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 0x30371be3ae2db43d9a30300f9f3c907dbce803ec08c524bbd83b2ff90b1530d3. 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/55dd64ee-c61a-44fd-9ee3-078e605bc0c9.json and https://artists.proofprofile.net/proofs/artist/55dd64ee-c61a-44fd-9ee3-078e605bc0c9.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 0x5253d56bb7a95d53ea49fe3431b6e9d5cc61d88ce18d8018ced65b487a84cbf9. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/ESA122480077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98b3d45b8e433555823bee9054268995c0e44d8d24b34af8e5723f85c3dd1d22. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T00:09:03Z), 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/ESA122480078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6554a172eb91f444bc308faa4449a9e9dadbb01a8f3f6765b997caf25da6084c. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T00:08:48Z), 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/ESA122480079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93a2aefc55771416b96ef13bbfd5729e4d63b1a14fb170b26a56125bcd4794f9. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:16:24Z), 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/ESA122480080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2c447c2f247c1b270273be931798f9e85edb1f0bec0235da2b862a7733b44f1. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:28:03Z), 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/ESA122480081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaba4d83a7c517d8b8cfac5ec9551dc6561b4c38d4ce3994672fe4d4bd137784e. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/ESA122480082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3db8646402a03af91f4a75018ce758ad00a2e9057444d5f846b70611e1445dae. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:22:06Z), 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/ESA122480083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x780e850f47798e000c1b0903211f2f4453fb1c32a6fa04e304446c6a1e6ecd87. 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/ESA122480084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a46c29f19380afb756f0a86c49799cfbbd471d06d969b8c8bbf9061c8ac50f3. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/ESA122480085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2f8db8508633e1e12a275f20ccd221feb4d26bd9c88ea302cedc94169db5ad2. 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/ESA122480087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbca5623db5e9f335593b74e55f5b2b7e298a7f03713913fecad17f22975110f7. 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/ESA122480089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc383b399e9a7d2afeb6ced3a0392fadbc46bdfdbbf116c9a4f594da99aee53b3. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/ESA122480090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93598de2664c475f350759adc7842aec39980285ec73b0d1b64c8b1362c29288. 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/ESA122480091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44118570afba1712cf9754c9b29e380e3658981228ad6008d95995e2394e8a9e. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/ESA122480092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe68521ad0a1782f65f0b618fb3bee302c222b2750d374e2f9448391d8c9250ef. 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/ESA122480093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x087586f464e9502fcbf748d921020b07a5345113d61e440932d5466fa4ce0add. 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/ESA122480094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x741235dccc156bdcb901cedc1f5e45345fbdaa010d3a5620aeaa2f47e0cf29f3. 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/ESA122480095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9511ed77ae500267869f81f89486acbf4d269259d47a94b5a720827dd140ea34. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/ESA122480096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f01187ce640085eb78b69efb8f6206304a9e664a409173a12e07ac415596ffb. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/ESA122485238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d0e38fd9e2478e73233b13b45459827a57baf13b127e21aa54e634a7a208c17. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/ESA122485239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fea9675efab13b8145b7e0ba978051270019388b3aaccfa6c7030b6f345e519. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/ESA122485240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a7c3a4b083609648a3b65d71059c25fff4981b81f35a0b9d240bbff48da0c6c. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/ESA122485241.