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 0x761c5d6090504348f60d37e227a94fcf35565ce89970979ba3fe41b89f9d4423. Chain 2 (Bitcoin): anchored in block 953704 (2026-06-14T22:58:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7abc1f8c-b5bd-4a8e-b5fb-7003eff15542.json and https://artists.proofprofile.net/proofs/artist/7abc1f8c-b5bd-4a8e-b5fb-7003eff15542.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Thinking Bout You (Urban Symphony Version)
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 0xe83f119c2ef4d2bb8364e79fc13e2bccc447dd4b05a05f5d790670390899f616. 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/FR9W12308793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83fb2202227ad4e6801209ed448fde9d62a46ece7dbbe8a2b801afe62eb3856f. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:55:35Z), 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/FR9W12333403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d14d0b778c9aa4f168d07dd643884dcbf32b2e488ae127c9dcaf92eb351405c. 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/FR9W12402222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbafd7e1b639e6231818bb400b709825ab309c652282082a01b72c7693498fab4. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/FR9W12428907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x542960b6f1f37b20658e07060d1c217dc1e7142d044f47913747cca777c93979. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/FR9W12440377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8de359eba01d1908e528f55d6ff5e2379328f011d712ff6c94275db1d06871f. 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/FR9W12445533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd15e20710eeb9df52a8f9f9cfc0e870a1fbcb9880d0a53c8c1a27659ef52cad1. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/FR9W12449726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0e3812642540c95d47e096fbb07e9ffed1ac994abab37b8faf129239aefb130. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/FR9W12458819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27d827aef75e91065b2ef618147a5343b8344401af5bcffc7298874880b33923. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T09:48:02Z), 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/FR9W12461553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda7e12f7650895a239619a86fc2a720af43d30393e3367aff180a9d13790beda. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/FR9W12463803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd803d459624d62b9b0fdbb7fe6f0db6f1040f80e78c38b4c5ff85f285a313271. 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/FR9W12468276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x615d0afd43078a3e21e52ed080df24cfe2f1b306855901cce5b2d8492ff83f24. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T07:22:19Z), 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/FR9W12458820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fe32816f3e9e44c8d3cabde45bb5fbcb819fcd110da4ce985603f8e156303a2. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T11:10:03Z), 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/FR9W12505097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa74a0173f1f45049794feba71f7a9ec920dad08953bcf3494ef082471c811a84. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:48:05Z), 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/FR9W12468277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x531e01f5d49578e8f28b3d683f88e8b0a1263462349f170736bbcf6565052af6. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:39:26Z), 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/FR9W12523951.