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 0x7b5d3f17cb98d97c172d154fb204d3908d6cab3d2ce5ad5694841e94f2b73b8f. 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/740cc86d-2334-4d24-9de7-e77da0d1ef3b.json and https://artists.proofprofile.net/proofs/artist/740cc86d-2334-4d24-9de7-e77da0d1ef3b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Antes (with Obie Bermúdez, Sergio George)
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 0xb1fddfd684557ab5d0b781e086f608a7e91b9a33b21c7e280df70c03997a6d4b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZJDW2200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde193d1eab0a591d5c73924dcd5aa29ba4b38a5188a2e86d0307c885c921923a. 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/QM4TW2480494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fa2a8f53f82a4b6e4d18ddf3b0fd6dbfb81a1c9fba77ed0c6c6e8d008c567d5. 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/QMUR71900130.
Unity: The Latin Tribute to Michael Jackson
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3af605bcc6ee3d2088ca42028417082837c3f12638e1de336b1aaf6f18104b41. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QMUR71200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cac549cae936e724eeb7f3880e798d9e718d69cf10f8494171d9c00e7cc62d4. 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/QMUR71200025.
Unity: The Latin Tribute to Michael Jackson (Live Concert Special)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc389d3bb7422c9409a7aca99631bb391f6aa6b8f9ad5be664a4ff911a2af816a. 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/QMUR71600081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc02399d85c89c9e839986fe9c3f67aa3bee93eab70da17865f37f527b184fb4. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USEL10600193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f346870bf1643752047890bace5f42cdeded287a655606f5df0f3db073c0581. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USEL10600181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fe4dd23f3a46529df69ba5f7e1d68c120ff1a3d8131711f0870b46204933464. 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/USEL10300183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a0d661348e23b6d703b9d2b3f988ab6298911d229bd31299d08193a4f406d45. 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/USEL10600150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa34cf029ef6da8f3129620f839c7c135f6f1712fd910f6b09c022d0d8e73881b. 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/USEL10400328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b20893bf8f72d76fabd4e456389c4473ae0daff4cc7cfa14e87e5c725f39d8d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USEL10400347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b247a8f8dac362143ad05defab633418a789d7cac7c6ffcbdc97f90ec1b604c. 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/USEL10300184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8334d88f24bf30a6794fdc8775c2d04ea01dd66de3905e851a88aa6c1f9078ff. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USEL10300189.