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 0xf6be0313e1c51d20b1524aea52ef95dc65fec82e98dea2b3861d371ddd367c33. Chain 2 (Bitcoin): anchored in block 953777 (2026-06-15T11:52:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cbbc3a7f-4550-4e21-8c3d-9cf623c7a27e.json and https://artists.proofprofile.net/proofs/artist/cbbc3a7f-4550-4e21-8c3d-9cf623c7a27e.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 0x1af0bb0c3eb3fcf1a53f34747ad03b979d1263ffdc40020a9d9c96891913f444. 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/GX3Q92545691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1470d0b86c3de8fdb9a27cf7f62cd02edc2b907f82081ee1e68b20bd1054f877. 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/GX3Q92545693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96be9a509fd85f9a06e3779b20a463acac8b82dd7aa8f352d22778107a7c7e7b. 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/GX3Q92545696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3a841611ba0fca92333100de3ed311a4b59f1b7b427cf7088772fff3acaf3d9. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:08:48Z), 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/GX3Q92545697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x448041b2a87726eaaee8e6989e013555388c9ec3e90aacebcf3dcabe8fd631c8. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/GX3Q92545700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2f9f2aca6754dfdf5439f5a7163ea1bd9e6bbcf0ce4685721ca3a23da6fb5d4. 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/GX3Q92586447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ad8193a3bcf13f2ef8565a97ed0274b44b6f359b7eb56462ce493ca91455487. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/GBLFP2504902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c09844810dfabde7c84876c0c1b280347b7a8c8e0709755f75b7da3ee8ace4a. 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/GBLFP2504903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ebbd1e4e46c331cad60fb397804e1b86366f9f256e9a6d6b487f5f74bc2a698. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/GBLFP2504907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57f4458e0e5602232bf84ffd60c736fda0b226f800cf6a089c25a15991e30c7d. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:08:17Z), 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/GBLFP2504908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26da6c4297d6b0b6c5ae7f59bc1a7db298570abc861393345a4b8d491e0e8654. 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/GBLFP2504910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb076244e2c553d3fe8d85f62544912201c8808f233cade3a46e4ae03b6b29c9b. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/GBMA22526064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09f808ec4ae4c128a5618d1231621bbbf2ed2b74b77533f0002907f74a198d12. 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/GBMA22526065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1b683985e72ffafe1527e2a39cf54163ec4c94f20223effc27936184e883a98. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:58:44Z), 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/GBMA22526066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2574d342554ed8585fc1180a1f830d80868f4b88c7562e578c7d80c0d1d090eb. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:40:55Z), 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/GBMA22526067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x787df57957b9e15d0f3b4003d0fdd36d39c99d7c25de7e5964894f22335b77c6. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:14:34Z), 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/GBMA22526069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20dd61777a6e3fc329a6564899a83d2f806a6b5cd08798bd7d42e6fbf5b4cb6a. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/GBMA22526071.