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 0xd9749f55682044f85f807147cfc4968628927cc0d2a1caa319b338ad57c08302. 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/ed03b595-7916-443d-80aa-632bc45b9f24.json and https://artists.proofprofile.net/proofs/artist/ed03b595-7916-443d-80aa-632bc45b9f24.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 0x48137ef2df999888cccd9acc48e83a67d045078f475897001c252077972e959d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GB8KE1359455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb779c72b5197b0ce949dd0f6571965407bd7a240f01fb447616d699070a917d7. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GB8KE1359456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb98913dd37e2e9167b8b40ea3ea6c18f60ca01ca487925f5fa9956095af2ed80. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GB8KE1359457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dcf1d145908dd5ee28b13758d8efd3a89d3a292b595430a03500696292378ac. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GB8KE1359461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcae81429f2ae5dc796007c4d0a3e18bd8eb53d49a9e509851d177176e466066b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GB8KE1359466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6102da3396266eba0fecb5dda7aa61031a7639acf00d2c078594575dad2ee689. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/GB3Y21609002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe45ac6533fb2f7b29048118567d5f8841c5b74cd7b92ee0b3af5fb6936ad6cd. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FR10S1776785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51ebdd1042273f054e6ca698f0b691c8c3f68eba072b41767081a2f687cf3107. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T19:18:40Z), 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/NLCK41046078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe40832ab41a936a2c0589a212b677036c378d78b1d7bca16271d13d2d8a1d17f. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/FRIDO1810725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41452eced676138c1402cf7dbc9355f3c4190c4db962b670de79f49a84c645ef. 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/UKEWB1600122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa840cb349db7967717c9a0c4c48c65a204a37a94ec0288b18a07069d2415da66. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/UKEWB1600155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22091ed740b086ed0f17c138b432b5a2923f9b5c9f879fe290fe08d3c26368fa. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/NLCK41076835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x002ce20f96f673750880f81364acc2e96833d540684338aa6d08468b105bffed. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/FRIDO2110158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x002ce20f96f673750880f81364acc2e96833d540684338aa6d08468b105bffed. 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/FRIDO2110158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6560169af0cbbac79f33132b087e3265997bf1619fd6fde6e2eecc51847e3335. 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/UKEWB1600263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc22479853b4a488724a7dfc9e60a4f268c494fef1de43f6e4dcdbdd7a775f02e. 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/CA5KR2311115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x087f1c887ac050d82a9df0c3f8ec72996fb039518aaebd9b339b171df42609aa. 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/CA5KR2403956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17989797944b76d4281f5fc55752f74ab893e40d975f33089afa287d0d9274a3. 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/GBBHF1310969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x947b1e094ce7c180e4dcc36ddf100422968672b7a82d9104492706f1021164e1. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/GBBHF1310970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdef775e7e22042f0a342b263834a6645ce879c6b9e73c35b8114be8adef94215. 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/GBBHF1310972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20c48ffaf1e63cb81f448686ba2a2cd6e237277ebfd8f599389ce38184b14b1c. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/UKEWB1600410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21847be223e27861beb428176a648747fee0871829bc35d9eeb1fe01794aef39. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FRIDO1811014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a9367600440819f20fc74bff1ba489495e895866306ccc09349044385612df8. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/FRIDO1811013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x123804406af3e65602edede364a819b2190188c74cc9945326e7b5e35b5c293e. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/FRIDO1811016.