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 0xe999482b5fd6d69cbc5a6ea1c9c3abe615be95eb1782f7f9877f83cf2e40e356. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e4a60140-e62e-4bc5-88e8-a31e2a5fe406.json and https://artists.proofprofile.net/proofs/artist/e4a60140-e62e-4bc5-88e8-a31e2a5fe406.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 0x4b82038abf13bab47ec981f3b3631c079edda16f63677d2d5c8597efeb8ab909. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/USLZJ2256745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07ac378c9b456ce86bc07c8bd0e6292774e7cf744e6f933376dcc63901eb29ad. 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/USLZJ2256747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefacbe0e8b77c770ba4c7df1ee0bf64c25f2cdb0f0db610c21febc1ba77e448d. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/USLZJ2256750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd5eca71f57efa25c8c49d2d5d6ea297b15aaf770b4bbe4239508fdf6227bfaf. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T16:27:45Z), 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/USLZJ2256752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6bcbaf51c228c29c2edcee12c098ce22e7e5378581da03e711eb8454d00f1ba. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USLZJ2256754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41a8dea66ab91f87e2c7b2f8b59272bf186017df6903f8c9536d0909c828adba. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/USLZJ2256756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57d4de74b0dbadc0b6c594b891e876658adc4262b360e5fe8f2101cedaad00aa. 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/USLZJ2256760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x342d7917df058ad6d31db8d0acb99d4327ef895c4de8fce4f4c9f549e546acf3. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-16T21:48:38Z), 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/QZTRX2271238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabd2ff39e49e5d0f2be9e61864978ca342d7ee5c9178d014515a9a172954726b. 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/QZTRX2271239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7275a7ee822b4825cfabe095aae6cf35e51850080f1483596aef0b5e4dd3cd72. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/QZTRX2271241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5011378d53f46bf6f1ece5facb5680edd9ad2eeb5329be1fafc6d47428cf166. 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/QZTRX2271242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c6e0c63532a7b9e3e779afe68010724be511b6b006db87f20f348c39e18e5c4. 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/QZTRX2271243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99d64d1c6553f1e5d339f8c2efb1b82450aa143703159eae7af3788eaca309ee. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/QZTRX2271244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab823d326e81744cd1b4e08023aa2d14d2ec79dd9c9184735986f4f9211f61f1. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZTRX2271245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x699c1e44631f57b3ccd20c7270395e50f3e37c1c68cdfd4551f0228caa0085ff. 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/QZTRX2271246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b67887c352837792534fea94a5314e1271c819327da7aac284fcd5af5656d86. 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/QZTRX2271248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8064756b4484f64c980127b4c843e16fd26a3073d54b61a72c048bd8c80dd727. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/FRX202459789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e1f8ce6b81f02c02a510c86399f7d715d107e394ce5a11ccd72d1209541d328. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/FRX202459790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a2866e90856c3af5f3850688f6042631aaf11343ae89ae09e68ea9ca73efc7c. 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/FRX202459794.