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 0x36023038a272e4f8088c06b317f52441c10d630ac39f0f112d5e10ba161e487c. 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/0e9eb162-f6a3-496c-aa6d-1403329801ae.json and https://artists.proofprofile.net/proofs/artist/0e9eb162-f6a3-496c-aa6d-1403329801ae.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 0x6cb69f6b5f9f9894804f399a52d4792e11c3ee93cbe34475d12b594cd94d1572. 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/GBRKQ2133651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89324754c2cc84c72802097dab81593210c4f86086e01cdc7e0097a97d0cef00. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/GBRKQ2133648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e0bd01ec5378adab64eb61526e958cddcf8136152928aeea3880c82579e9eb0. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/GBRKQ2133639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb70311f6afbd4cf3607e93ae2ffa2e96c1a8c0d1fb2351ae49da668212767814. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/GBRKQ2133646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4171de9d2b8b91ea3370ccf705e687be59aebcef1702585d05653bcf147343ab. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/GBRKQ2133643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75202f84197447a7303965f1d31b0fc90015c7fb6ca6532615edc38d73742e80. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/GBRKQ2133644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x298f9bc0e86656798f398408da9704e3c6c55c736f34a0f01e3a5647d1f674db. 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/GBRKQ2133647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb94de951dced85220f606b835fb7157357408dab4a68dfee71b16318a2ce511d. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T13:49:38Z), 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/GBRKQ2133645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93955f06d5200affcc63856e91ad97abc401e1c853b1c0db2949e9a5cc7401ab. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZHN52255146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aa58512c123b69d93c6b21f66a44f3745d7b7679b10b8f72697cf6b66b062c2. 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/QZHN52255149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c609078eee3719b33df23b74184739df3491986dee489154ec3d9bfa94a9e18. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZHN52255150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf768e16fe54258445c5a36fbd5349fc1720ac70b4bc38562d822e537be183ecc. 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/QZHN52255151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9aa6e20d3fa711482acb2da3f776b9636ccfbb09cb052e70fc26cb1dccc1441. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZHN52255153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc38fb4a980a16f8039b516952044c5cf8fd1520c7b6559f3dcaf5c3dd78f5347. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/QZHN52255154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cf69a240a4cf78e11937b796d1dab5fa721a8e722ffa4be35d9c697b769bbc2. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/QZHN52255156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x626b1480915614fcee601732b80deec58d402289fd50b79e935d4374bda9d0b4. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:09:30Z), 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/QZHN52255158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x234792b037411b6809b90bb88bc4192d08f7cd2eebc6889764d5b462f8b9d8cb. 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/QZHN52255160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5287696831739765a5242fc23db4f6ca1baccc5c473504a383006a9ae3cefb67. 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/FRX452450131.