b2e96e97e9ce47ec. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:57:52Z), 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/TCJPD2568331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe146e707055d70f171692d4b7fe20b4a84db73902d2a25ff2f3d911c46f78089. 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/TCJPE2537030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x030b6c375e68f9f6b7c1a2a0a0ba7fdb1bc8342b651dd930b2e96e97e9ce47ec. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:51:26Z), 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/TCJPD2568331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38208bafee4052511f8dfb3207df6c2a4ad96413a8b82b6efff48927908e8c94. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T14:59:39Z), 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/TCJPA2473386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fb905c3d01234c66ee7bc788006057d5c97d0e21002ec12e1b25fd5260ab925. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T10:49:14Z), 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/TCJPI2545491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafdec5b5102e861f9f1668042ecf41671d8af7b54eeece341e46bdfbabc7daab. 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/QT66K2537559.