1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xc963fe8b24076f56c22f29429e6fbac073432f0ee25297d6a0bf3af61f20d667. Chain 2 (Bitcoin): anchored in block 954549 (2026-06-20T10:56:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a8de96d8-2d94-481a-8f09-20587ef6be72.json and https://artists.proofprofile.net/proofs/artist/a8de96d8-2d94-481a-8f09-20587ef6be72.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 → block OTSBitcoinBlock must exist at that height 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 0xce98095b0420e98d3699e05b479a91611a13a312582959571945133cab5a18c5. 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/QZWFJ2340022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3d43beb4f9b7d24b70e7b5c5d19d98bf9e90e494bd11b375a1dd0752bd6200d. 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/QZHN52307772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb29a2f3a35c526baacb180064a6fb351b654ac578a1395b24f33882cdb93066b. 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/QZHN72367917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8ef3f314db7006d7e8b0d30768fd781656342c03ec9fe89dbd66c2a4e94c95c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZHN72367918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3626076ff11620293fac295e880d88a5596255c457ae71c9b1eb9358ef5a38e1. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZHN72367919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71307bfca986e79ceee8bdfc958272d56b142604649926830ed8761b18a22783. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZHN72367920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14f9c216009dbe65f9a7f8fd75ec20174ead343264acca236974955c88ccff9b. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/QZHN72367922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2c9c9fd86d4c4b30143bb9fa2121113045e0b678542e6fc463ff12383ab0b97. 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/QZHN72367923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf016d2a19b33848b629856f672f3c8aec036d99062aebb71ce5a9d2b0dc9259a. 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/QZFZ22391267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32121e38ab9b9fb59b73020bc2438bc72e56464bbe95cd2b1436eddcb1db3335. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZFZ22391268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3301924471587b2a4a0876b48d2cc81534f1a1bb20a147245500127ff331af5b. 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/QZFZ22391269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2ce6ddd956822b457ff9c7c861a1044ba1a4bbd1964c3c3881a144d1825eb26. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZFZ22391270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a12dee5d7f67ae4fb1fc071b892485dc9d815d8b0316960133c805ff6eff9e0. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/QZFZ22391271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28e5f87ad02c1b3a5f724f53ce08e8166f467f71c1162b4572f500deaa9102ec. 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/QZFZ22391272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x956a47983463e485ec51586a9f29913f6ae9622e40f9f0dfa0e281151ea737a0. 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/QZFZ22391273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a6b5182f161b5ff36838d1efe936703777010536e11db71142877e21f356948. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZNWS2317435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41b54e4284a66e6af598da1437f6068fb979d02a2e947399e012b6d394fca8fc. 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/QZNWS2317436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0fa63aadf2c2e799af92b7b783a74f69f3aa571f41a644ce2f6b5b88a25c8a8. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZHN32498314.