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 0x3283b233616a497d455e4844bb8b64afaa262956a2bd9f735575bb30d45a1bea. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/50444778-9835-473e-95fa-2bef9b505127.json and https://artists.proofprofile.net/proofs/artist/50444778-9835-473e-95fa-2bef9b505127.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 0x52e5f94ab2020a0e22f4fd549a771fa94c5aae7e25687edaa3a7e5eb307b9c9e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BXFAS1900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa68752d2b6e1b65006b2387616934596077a955f1c8ee1265bfced457b5f8535. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BXFAS2000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf8849ac43f5d1cb750c399a64846ae334c649ecc8eea7b8413def5ce033b392. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BXFAS2000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4453565de500be2ab40dabe242a21ecb64ecbe4c16971728047bf181be21bd0. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BXFAS1900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23cdece1c63d1f0d54cb7bde7cfed5daaee01c5f5156ea85d8be32012f3834f1. 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/BXFAS1900011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc10cfed1ffbb3c684f5d3b40865652404ddd5b863de600e601e9a5984c09014. 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/BXFAS2000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x411849e07575983f59d8a1113bd69de6a94da2920d48c340fa13ae782bca7287. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BXFAS2000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0ad0f58fc61578633320212664c3d9bfd9a8d435679c031bde51fd625fd3365. 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/BXFAS2000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7aba0dfee67765af0c5d8487b1f7821d76c101887ff573ed7e923290caa31ee. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BXFAS2000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf007168c63a964735dacd882195c4d161eff327f7826f07687fe4493cb9518f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BXFAS1900012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb4d9385a8061026a6e4df4443316fb260d3fbffdcc6082f75eca18102bbe0c2. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BXFAS2000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb2a44d475429099dc1f68c9ff2aaa3ed63c6c5ea53e6d5f9816fd48c073aa38. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BXFAS2000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa68752d2b6e1b65006b2387616934596077a955f1c8ee1265bfced457b5f8535. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/BXFAS2000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d0006f7394661913e6eadb718c8a77712d5c82107e1337e0db574f32209b187. 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/GBLFP2281957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27aca7c2dc77f888c935fc82f4247ccf622867cc26f7a58bdd114e3e81a2034e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBLFP2281958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee123685a019167d0945440e816837e5d81f87af1cfaf858a86edd01cc1169d8. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/GBLFP2281961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e36e4f8c245f93a200f9520662bb326bf55bca98a7ea72c8a41028ad169cedf. 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/QZTVM2136446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5eb132e6d3250690137e77869a1cce0893f1544361823e1f5b073a40ab10742. 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/US7VG2287591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d9d04aca1a7f7c59996d11b6e4877c754cc060811f143eb3ac23327693efb67. 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/QZK6F2080422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56ce71caa025ac354e119eb2ff38444edbac670e7c5dad62a03d4b6fb8be80cc. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZK6F2080423.