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 0x3dac81897ea9db0be93b9cf6a73df21694661c6c59cc6d1694aed63cb34887c4. Chain 2 (Bitcoin): anchored in block 953777 (2026-06-15T11:52:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c9e59634-cadd-414f-9fd9-ced1276a042e.json and https://artists.proofprofile.net/proofs/artist/c9e59634-cadd-414f-9fd9-ced1276a042e.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 0xce1d2e3dd8bd40ced2abe7ab331fb629c4e45f9f73dc612ddb08d2ae6b682d96. 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/QZWFX2416689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37ea5c62c8336f9ffa8bcfa641a020506dd0696ffbc4b59a70cc0a8f11535154. 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/QZWFX2421921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e8dd140ce9bbc0cee9a1e44db43c68bd43416a9c90cdce25f3f90f8b1f245fa. 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/QZZ762428543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cafc4a43e4b5f6d6f1b3223ef24dab28f5bcdd83e7eb1384d35bba1adf0d0e1. 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/QZWFX2421202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbc42f27593868623d644b32eb337f68740e903e0b9a6fab827b576de002164a. 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/QZWFX2416698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5224e93e206ca17cae0ccb1ae1f59301e7d303a18332ab431192359dcc1226c. Chain 2 (Bitcoin): anchored in block 958369 (2026-07-17T08:00:48Z), 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/QZWFX2469284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d1f72bd68a5cdcd3a9fad24bf9c3137fab5b0d3036cf6000fddd4fddcf1ab37. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZWFX2449274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc509ade830e7129298468f43bdcf73fb6f2d70cecd950a1cf80cf0a7937307f2. 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/QZWFX2459766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x985466f864cae022b53877bdc9491245ec93b1644b3a5b898ce05064be4696ef. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZZ762470822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85ccfd63a9101abd00b2431690add4e95b4b7c5f04dd9f34c751d4c055cf3208. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:15:51Z), 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/QZWFX2489192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e305fe6d36201a547b6ebc0cec03141eb77fde1915c5b2049ec0b0323b27963. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZZ762435266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92fbe03d7f4bfe605748f41963b56aec14addca7de07f687b0464c7c3eac2669. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/QZZ762433925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafdb5c04217ff2a484e52aae1fbbe7e2754e0be1b82680bb7f0b73c95f58ec5b. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZZ762433551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04793415407b5141a953f5f71397a6380f370ebab4d524fa9aed2b44920cccbd. 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/QZZ762435277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23ad5a228355606e2d05b93fbd54dc116042d2deb9afc0dd483e94d95c704f1a. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZZ762431825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ea25ce2c8c2d8aa0f889cb0a421b11127f49268f999e6c0db31535ae218b383. 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/QZZ762433506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dd7313979bb8411f0605c70f6c645390043a1f4c4de2dfcbf540b703e692b50. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/QZZ772473711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20dad16a98e8e1467b751b78e809ef866d50aca497496ee845538e71294fb232. 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/QZZ772473768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83f076b2a246eaeba1646d7cb9d8d396931501f5bc50d54bf6cae9e581f36a52. 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/QZZ762452681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a96f5b1c49e5094d748a3cc8f2fd63ffa5898c5a7c3948c1422a3b33d7ee5aa. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZZ762452680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76baa0333ee0e3b8f1165609dff218d800e5634c31d462ad11d0d2384cc27156. 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/QZZ762441068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4464a7a48b36759f44d394b8db8266927bb635cd498066f1ab52a43df59ab194. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/QZZ762452117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef999e9b50a2b50a4cac8d0d853a2f8d3b7c2a44a43d6294a1a0e8f238ff4637. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZZ762443136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4b5db92c5e53a7e3618abfe4d2e48b9e9b7d5554a59436a00376cd36fb51184. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/QZZ762443116.