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 0x71a0b94fa9f093c6ee95444cb19964cb2b813c837d2bd88a96e7906b199b950f. 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/b0a9a20c-baa4-4769-82d6-db778a9d46c2.json and https://artists.proofprofile.net/proofs/artist/b0a9a20c-baa4-4769-82d6-db778a9d46c2.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 0x0a1723637bc7be13a55fd6ea3f9f3d955df4b39a511242942430c274e46a2c4a. 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/JPP302200241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab41bf1a4ed83053b4cf44ec56a2634b1263dd2258d393b58c017fc807e6cfe8. 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/JPP302300585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45677e32c862886c7df25349b28ba0cbc76a6f7510b0717ab98013eb3dc1c9dd. 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/JPP302300343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a1723637bc7be13a55fd6ea3f9f3d955df4b39a511242942430c274e46a2c4a. 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/JPP302200241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ae95fe0bb12b56d502ea1b63218ecb4c28fff77c415eb16bee02c6a6becfc56. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/JPP302300586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83e096f3501a0640994b44a5eb9d8de6d5f7532ca1e1e9aed44bf041bc6e849e. 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/JPP302101954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd39aa65941636617beff0f16d96f8aca798eb59ee411491fa15253ca1e489a0d. 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/JPP302300448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78e77581c1f0ccaba3a4dd1279ccc376affb5cb427b7add38b1ca0f77950eb35. 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/JPP302300587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe981be16a8a938d73d31102c07cc06c83c7eb993327c76a6b28c1d52ad32f5c0. 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/JPP302200777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2927a4bcaa26ac54a60e38e82bdc52a9130f4f6fc51c8507aefcf118c6af107c. 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/JPP302300588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aada54e04ce04a1192ef26d9ef91c7ee6dbf29a8af416b0d8c97b1710209d8e. 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/JPP302400738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x804c4dca416dfc6a5e8da6c522e596b12262fcbdfcdbad84be1819ffca69c72a. 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/JPP302400469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa862d9d472666f663907a9038c320dc6a7e4569d15bb1e5facc6bcbf39e18088. 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/JPP302400347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab41bf1a4ed83053b4cf44ec56a2634b1263dd2258d393b58c017fc807e6cfe8. 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/JPP302300585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd39aa65941636617beff0f16d96f8aca798eb59ee411491fa15253ca1e489a0d. 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/JPP302300448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45677e32c862886c7df25349b28ba0cbc76a6f7510b0717ab98013eb3dc1c9dd. 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/JPP302300343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe981be16a8a938d73d31102c07cc06c83c7eb993327c76a6b28c1d52ad32f5c0. 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/JPP302200777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83e096f3501a0640994b44a5eb9d8de6d5f7532ca1e1e9aed44bf041bc6e849e. 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/JPP302101954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddc3c604862ecdeea78ca40d690e16a5d5802eb0dc4c72e660dc791971d2b3b5. 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/JPP302100893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7a03eaab20370b19523fc899909d0557d44bfc53a834f607c8a33b99539aa48. 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/JPP302100894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x492fdee1abc1fee8785f748818aa8e091ac0c2284b563dc858862f7d9f0b6259. 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/JPP302100895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3d86f12bd276a8c34110af875b6d8e53cd472b2253476751d04ec4d50965e1d. 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/JPS801946140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc99596b4ded9704cfca49e26ce65d6c82c7b6da065cc8bd1164cdbcf6c29a5e5. 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/JPS801854101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefa90359b72ebef6edcc46bde1e32d4774415f2e9114a70519f780da2b5b56d4. 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/JPS801854102.