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 0x01fa11d6e911ef80535e1895818afde9283ad95486f3f63a95cb6d6a9305caa2. 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/8478e689-f34d-4709-8f1f-6a0590106901.json and https://artists.proofprofile.net/proofs/artist/8478e689-f34d-4709-8f1f-6a0590106901.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 0x25ac7a1280321ae20ba73f04954eaac0e1c504c98bca3cfb6e16656abc8713b1. 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/AUGBT2432948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fa0d0a28c5702a1032d954afaa4606142e8929e67e4b51fbab7e2fbe946772e. 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/AUMEV2472453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf05edb810fc238bbe186ca95d93f6c71b0c89359cef7ae030324f4c02bc5bdbf. 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/AUMEV2472515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad5c453e70484ac032f138577bf4c2f8abf6a9a338bc6bac9acbf23a658eb95d. 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/AUGBT2453707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99d71c88e34fb6b631119058ec7c02d43520031ef040e0c313cbb44a2776ed99. 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/AUGBT2413122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dd82e22effe8495c93af080db2b91d270503e0817ee8189bd558b4d9fdb7b19. 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/AUGBT2453709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25ac7a1280321ae20ba73f04954eaac0e1c504c98bca3cfb6e16656abc8713b1. 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/AUGBT2432948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf9afd9c7789902051ac1921bf3bf5b56b1eada4f612a50a2a1f1dfee80ee6b7. 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/AUGBT2451564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf728603d60d2a5971c10a9d5b2b8a4e9a947ef29a2338de28693532f62702295. 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/AUGBT2453714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e6fe3c1f087b9054452afee12c511776108d08232f32b10fabe9d7dd7c2f9d9. 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/AUGBT2453719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x985bef19c061fc3d465b87ed05c94e759752e1ffb0eb9162a80fde35e42036a6. 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/AUGBT2453722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04a28200e5642b9633952723f27c08da3e449bf0ec202684f7329ec0147fe77d. 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/QZMER2301133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4e49b144e689eab6c253076e89e3cbfdf85aa2dc071367fc273ba20d6e8be08. 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/AUGBT2360651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b726108c43535c5f1845715e7bdf89e686b41e20e183a879ed0802611283331. 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/QZFZ62314704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9a2484c7359c1272374cb091ebd658dd8c3b279dafc217178cd240e8039e2f6. 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/AUGBT2349665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ba5f42bfe330890c3f6b6b9cc451c95e0e5c5a83d4b4a5fcc57d9e697b8d438. 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/AUMEV2549363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a46f5eb812e68b0ef17ff30ba92a40e109398f2acf6a7a4815a4c91fcf6c5a5. 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/QZK6F2591903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeeb96d07468229a319357011452fe054744e88ef5b5ec3d576b3d442f7bafc2. 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/AUMEV2535475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaf307eb3af82c96837b69c6b3fb63c754173264eaf4e85ab358696698121cd6. 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/AUMEV2535482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x249002fcc797bf270e4a3fb6d4f4d003fd0d6e77e42970395331ea2c5650c440. 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/AUMEV2535484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d0a33b3b3e8f5a8171d54a9b567411bff73615dd3bcc65a2ab52e88fbcd5c29. 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/AUMEV2513351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cce5993e03974ffe45ca674038009f4582f1b9f72d0d6ffdbe5c4c19ca531e1. 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/AUMEV2512943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d8890e27a6d55b6ff02e8bd409e1c315e93efde4c033bdf00ad1e2765cd8e1e. 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/QZFZ62571478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2db9bb9ee7436e371f8ea3bec6ad8bbe0b9f79f18a6cbffe4b9cbafbc974943. 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/AUQ9D2400855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50024271351ec060860f7807bb620ef188c67feccdad8e905430b42c180bb8a3. 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/AUGBT2497376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39d594c8f07b2f104a48cbed2a21677b5b2990a4298caead4bc42bf1d63f2bbb. 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/AUGBT2486023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedb74befd4333ee6e3a7f7801f49d3ce2b10439f2fd10646588da83b120e8d49. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/SE6QE2490268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf9afd9c7789902051ac1921bf3bf5b56b1eada4f612a50a2a1f1dfee80ee6b7. 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/AUGBT2451564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80836c0754611255ed2dd7d842d50c34d8c4d42b77f16889a47fbaa8db8a1068. 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/QZWFL2451203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99d71c88e34fb6b631119058ec7c02d43520031ef040e0c313cbb44a2776ed99. 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/AUGBT2413122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c2a8f4bb368545652ef5c19defb704d2bf16e04977d24c63274834c4ffeb9f4. 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/AUGBT2409182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20a2cbfd60eeef10a267df486eff340969dc03c1591eacff6aa26e9cb3658f8b. 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/QZPEW2462077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ddec122fddaacbdbf8697bdc3f20432f7f90cf1dd740b0e35e87b687d48c284. 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/AUMEV2453501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8ac835b9cbc4a29a669033095c14a14ebbab8df89c733c1e68f84a4a909a70c. 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/AUMEV2453502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x063eb537f5a90ce158ad6561e33bbb09fd6c8d63931fd95fb0c1e60360d64774. 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/AUMEV2453503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c8291af7e5f2eb92ff188570201fefe707962d5b5362f7f4d02abde12171c6b. 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/AUMEV2453504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff2dfba0bcff836848557030e506fa77792f946afc5d9138ba3d4bc9a14c6c49. 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/AUMEV2435730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bc91d7263391d0b78f39987d4e07bb690554666f03194adad61c5ffe77644da. 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/QZES92482966.