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 0x5d53fd84a1c3e86b631f31f0f1163c6e9359eea998d958c0d51ba83dc20758f5. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9aca47c2-f957-4d50-9c7b-503eecc8ad44.json and https://artists.proofprofile.net/proofs/artist/9aca47c2-f957-4d50-9c7b-503eecc8ad44.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 0x6050d47e6a29894c5b77d85de7207732b26b914e1acd48a9fe479f02bba31124. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/JPS800891805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed92778710bcd7cf162b818a5992998aa0918528719ba7c60621890c4b2c0f4e. 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/JPS800891807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dd1665778447ea97b0886fc9560fed3a60291cf6fc7428fb0ac1b376dcb4f66. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:18:31Z), 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/JPS800891808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76df7be2a26345eabba4d25a6f163807494738bf3b3f17619d5f3531c008a731. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:43:54Z), 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/JPS800891809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd04d5b8176c76ca745c7e22c5afb3a643845d68db0b4cfa558f254dcf0dc728. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/JPS800891811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f375b6301b0b18a75f1c5406320d19eed67c1126c791fd25068f2d3e1466854. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:07:43Z), 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/JPF671200134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fe4eb73bdb636cdb0b83a5d6592aee4962cd18709eff1b35539a82e6abc1dea. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/JPF671200136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd5a74eefd7ee5e62be556dccb0507747ebae36e7456bde0078d6cb61a48d2e3. 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/JPJ901902630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b46c58bbad039e867034cf00e6432b55642dbac3b11142581b31e1d26b5fdc9. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/JPJ901809250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d8ac8ae2aaf74f774bb64b3723f6dc261520c212140c334a7a89776a0141014. 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/JPJ901902640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6af9a5dcce5afceb48febb4a2594e73f43230766a6f724649fab9cf8c1578aa. 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/JPJ901902650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60cdee4d591809a7276d424eeb01ea3f71d288d099e934ee52162214c0c38e12. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/JPJ901813950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ba4c8162d1ba2f2bb7328054e8af0d3ebc2859d3709f51a992187ba46f75bd2. 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/JPJ901902670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4be5b8f95ddb19c5751e0910284b0a876bb37864d7cea59ff2e2c7c6fcdb99d5. 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/JPJ901902680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ff217770cc1550c1e9ab6338d642e653738576c4b91049abd7a56963dd34758. 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/JPJ901902700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd0e8b09c8b501c203407344ab5222bb1da18d2fa80ea0dba8dbab9dac2818d0. 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/JPJ901902720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae4b750110d6c2d662dbe345512dcbd64ce4b99c202cb0413ff2385f319141bb. 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/JPJ901902730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb04354db79fab02e39a2331e62372afb9b49598e93ddf47e5a6ae769e05296fa. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPJ901902740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x461450ee5fb84c5764fb0e842cdbcc83211bddfe724e972c2ae843ac8718f19f. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/JPJ901905900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f114791608d855bbe3e12ff93c29ac88c3255602a20fd016c9bb0184df0ed94. 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/JPJ901912040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe785760c3482c319c5ba34a9b25afb4d52692f7d3b81d95c8b1466736c430331. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/JPJ902110190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcb7f19e17a4c4a220faec8d85e0d2afbf9af1a15bbaef7c4361bea01cfe3fd9. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/JPS801955853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x819ef9b037d62f02ff920308aa21ccaa7bb1e3d571de3e9c7c9fc8bf63236bfd. 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/JPS801957440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64879275b195099ac091b88c78deee270f558a972bfb681cda7667fd632000c3. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), 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/JPS802350634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cd4b3281e36a4a0d985e336f2678b09bc5d4358fb444078ac30bbd5258527bf. 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/JPS802351538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3c4b7df631c27c372247485881c1b81aa584d91cb49d08f54369bc9345c47a1. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/JPS802351540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd45cc8848143ebfad993fa43a6ffc653b9c9a560c4e0376b433161d0d749bd77. 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/JPS802351542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb03f2ec77b72e6a87db9a4f0ad887c4860f428e41e8e726e367511e8595fce05. 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/JPS802356753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x968ac15c975e444456bd960c9d559caef5d62cf968963bdb93b5e2d2945c21eb. Chain 2 (Bitcoin): anchored in block 958889 (2026-07-20T16:05:15Z), 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/JPS802356755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8977e3d5226cbfd383bab493bf64e25adc7f5df8c92f9edd6059f42c68d42d74. Chain 2 (Bitcoin): anchored in block 958828 (2026-07-20T08:03:49Z), 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/JPS802356761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2200180d04d01c7d061044c4b48bb7d6fce0794173b43d2af4f9e5cc844f4e6. 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/JPJ902104010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9006a142fc695ef3270120ac6185d6c3d11d4238fa5c481ccfc2ea77579757a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCJPM2042357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea7b492a3cd5c63da82352b1c64901f6a85e974ce174c4cc9e35143ab77af2b5. 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/JPM591001083.