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 0x8ad00b88a74b6d9c6495c52a7a0e2c0aaf2b396bf0070febb15e0caf48e9a370. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fc52f266-d68e-4523-a032-f41d17057d81.json and https://artists.proofprofile.net/proofs/artist/fc52f266-d68e-4523-a032-f41d17057d81.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 0x1e77b1c09bb2735a63c5f8019fbb5bc4f7df284ab2a4cc31a9a37c70d3f32e94. 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/PL2DY2400243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa09f8e81870f7e3e85d558c64bf4b96049bb5c27558e574c5468f772d00d15c2. 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/PL2DY2400275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf7400ec97b50be10d66530fe5012e5d76ad8fc8f7ebd03d7921fdae1a7f076d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/PL2DY2400272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecdcf7d20a75e363fd756980be5c4ffba469c92f2fc3bab52997163dd0643175. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/PLUM72400108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eab95358259aa23ba3ac76f83d3c493ae236b7b1bbbf2f0fe99d462a7552681. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/PLUM72400111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0555d748bc5fd36289a26b410921b729caa38ae335c773a514f57d7062f58f54. 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/PL2DY2400256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e77b1c09bb2735a63c5f8019fbb5bc4f7df284ab2a4cc31a9a37c70d3f32e94. 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/PL2DY2400243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa88265c5d431a644a56494bceb86cd830d7c6f4434316d90d59a1fbc3961381. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/PL2DY2400273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1a4e7e12bd66e97f9192a3b5718b2799866dca7da5a684eec8e1f4d6f5cd116. 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/PL2DY2400267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20f064be728d725c7c807bb0c32f70eaa71dd33859a3f62ca43d4c31ecd7defb. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/PL2DY2400271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd92420a1942a7d541a3b7fa5f17d3f83e990e0c83496eb85df4b651b49e6b4a. 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/PL59G2300350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85addabdcacf2eb1bcc698258b2ac7fce879068c5683e1b6c04071ef66eeb7ca. 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/PL59G2300351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd74a0cba2c8fd544a120aa130e707ea9f9c685b520ab058e6f3aeeb600ee5116. 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/PL59G2300352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3fa2e187083f53625278f1e2834ffd323516d0365297dce36547f5cd2cb4664. 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/PL59G2300353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6361c015b9a53635c294a45b5d5c0fc37535b83964e856db106c2590469baf2. 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/PL59G2300354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43c75479645e60c7b8f77b6aa128479d77e62ebd055ec1131d0a72a5c0b3546d. 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/PL59G2300355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6985bed290d7e096c77aff36a1775242698755c3fa835785fa98cc406d7c6ea0. 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/PL59G2300356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb65398e2376a071b2bb1d797465e5b4dca34bd1aa004e492b49c3c3f9e8b7317. 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/PL59G2300357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6581f3f7cc68fe197a747e21b7df10333248e8566ddcde136eb956f10bd7fcdf. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/PLUM72400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ce9a799ecd3541efdaee5071e4ba91f50eecca7d4348792d073fd128c917a0b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/PLUM72400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec4d47f3c4772b2196aa476ddf6f4f8dd81effb77052654ea42f7a29a5069e4d. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T15:40:30Z), 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/PLUM72400019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f99c67b5570934dcae519bd188d6da71fb9cd47a50555a2433864febbf069a1. 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/PLUM72400018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec3811321131f6bee1ec115c66145159b9786870263398acd1901235308adf1c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/PLUM72400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8566d6c7fd770c0e8c6eaa7551e111cf45be78d65dd816f1029ad415b8973609. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/PLUM72400021.