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 0x4fbb3db8469fc421bcf4293f49728f6f79e0f92924f7eb7f68be7de2555e8da9. 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/b1495b0f-adc0-4433-8772-46b6962c64a5.json and https://artists.proofprofile.net/proofs/artist/b1495b0f-adc0-4433-8772-46b6962c64a5.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 0x1bdc87e603f2112929cebac89f105567de2c6db7678cbbb0f546e38b1a6695a6. 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/INS189710281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f273e0227dda925771b8561de13c8e6663c4acf061d022ccf45b8218dbcba4d. 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/INS189710282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b30d991d503cf9d9679081b92af83a046f6dbcbdcc74f2ed88dc242931f7c97. 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/INS189710283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4749bf26a443cbd6defa7e6b147552a8e7cdcdc0cca830805612b7594ebea6e. 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/INS189710284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x215d40edc82171be56262aebec98d61557224223f72465a9497f17ef8b34f3c0. 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/INS189710285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef669a3862f65a094146f743bfd6adf1eb258a09cf92ac68b2abcd272e56dbc6. 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/INS189710286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22b2df4f0ae4d5641c86a33fe235daf2403f04e16d79042d08e2769a81a6b9cd. 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/INS189710287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed73019d04cbd2dcc180df0fc91924ce2d9eab2585e275259a59ed2bffe97fe1. 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/INS189710288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe266ecf936b19de99d6b1039950859717ce9d39d659fee4bbd7c1e30f484b594. 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/INS189710289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x949e1341818a85a57b5dfca9c3b732536f7d997a7fb5ae0fe18bc5336b66e41d. 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/INS189710290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84a8728ae34b8acf898d63e73ca05419f85dc8e85a3db60c4cd0879b928e7075. 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/INS189710291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f8a64d345c7272d1ce34e8d08862119ffa35ce5a6eb175136d4a09aac2bb505. 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/INS189710292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec14e35bfd687460183f035fe0d4103043db3f4fa9c8de6839666c1541b66ec0. 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/INS189710293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x248303e32ec96454814b9ae1a238a53c32015e8bf1940eebe04c272176b0351f. 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/INS189710294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb6492a2af92af95f2aafe2cc2862c2dd59d1a0d25b729ed9d122ba0a3e201ba. 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/INS189710295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83c9e4b255d2bb45808b1a97c36c12077c2e8e6dec6c6d227c830b3708399cc7. 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/INS189710296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c3d45d380324238ef0a22b8dcad382e978f1852344f72ff3532e86a3a639d37. 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/INS189710297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x521550cab7957b9c831acf0a7cccc4fcec491338edb8d59b5922a3fd2a3a1518. 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/INS189710298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62baf7f5f675b5b231bc208c82b5e3ff5dd6be06fa4c0da569b26346f5349231. 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/INS189710299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d095d5e56ed4f841feb6e32cd464cea3f70e622cf52b1425292c2dc7b0080e6. 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/INS189710300.