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 0xc5ada1c2e76deb66264217b36f86d669b7549b8cb8b059b154b60df9e92d8b42. 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/d185454e-aad8-476d-970e-f7d5997c1fe9.json and https://artists.proofprofile.net/proofs/artist/d185454e-aad8-476d-970e-f7d5997c1fe9.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 0x06cee1297ad07de21fb8f2cf7417aa65545cca96532eb841eaeffe895f66c4fd. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZEQU2200088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x265f4271f03b66ccc4c0cb4c98f7c114840acf4df157c04d142a038812236137. 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/QZEQU2208398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8fd5ec4319e3dc1d16874a58c0bb8b4787ceb8c1ebb3dfdc919de47224f5506. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-19T22:47:30Z), 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/QZEQU2246914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x265f4271f03b66ccc4c0cb4c98f7c114840acf4df157c04d142a038812236137. 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/QZEQU2208398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbca954472b5f021c4eb90ac4e57b7707f94dd567f71c2f148511c4cf399e998b. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:20:06Z), 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/QZEQU2255868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06cee1297ad07de21fb8f2cf7417aa65545cca96532eb841eaeffe895f66c4fd. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/QZEQU2200088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12099396f7e8928068e23d14c751c05f7ed14d6430d9312ca9fd99bd330b8023. Chain 2 (Bitcoin): anchored in block 959018 (2026-07-21T16:51:07Z), 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/QZEQU2255869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x863fbf7a63f9077eea4a8c8c89c21022caff3cd577fdbea63a8a60176c1d5cf4. 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/QZEQU2145037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x125658abac88d3740edd8a820af0ac513592e044fbb8ee96b5f14555986ce6a5. 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/QZEQU2075859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50a19ca886b11b014e0b5083dee15392402cdcfb0c563e29db7a1c876bfe0c87. 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/TCAER2073753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8fd5ec4319e3dc1d16874a58c0bb8b4787ceb8c1ebb3dfdc919de47224f5506. 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/QZEQU2246914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe29072a9ccf3f2b7b62e5783f5bbeafbbef47ce7763cc4de3db32ddf3f8f59bb. 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/QZTV32231387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10d4f6c7b5807fb6d3acc6dfb9236f49e65963ac2ef0a178b7fbb9fdb19a33b3. 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/QZWDE2218381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a80d9683dfc52a82a7b657b01512c748f28ad860ac0ac7d341a5326feb04244. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:35:16Z), 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/GBRKQ2305370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcc222c26120a44318f9e5c0eeecd2768483968dd4073de16f9cf658397348d6. 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/QZTRX2347460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x160417e217e73a1ea3971b355940ab2ec5329a666bd809c0d020b37f0eb3b6af. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/QZTV32362564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10ff3f41982acf5fa0c9339162f09a8b33337e04e76ccfbb4410ed41adfe91d2. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZZ8A2394686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf918668899ef0cbfddff016a214507846ddafd63970140b32f3813a98bac822b. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZTRX2420249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcc222c26120a44318f9e5c0eeecd2768483968dd4073de16f9cf658397348d6. 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/QZTRX2347460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10ff3f41982acf5fa0c9339162f09a8b33337e04e76ccfbb4410ed41adfe91d2. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QZZ8A2394686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x160417e217e73a1ea3971b355940ab2ec5329a666bd809c0d020b37f0eb3b6af. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:03:35Z), 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/QZTV32362564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb329fb20d6e6bf152d12aa2d766cf2ba82fa7a7109f14e8ab5a64c11ec4fc5b4. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/USLZJ2438683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30fda80273abf70acbca989a2b1514c5e0ac132f538d8e4e8da1b5be5152f9f2. 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/QZEQU2401507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb12297dc468681ca3ec861e671367312ca4efa6f213387a387b1bfdec2e7fa4. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:39:17Z), 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/QZEQU2402371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe719b427793fde1ec7c8c40b1a5d8f4749f67e8a86f50c2d2f3cba516648f80a. 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/QZEQU2401670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66f9d02342f41cc23281c0a25a804971d03db926e66ed954c29d6f99e5ebf282. 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/QZEQU2401991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9a199c467c81dda3150864c08c099e59e6b6eb315ef9e2ffbe088f2ef99b3aa. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZEQU2500328.