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 0xcc18046fcc131661552067ed30f871c22ef2b611690b9537094e8e2425147811. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3db4ff01-f518-48af-827b-43252031977d.json and https://artists.proofprofile.net/proofs/artist/3db4ff01-f518-48af-827b-43252031977d.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 0x4f97d2a3b1f4b73dd306c5d803687f3556985c74ea044959e3bff1b7a3c8c7ad. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/PLH492153442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59a5f06da12c8cb68b47ae24f86f69f60502597c3effaccb6475835e0cd7706a. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:21:37Z), 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/PLH492153444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c5e6b2ca753098d0db934e986fb5c9eca4d716bd1c9d4773407ce5a6ce6be20. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-20T00:06:39Z), 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/PLH492153447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1360870ca245420cb9b2c8483b223a1f485ffe0f70d34b3e37e576d53f9086e3. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:29:07Z), 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/PLH492153449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad3b766e7a166eac664e28094efd95534abf76cf71ff1ff4558ef4cfb82d7ad3. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/PLH492153457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9d4123235d4547d592787d69084c0d48d1086b37060df5ebd2c99b4fea49e75. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:38:00Z), 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/PLH492153460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2544ea5d7a71c1bd7737fdeba6a9b8273ed286b50366196e9cea86d692e3bdeb. 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/PLH492153462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ee72ce054e2472890141426adc878ace4ea21daa20b22193967cd691c1447cb. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/PLH492153464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76d5f61eeec2b0f4512014f3210200e7629798d35fb1a4abe2a53dc7cf142c71. 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/PLH492153466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f52aab79e980182b5243e909fbc250a36b11adc61edb76c761fa696fc7aaa43. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/PLH492153468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20432c916e82502912c57f5e254afeaff7754f5f5b20a3f73fbfa805d82a1bf3. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/PLH492153149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x014afe4d2261bda799fb51b47c17d19e4aea471d371f89e4a38e8deca2477d76. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:31:24Z), 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/PLH492153151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd041f78f1ad6a7ef6193439346c83756daf99cad70bc6349d8b179af17f42917. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/PLH492153152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85897f4170059c70b70af091f679c484a994b25538a382513a2cddbdc1e74ac9. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:04:03Z), 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/PLH492153157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7f5af7eb0bd1ce309bd727263d3274e25beeefa023078bd782ead594fa2c577. 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/PLH492153160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86e8182126487a97667a7aeaf9c7021de048fed0b6621ec5bf4b247d8806483b. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/PLH492153162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48ba9f758fe856c8cdaf57a701cc4a356513db807ea446937b8d4b87310ccf2c. 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/PLH492166112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f5e9b934b6c400838ab5af9e604c6c3cdfdde624524e14c9362830cfa32e0fd. 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/PLH492165685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ac3a54b2968968aa39f5f70b0b0cc152adc97ed2d38103bd6dfffaa48d7583a. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-16T21:48:38Z), 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/PLH492178209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2706d729c616ad8fac27fc2d3b9b367368a00d84a0b56a70f236642d564f720b. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/PL44J2223483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2182b6ef7043ca5b130d404319e832353e362620d395e920825b0d10e72afee0. 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/PL7B62310349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5064ef3e281eab9f790ea4c8e26fb73a4f3c8c620b78ee6cfc287b877e708d0. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/PL2C12349818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47077842d56b6976eb19eabd6800da38b672ccd4bbfffed1fa55dabf21cd2c8a. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/PL44J2214558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7f22bc6b69ba317d365a1b6c3cf8e3e5bc3231c5be9233fd0de76f91c85cba4. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/PL2C12349819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa82db762769eb8208d1973eb12b7145a6ea75f87c0d99c5322fef23a3179568a. 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/PLH492216418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2706d729c616ad8fac27fc2d3b9b367368a00d84a0b56a70f236642d564f720b. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/PL44J2223483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a68d4375444477e3d48109b226e93c3446149b7e391a5912be56854581739c4. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:52:39Z), 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/PL0B62492506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a32f0517f5806b497d1ad6a743d8bd30a3296b372582fa29d02952271b1d6de. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T08:35:56Z), 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/PL44J2517004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3db554b241de562797042f952c098a6c2ca09a6eb7c3ee9fc31e1bde58456ebf. 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/PL44J2522338.