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 0x6c6e9f091e02da42deab871f66b566b374c8be4f9dd5e4c149d4c36f9d949c03. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ca570d7e-1b61-4c68-87d5-01619dced2f9.json and https://artists.proofprofile.net/proofs/artist/ca570d7e-1b61-4c68-87d5-01619dced2f9.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 0x9320f8d36cfa7072b2624640ee8036cf4acb5b0233528668019f2ff9aaba1d9e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/AEA0D2241645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3f216b01b08993a31f79636bea8134376b326c3c19e283619b6664f5f9e50d2. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T08:00:25Z), 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/DGA082234726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2894d5cdcb596be241b73fae90b90929943c7d0b8ff7b40abb3eb0e87989793e. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FRX202322447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd70049273332744504b9113be287f32a541fca7c9c7d33b9e1655c46ca4fab55. 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/DGA062319451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79825bf1a09fce99d288b142e565e3b3e90364ee4dc0e00bf7b0f59126ddb6be. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DGA0M2477296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dd42bd2c942dba05ebd32ed7fd49ab740fb35ce09f00d1c2ca2309669517690. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DGA0P2403059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x258f6750d348ccaaaa526e71c26da0da98b9eeaecf3337c5c8368f37edd5d291. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/DGA0P2403060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4b3403210b88a9a25cd0933d80bb302bb06ea0df339f912d0cbf896835001da. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/DGA0L2493281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17fb94db9e74333e61024d4c3efaf93429fa7d64b933293cc29e8dc583ccc4b5. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/RUAH62417382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfddf6291490f81695714f55d00e4d25b192bd5a5e42cac6c86076552944b84a4. 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/DGA082419144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb16df103e3d58f2ff0870df14a52da8c21af22acc60b0bf0a6cacb02c62fe7f. 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/DGA0L2493280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4b3403210b88a9a25cd0933d80bb302bb06ea0df339f912d0cbf896835001da. 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/DGA0L2493281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccf859829ef1d36ee12961cc91d0c18b5c6e40d78cf72057febe178fbb716829. 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/DGA0L2493282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x468cd38d91f5c8f0dc0c1c88eb93159a14fd7590d58a5aa607d69923ddc96863. 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/DGA0L2493283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfb44d854c23cd4f9a522e5df8d037895954290299cf2ed14f32c6cf051b2977. 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/DGA0L2493285.