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 0xeaebd0c8f428ccbd05dbb7fd959ad632fc188bd0b031173fc247c2366b8211ca. 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/a1b67d70-bcdb-4219-936b-449fe9a1a77d.json and https://artists.proofprofile.net/proofs/artist/a1b67d70-bcdb-4219-936b-449fe9a1a77d.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 0x36ac58244207565837471003886c07ba04d56d5efe55d6bbb64138a493637fda. 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/USCGH1068969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68959001f3c7397a06accd3773364b9d5da05bd8db3e77d6f36f70b36d7673f2. Chain 2 (Bitcoin): anchored in block 957587 (2026-07-11T16:48:26Z), 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/QZ22B1939061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceeea33d44b3ed4c5502d764502597d3477654083e1c74e154bc380219f93bc5. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QZ22B1939063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f55bf0d1d5fd432e792f3888e89e5fe5b156ac69543a7725bb3dab909b7907e. 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/QZ22B1939073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68959001f3c7397a06accd3773364b9d5da05bd8db3e77d6f36f70b36d7673f2. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZ22B1939061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72a06217335d4343d647da09a65ee5651e9fc58a64eacab3f80e933416ff4f56. Chain 2 (Bitcoin): anchored in block 957579 (2026-07-11T14:35:38Z), 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/TCAJH2524648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3a81fb1a8b706e3e5bf73341d19350a8c3ebec8f21b93905656e1872f5544a5. Chain 2 (Bitcoin): anchored in block 957576 (2026-07-11T14:19:48Z), 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/TCAJH2524654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4813f252a1658a3f2ff3914fd666511929e0cb1f2bcf3d31d08ec4075e606aa0. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/TCAJH2524660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbf432fe0b4a84df5b35aad705ce82acb97e8b7badb78b9961ac4ef424c83cc2. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/TCAJH2524665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x438ff9d272c9b241d300141ae5d9d132fdc9204123cf53cb962c822259379f90. Chain 2 (Bitcoin): anchored in block 957583 (2026-07-11T15:53:17Z), 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/TCAJH2524666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x950ec3a74b54ea3eedb79d28d8df5af0b85b5f776f0d934f47423c3a687d71fc. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/TCAJH2524669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fcd90e67f8fcd750d2200f8f6e77bbd701b9fc74a0a035b66124eb7bb633052. Chain 2 (Bitcoin): anchored in block 957576 (2026-07-11T14:19:48Z), 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/TCAJH2524671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dba3f27c81141106c66f45129844b3ce9e38cc4bb6ddfcdf7b0170dba99be62. Chain 2 (Bitcoin): anchored in block 957587 (2026-07-11T16:48:26Z), 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/TCAJH2524673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea0a89d8e9c54e449980a94f17c9208fabc1c35bb209d2a4256c5314c475269d. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/TCAJH2524677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc0f1a23c5ea8656f898d4356a3eb230f59bd084533d7c126a2355a08bbf4c7b. Chain 2 (Bitcoin): anchored in block 957583 (2026-07-11T15:53:17Z), 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/TCAJH2524681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c85113b0540c1c34c8b565065fe9ae5dfa9a6e4762b3fad7940bce34cdf92fe. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/TCAJH2524686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ea205cebd592e3bf8e905ae8193ce9072774332674b1ad235df63b7453cfd7a. Chain 2 (Bitcoin): anchored in block 957587 (2026-07-11T16:48:26Z), 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/TCAJH2524691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3097f15b4eef962acbf7148151ea76ad94d07acad03f41bcc16726491b4e6f8d. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/TCAJH2524693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x925a32accb90ebb8e9c287d7d510838ddd326cf647d85d1542a14a10c193ab0c. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/TCAJH2524695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d11b4500d5d2e7d69bd9b96365f47bc64e3830feaae83e18afec782224a0263. Chain 2 (Bitcoin): anchored in block 957579 (2026-07-11T14:35:38Z), 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/TCAJH2524697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fd4359e7f07c27ed8b4d874fd44af5d1c78e7ff7ee0a6ac1254cf5fcfeeab03. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/TCAJH2524699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37984d137354dd03c0894c1d4d4a72207bb61a7253b16a53e4f0141c2d2f2412. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/TCAJH2524701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba5c95ac0451d9992b9aa9fce6876373701ffbb2f93be633fd9590ec81960575. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/TCAJH2524704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54f50d3869a29ad63f2ac5d8532cba80c1be2570814a58f9fe4853a5c6960464. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/TCAJH2524709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd71574622088e5829d197f02171c7969e0f7131b545f1a172f035f7995f71f54. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/TCAJH2524711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f55bf0d1d5fd432e792f3888e89e5fe5b156ac69543a7725bb3dab909b7907e. 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/QZ22B1939073.