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 0x1f79470aeacf09dcc5ae809282b41ca9fc25fa0d5e02e41641cd69e8793512bd. 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/714d9caa-c321-4d84-9abd-0b8eb516bcc2.json and https://artists.proofprofile.net/proofs/artist/714d9caa-c321-4d84-9abd-0b8eb516bcc2.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 0xc7b51036098241961ee62c08f6f2bbdf16e3222b0a27a0e41cd44c8f2fc234ff. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/UST8K1774537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7b51036098241961ee62c08f6f2bbdf16e3222b0a27a0e41cd44c8f2fc234ff. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/UST8K1774537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x156f01575dada35345546849c890dec9d03050f394abe1e92e163848114e635c. 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/FR59R1950662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84fa020b23cbfc5bdc35145d22d7d822c1b4242dfff53898dee4855888be98b2. 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/FR59R1950663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd91a678f36da8325866c75a194773185d652169194ee2220f6dc74041ab0acd8. 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/FR59R1950664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaee3060da017a0f9345a71860310738871018d7ea84fe95f127daafb735a2f55. 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/FR59R1950666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5ee8cfc77ddbf70ae3f891e6c709b3dab82b0e6e26b2930513d1cb1658514d1. 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/FR59R1950667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfacb3aa2351362d5166ded6e314a78e2cf202b9cc7ddb508d170cc40f8cb98a7. 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/FR59R1950670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ab2517efd004915fd8e5692c01c1fd32c3cd0294f7a5e5b55aa8beb7f38ad96. 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/FR59R1950671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x156f01575dada35345546849c890dec9d03050f394abe1e92e163848114e635c. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/FR59R1950662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd91a678f36da8325866c75a194773185d652169194ee2220f6dc74041ab0acd8. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/FR59R1950664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfacb3aa2351362d5166ded6e314a78e2cf202b9cc7ddb508d170cc40f8cb98a7. 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/FR59R1950670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x156f01575dada35345546849c890dec9d03050f394abe1e92e163848114e635c. 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/FR59R1950662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84fa020b23cbfc5bdc35145d22d7d822c1b4242dfff53898dee4855888be98b2. 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/FR59R1950663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd91a678f36da8325866c75a194773185d652169194ee2220f6dc74041ab0acd8. 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/FR59R1950664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaee3060da017a0f9345a71860310738871018d7ea84fe95f127daafb735a2f55. 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/FR59R1950666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5ee8cfc77ddbf70ae3f891e6c709b3dab82b0e6e26b2930513d1cb1658514d1. 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/FR59R1950667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfacb3aa2351362d5166ded6e314a78e2cf202b9cc7ddb508d170cc40f8cb98a7. 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/FR59R1950670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ab2517efd004915fd8e5692c01c1fd32c3cd0294f7a5e5b55aa8beb7f38ad96. 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/FR59R1950671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28d60ab1707c72a483529e1850e991604cba050080d3debbf3f07dd84671de94. 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/FRX202036932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe934f4425e82162c2e3fb9a75b4615261f1d644e9aa6a481f2a4cfd03be544a3. 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/FRX202036933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf844d75f4796b1cc90f35ee72e72fe5383c962a3cb4f0c412d7ce9494b7af6fd. 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/FRX202036934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x296ca60e9043abbcd1430efc496bc3f8d69ab8d06f57c835c98f99f5e2993a12. 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/FRX202036935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe934f4425e82162c2e3fb9a75b4615261f1d644e9aa6a481f2a4cfd03be544a3. 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/FRX202036933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x296ca60e9043abbcd1430efc496bc3f8d69ab8d06f57c835c98f99f5e2993a12. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FRX202036935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8eba5c988dc1f0c3c9f93cf3dd0ada55472d5977241b6da776a83e7fd2ee3c8. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/FRX872507958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fb4d50f9b52bed1c1920ec71058026339379798437055a582bfba863519d2ef. 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/QM6P42442610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddd3b7d165b33eed4a45ec28e8e2c0a70589c527532b59fcc8de2f09b56c67ed. 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/FRX201975403.