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 0x738c89bdb7e3bc7a8e6255e84bf79c536c9d8c067763dcc26dfcee34cee853b0. 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/f24d9170-0385-43c2-a628-ec0aba50df96.json and https://artists.proofprofile.net/proofs/artist/f24d9170-0385-43c2-a628-ec0aba50df96.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 0xe09a30ad9df28212efd2b08dfe4f5c9fac239ab2b6c093207b835dc34285b221. Chain 2 (Bitcoin): anchored in block 957663 (2026-07-12T05:58:46Z), 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/QZNJW2116900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b192da88c4566450931dbf4ef6bf7c6e15ce6bf82455ba40695e13cc667a38d. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZNJX2122851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd278a135845f31a7406e1f3b4b1a21fcff4df93e4c4097f47c7231fd9847bfda. Chain 2 (Bitcoin): anchored in block 957671 (2026-07-12T07:35:31Z), 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/QZNJX2197937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8656853f4f77fd77357222a2816bfc3ec450721b3e0797b1bcd3b8f98f588de6. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZNJY2194204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dbe908e9f852b4f0ec9c6b65f1df091d571f4f1eb20b21d2f8f8b9f6682e843. 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/QZTPX2139689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1788f128d2b977202442f73e2e6e95ab645ef6fbc206001c5336f871e5c8e521. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:20:44Z), 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/QZTVM2164550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7f87c9f0634a4ba6dad277257d3a9ef0884c31fc8453583990fec823ab0c2a7. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/US7VG2293659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1d21942d9bf8ea5962a24f57f0ceaae3ceb125bbbf9b207060eb31456efb084. 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/QZ5AB2258197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70c08f7ce82a8e654b6edc008d9a0878954a666a623a93ce67082c5d64d71059. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZGLM2273727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x397ac7b1589a3b7098993789f0b870563259465f1083d60da87cd1cf3de2d546. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZNJV2228963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x712e6c6810f1199ab4b2285d49282574918680e176aba70c0e0cc6580bce3739. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/QZNJY2224685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5c06eb6ca8cabd473abe0c8b6d4aa59c27444f60d5f4ba0c3e4be5c2ea9334f. 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/QZNJZ2205190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4de14141e8e4f1ccd8fa18f41f843c23f3c97590ef0e88035e26a37fa29cb372. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/QZW9N2235825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a1b55539f219418865bce3a8feb71848b99ba811e8fd496376f9c971b3783bf. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/QZNJW2416339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fdfb9224f0db59b9b36d267a548bd0060b52d4da58d34ae7ab06c77edc2cc1e. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:41:34Z), 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/QZNJY2436183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x095b7f58f9a8209a3668abc2d4660321791a22819de1927dc4ae063991afaeec. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZNJY2479549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf67efeb460ed4f4670a3b903dae59bd18e9e1b4e4192d467d9eecf256b67e0f5. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZW9L2462540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd000f2eb97117ef240a99c5cee725befa4720bd601b0ce4ae381d68bad036164. 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/US7VG2538316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc621c2807b16ab7175ebc9694ff88afcef5a5f1f318439c383a3a8b1f0df81eb. 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/US7VG2538319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe86751d38faa3f3323a55e2c09f93b08daa61e586af36c8c04f14b911067abac. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/US7VG2538322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37b79cbf0d35198cc7081d3a04eaf13ebff77e6a954d0002ef7fb8719a4782f1. 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/US7VG2538323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe921fb1904d4577c3f00a2042dfa49907bb399b7d555c631ebb4c392f60cc5a4. 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/QZNJZ2527987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1757dfb8c14e083a6df85346a7b162954343d7600d33e16e36f1a458201c1e5e. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZTVM2516211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60b5188c21334ae5fa36d89cf4fa86ae2723a7085c6fb685c0e9b62334b8e732. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZW9K2515353.