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 0x86eb20d9d1927405c7e16dd09bfb32005956c06b94ab3478aadd906aa917cfda. 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/5be943ec-fa62-46a7-96ac-9fed1b54ee1e.json and https://artists.proofprofile.net/proofs/artist/5be943ec-fa62-46a7-96ac-9fed1b54ee1e.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 0x56819699b2b99b533da1a134e514004235f5e6079f94a7465f56f041448b2b9d. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/GBSMU1763232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18b9436b7675c1abd8be0c69317722054f5cbe9d394f5a8fca3469a92cb282f2. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:51:24Z), 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/GBSMU1763233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9376d8e68fcc1894f57024ceefde19bef2d42e51e767fa8955a7344793a76416. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:26:35Z), 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/GBSMU1763194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4dc4809533dae4a6d325116f3fb038be7372e9cd06f0f3b5bfbb7870054b236. 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/GBSMU1763197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95ee47315ad9d9902c1f8a06d5367df1aabc5a6adaa83a9e35e5265988e88efe. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/CA5KR1567072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x865af4dada00dc1cad34c0b1169c643abd3ede3fdcb3e255aae4cbeb497c4de4. 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/GBSMU1938407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6963d104d1b82e5488d8cce2f3ca283c39797d9172086ed6450919ef64eaea9d. 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/GBSMU2425611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabe1f57b49c21fb6fc30c91161b621644013d8a31c8ca0d979a034b0a8a6b01a. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/CA5KR1702383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8feffa869be647e445b53fa99a38d2252a4bedb58a53c277e7e964c2e9253835. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/CA5KR1712537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x390aab0bebf2f16f06d2ca28c6605d7a9c9ca9c878770ab74bb3ff26beea3e72. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:38:28Z), 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/CA5KR1712538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4e77911e9e0151923b09de0778b420252fb8e6e7c8d7c4546713fd8f2849b29. 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/CA5KR1712539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef49822acd674bd8c4e0388f38108ce4d12e544cdeebad54a65d71991214384e. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/CA5KR1712540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a8e38572edec088bafeab7fbe01d55b7ae3304f842687a8f4df8f2d7a1fd96f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/CA5KR1712541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a82596f6cee93495e82b2ed89c4176c4dc81b3daf4a86009ca4d2389c4bb718. 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/CA5KR1712543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ce1fe328fe003845ac2fa1f391c08fa79ef3aae025afb47c32374730bc2a096. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/CA5KR1717406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3607a03a9eb03df9c2363651f47ee5e73f470cc58b5d7d2df0165b00dd57a897. 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/CA5KR1717409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2db096e393dfd9d472cee98077f52be26300576117259497399a29789410f213. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:45:15Z), 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/CA5KR1717410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8387bb7f6b43916b20a106c739b7d36fd86362e154d3bd753d9ff9662a84f77f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/CA5KR1717411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a5ac89c4b93b6662991efe514c7ca3988033ed6944035ebc5223ad94b37f16b. 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/CA5KR1717412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fb264d14410c415e6d7b99e3a1d617961091fe109adb825411b0d45e7c045ba. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/CA5KR1717415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe19084d974b7f33c81ac891cbfb8da614d9c130a24e3dc16a337b2ee3eac20e9. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/CA5KR1717418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda83166659be7d0256f007e4ad504d16f681a58ab07e7c9e9d4bea34315db1fc. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:25:46Z), 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/CA5KR1904556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b9a672f8930445d6a50021f7e4b4efe277388f5e82abda4ada1c747f48f9de4. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), 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/CA5KR1904557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf787df78c84c4b1644ece9dab6584fca1a3182364b6f40fe24d683dbd4b26e16. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/CA5KR1904558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb610873dcbd8c4d6bb0bd5baf44b01b9872fd850514622bd9fe6ed5d00ab5b51. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:05:33Z), 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/CA5KR1904559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1253c1085463f900e8c3e196e7ea3f873adca080069ddab3e2133a0dd3c939b. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/CA5KR1904560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01cf06ac5172b7359d84c5f347275e6596a762832ca37aaa544b9898c1b4761d. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:38:41Z), 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/CA5KR1959755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec8b64659f164e66d8287defe6fe38a1e23479bdf0a7dd18489f2668537f7959. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/CA5KR1959757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29bff182038365f103b9ecf320e8fb61df9a589bc9001cce6f152a16bbd89d5f. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/CA5KR1959758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dba13e6e4e32e5d99158626b1759b72e4155919e1f4f7a73db74330c9bf209c. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/CA5KR2114021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda3cb6d8cc1a4056eddf85e9a6a17544516363013fdf5a6a4f94023e8614dc70. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/CA5KR2227705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c62f5c3706823c0983cdfda42eac7539e0d98a406bd20b6c6edf79563d3bb98. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZMEP2226047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x175121b83233d1fd051755b199c68cc6573a82b899a22d2aa0113733eaf6bbee. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZNWS2280948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a940f3fba741ccb43fac4e893341ad10294d382d448f47eda8ac75af1ad0d98. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T02:24:27Z), 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/QZNWW2288099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d85efed869151434bf3e0bb3240816b86a145068e6a130f5c9b703417579f53. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/CA5KR2309613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd11a167719279911c36b559e911d9e5b45ce15681a566329dd8b5ebaee9c0bd3. 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/CA5KR2309615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdae8b76d504985d0a358e815d2b56bb05631cc3cd5ba4a8f929fcea90306f2d2. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T19:56:16Z), 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/QZFZ62331120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe5e98749778042180ee128d84a151908289db80187d13e6b20fe2e60da532e8. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/QZES62351237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01ea9162156664e96c389713f71ae80f0da0c756e5433fb07a221a544bcd3d24. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-02T21:02:00Z), 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/QZTAW2439530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2852f0313bace70ea5568c63705c02ef2527d5adeb519144cb3f21e7b01ec49d. 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/CA5KR2486714.