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 0xc66e2cd04fd6a585514e1dafb1e7f3602a8a834163f83b82444aa38788f4cfa3. 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/0db0f795-1108-4537-a607-9c4bc9a91522.json and https://artists.proofprofile.net/proofs/artist/0db0f795-1108-4537-a607-9c4bc9a91522.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 0x17e88ae04005313f3f086188d055aa1d75f5e1740ff5f2e89bae4c731fc4cad0. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/TCADQ1847583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f9aaa3e8d815ed2adcb4280f2f2abab75b0e264ca6b040c9b56f4580ab598d5. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/TCADQ1847587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd0085dbbbe294e0955a5549f2e63edb50e8bd9d40551669ff5f3702dfb6bb88. 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/TCADQ1847591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x132c0e0faedec7f35623248e77f1eee365886ba6868fa6ff52e2ebac3dd08be2. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/TCADF1708036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71fd4ce884bebb5c90aeaf360d03f5b36517c5246b02a2f8dc094a7366488876. 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/TCADF1708043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccce21afda87c4c0701548d4cd0990864902a06fca1b9745e8da588f2d67da74. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/TCADF1708046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafc26586be8e0b5377c90df7aeaf798bb309a2fa818f788737f5f741cdd5790b. 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/TCADF1708056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94ba0825bb0240eb589aabde7f22a712c8e10977a74fe88b2b1131b9c3293117. 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/TCADF1708060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6395682401de76db7938614d29b1366c9d58db157a7ea9dd812412c4e84a2134. Chain 2 (Bitcoin): anchored in block 957868 (2026-07-13T14:56:55Z), 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/TCADS1861956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc950ef1a7ae4cf0b24897e81fba5b10bb28175ea3f69e3f7cfba88c63f64f21. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QM4TX1960777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b5443bea243f796c9b4319c7d25bd8f5276bd9c56910da0107563068fdb424c. Chain 2 (Bitcoin): anchored in block 957523 (2026-07-11T04:55:40Z), 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/QM4TX1960784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10fe32cd153ba6292e849ed5ae4c9b0bbcfb0f4ab934936b91cba6475bf7143b. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/QMBZ91959878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8ce53bf4f3bce27dfc4366d4f6245df24c259d6ede3318deb1a74a099ea2c22. 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/QM4TX2002749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cdc689a4891c44e64d6ddc5b689f56b26a14a10fb1f7fbc88827b2c70506002. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/QM4TX2061603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7610946177da9f25c36517d8136779ba23afb59de37e8d2bf472012de3e2a144. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/QMDA62118742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58ec0ab6d8da3c5f2876ef90d69688cac6fd78d31b667bdbee827539d18e7092. 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/QMDA62118747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa879dd0a1342ee58f34c340a794dc21b4b1394b3b7f08c6df394aac4091a8477. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QMDA62118736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dab9786d3c05f73f597b606f98b2df2b7007ab4c9603f3790d2b76d7907a1a2. 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/QMDA62118737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf7edbd1b694882c868fb442ba0821360643f6682f8ff786eddd42a7f2cf5a25. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/QMDA62118740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cdf173d35c1eccaa86c83dd118654a22a1ad88a8a24d5361604f0ad28c9b58b. 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/USDY42119339.