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 0xd07eca8d6bb9482fb02db671b257324d6dd779a9a047bf74915346b7b1835c5a. Chain 2 (Bitcoin): anchored in block 953599 (2026-06-14T06:43:55Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0e39b3c1-9f4a-478c-9031-d1965e11f665.json and https://artists.proofprofile.net/proofs/artist/0e39b3c1-9f4a-478c-9031-d1965e11f665.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 0x6996ad46a488e318dafb33301728526b6aca37a47524ec89eaa39abf09d12d10. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:32:52Z), 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/KRF412300148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7afd5d502df2eaf9584eefb2a1a5dab85726437888a4e0b61b2317e363441e53. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/KRF412300149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b0de9044473db73d03b85dde84d5b51addf2082a6ee0ae6fb715d4b5420cf6b. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:37:52Z), 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/KRF412300150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x027e35d0d6ad1d8045ab7d33d35a5116c1d8216aa412098724835fdcbdf7e3ec. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/KRF412300151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37c78c81827e4886e69fb9c89c8d5fc888bb462baaab63ad23b5d8f190256519. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/KRF412300152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe0472405fe52b28de6f83bbd95926d609dfcf6083e458f79e40beb4aceb1713. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:17:07Z), 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/KRF412300153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd23e0555721d047b8fe71e4451fd77930b3a2a18ec8dc249997eef71bd822629. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/KRF412300154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18edf69e0626d62fabf368d4f575397de7cec79e6f3925681063503a2df93dd5. 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/KRF412300155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd74b7c185fde681ba12edca18ec1cd260c02ca7d19f42fb476bc338510a2711c. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/KRF412300156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cebb2dfa6cd3a603834cac806c6f4db8b788be6c3ffda6d6dd493b59cc349b2. 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/KRF412300157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc67a80a84396c38ee8ee5f083b41606895a1dafb3dae4847b24e16500a796b00. 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/KRF412300158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb216f01adeb551f8314798e7d939752b08fa997a9d378f0a73e25424888e60f. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/KRF412300159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x819e3294eab8728fb1b0c3b91379b84c86bc2f07e2f87c204d093df744226b89. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:20:34Z), 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/KRF412300160.