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 0x76aed56b9d267a56655fde15671220f3715753124bcca16cfd9e34d9a2c64a19. Chain 2 (Bitcoin): anchored in block 953592 (2026-06-14T05:36:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/07bc4959-b64d-467e-8f95-5d2303b9135c.json and https://artists.proofprofile.net/proofs/artist/07bc4959-b64d-467e-8f95-5d2303b9135c.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 0x83851ec673919588713d9355a0dfea39303be1d722d618179085e1e59baedc83. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TWIO32100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86b8df4d17fd4e1601c24175a9629d3f0abbd6bf54b7b80b257183570d2a110c. 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/TWIO32100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0b96e9fac3be3dd6df58c70ad8fe976ab5819a3eaada15dbad0e78acdaae551. 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/TWIO32100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc272f06d759f734c3604e0e4f206f559e8de5243b03a85e126eca0d42ae49b54. 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/TWIO32100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa99639ef9863eedddf4cf5f5af9a41011b2176d82b33a574450de9aabff6cad. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TWIO32100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c4c2cfad9ad0213c7b6cdfc13075ee87ed0831592a0b19a3d5e94521d8c6c47. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TWCC32103859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70b87c60a644b914ebe63eb5e7f861fadb5ef4743c0932dbbb9202402ad3cd5f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TWCC32100732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x124811d959b40d3175aa4773b279dec5157f8bf86cfc6adca7a3293352b540bd. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/TWIO32100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbe597da3930962fe39b963183bce538421ca31798729bb03639fcc8a0300493. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TWCC32305445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc244acd9224067547532225739ab53a539cbdd36571f575ee5b2db96334cb828. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/TWCC32303378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8ddbbefe04a2c2ec433bc453b7ad54c6c821b202b52a70fe6438e064986d25a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TWCC32209330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52066f052bd85b753cf3923b920171d7cc642fa2b4df9288e646d744f26007f7. 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/TWCC32206329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47280b05300500e5783c0fb8c0bc7518beb3061836df3509dd42cdad6ad429a5. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TWCC32120996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd47b06976cb7659258cf891e8bb5e218f1ba0782341fd6dd78efd8f7a7a58f6c. 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/TWCC32105542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c4c2cfad9ad0213c7b6cdfc13075ee87ed0831592a0b19a3d5e94521d8c6c47. 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/TWCC32103859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70b87c60a644b914ebe63eb5e7f861fadb5ef4743c0932dbbb9202402ad3cd5f. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/TWCC32100732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bd43566af76659787082c8e47d709efb8c89c9470e4c43d9c4fba0a40af2c96. 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/TWCC32311154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1811dce488639412b6148596f34f7719fc5066a602ef57e91287329a2d3d822. 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/TWCC32311430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfd7ceeaca42f0e1eba5f1870486258e18d7170f55886747238fe59a3c6a07ce. 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/TWCC32311083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13cda60ba4cdddca1ae00c6b1e29ef8ab43343b1f8cbb46b06fa00fdf9a8a787. 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/TWCC32311431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b0465251fad1d1ff93b165033d4932d49af4834a23df0fbf721988847b5cec3. 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/TWCC32319632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aad00bad76ccfe2a4292c206f3545c6ba957076aa9ac1adb8b37019dd78696d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TWCC32320136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9f934ba28d2d6423376b8068cd93b168eb32ecc1e8d9d8afe25e4e1bbe3eeb8. 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/TWCC32320008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41574371892e7addfec94ed5e96401511fc32ea19904099052decc5ec1e16a84. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TWCC32319235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x823802a6cd549f1aed3c128b2d4af228ffd3d522812d9ef1870cf145baac541a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TWCC32320469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53e1714c9113f6eb0b1b72355e2e42e389f88aa2d06334b5bfadb5b1aeccdef8. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TWCC32318672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1a891f0dc0126974ebc7c8658457deee50f1477203cdb327b3f2d05e5388453. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TWCC32321549.