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 0xc11a4d3ca7b60686a2ba8aa96798c7206cc72cfaeac0a839c1936fc8feebdc12. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/54893831-d394-4ebf-9028-8b2e0b79bbf4.json and https://artists.proofprofile.net/proofs/artist/54893831-d394-4ebf-9028-8b2e0b79bbf4.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 0xfe1eb4922bc619fb0b9863948ea13ef12987f30104c99914b7d5709f3b2ea630. 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/AUBEC2047654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff3eb5444353e16b26c904bdb5ec960ec702736e89647dc7cd3db43bf9aca5cf. 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/AUBEC2047667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd912d4b67f6d548fb62c192bb4bbdd801216602e73dfbafb4beb9119dd76aff. 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/AUBEC2047655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a8624d4eae02ce717c90f9406e2109cb292a8f002c64e4897db4347bc671df5. 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/AUBEC2047656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x313465a38cbcb2a7affe587c4a21604f1a2429b31d54a02164cef9b8c4cbd421. 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/QZES72059169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2188ca095cc4555e0502b675cce313076ff3e2386ec4bf01dc40f03b3c1706fc. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZGWX2045162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf703ab1a40b0847968d13d0b12143202cd1d38b950f7f2bbc6cf0219cccd9856. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZGWX2045163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf62641214e3e82182d27a826cb1ca370c6e228debf5e74509eeca15958786fe2. 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/QZGWX2045164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f7160d2ac904940a0b5699cc3ef0bcc591fef86ceb2fbd6347518089c3a5b2f. 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/QZGWX2045165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5b979548b1305b6a33306be725c6de71d6b4879f162b0d2129903c1ffe50890. 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/QZGWX2045170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6a2995a516cae70b847e6851c82fedf97b0dda01501f9a77fb965d4c759107a. 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/SE5BU1888236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0ef14e29d970b98285be61ee2eb913fc02ae6c3e582464dd4bb3cac2c7aed0d. 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/SE5BU1888239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c8481038eed197c01e0df4cf7f311dae68f52041922e09419e9c27a96a1ecc9. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/NZPB12303942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcc80c603e02f647f663b3b368dba08f8f41a65e9a399b41f092e2af03dee197. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/NZPB12303943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe375c53c334e28c88838105bd6e88dcea541b3566da300151a88363ef87bbcb5. 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/NZPB12303945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde0e0ec2be9f37ddee71f684c6052194b45ce685ca0d69dae0e66f377cf11f6d. 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/NZPB12303947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x342f28a5a1428773678db15501ef71995b77cddc5e19ced898526ff7ea3bcbdf. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/NZPB12303949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x153cdd712e241372273eda29d36502ba8a35bb0602241ac466a6d955b274c729. 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/NZPB12303952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb968b538ed47e21e6d59ef4f7af5cc9f895e6803986dd23d307ac550acd1e8e. 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/NZPB12303955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51003860ea761e155bb1ff61f7a9261fdb06275f2ab7eb53297a9d4af19a5dcd. 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/NZPB12400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc77731d609b969c8afffc3e6648d78ee34b03792003a3902e8d7027f68a9b93. 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/QZGWX2055467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0ff281303b718dfa9eab07eef04b21e12510155371a82f20690a4b9d0d37d1f. 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/QZGWX2055471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b4ad002b601aeeec4ad28f6d3f0582fcaa6261fdbe271e4998a8c97c6a46635. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZGWX2055469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bf04bc81e3b162ef49418000ef147ea52dbd3796e6dfc3109e97b35c0801b4f. 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/QZK6Q1978376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3de5ebc972a0cdc490ed801d13cf1d65e6fbd2655ec540af8a15337c0c9585de. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/QZK6Q1978378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0a5831c9ad1540ccda78fd4ffa24a51919e79243535eaad28e18bc294954635. 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/QZTAZ2291995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ecd5e56a9101d44b5892b2608832995d6db160d923f9e3243eec9ba895eb77c. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZES52083637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bfb05b49cd596ca59911b2af497da2a3bb89128977fdb301e034139e0b0fac7. 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/QZES52083638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ee0e93ce59f0f2d572b50649638854acc982f4a776cd6f20dd35d5b4119570d. 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/QZFYY1904881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bfac44c3b665388a8b74a78b4db9f7921a623b76e8d70b18f24135066de0331. 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/QZES91976411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa050ac959a9d4eefd368451cc79123fece03775ff347098d428ee355b91263aa. 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/SE5751846854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc11120e383ac86ab7c034e367dc59e9a99cfcb6369d5622323d4602d5ce4efcc. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/SE5BU1843747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15380abd3c1aaa74dab56ad4deb02a613caa9c1f55f25a442ecb7280478a48c5. 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/GBWUL2450078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x846432d0bcb109f376f3cdef940724134828cbcbcdf4cf94e2d29fbf3c921cec. 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/NZPB12402917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe1eb4922bc619fb0b9863948ea13ef12987f30104c99914b7d5709f3b2ea630. 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/AUBEC2047654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff3eb5444353e16b26c904bdb5ec960ec702736e89647dc7cd3db43bf9aca5cf. 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/AUBEC2047667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a8624d4eae02ce717c90f9406e2109cb292a8f002c64e4897db4347bc671df5. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/AUBEC2047656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x313465a38cbcb2a7affe587c4a21604f1a2429b31d54a02164cef9b8c4cbd421. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZES72059169.