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 0xeb039cd202d1824774968cf3a144a8e183cc90addafe473bab2bb1d2ff8d7bec. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cbb697e7-f115-4714-a80d-c4e27e452eae.json and https://artists.proofprofile.net/proofs/artist/cbb697e7-f115-4714-a80d-c4e27e452eae.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 0x07b3d766ed4158b9f2e7d6169452b6b5f54987d4415ee4ad3aea5f63a8315903. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T03:54:15Z), 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/UKXN22331245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ecc7fc22f706be1276aefdbda19fdff60e213e88823b2dbdbdc4174c2abaa58. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/UKXN22331244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93dde4114f2f2f84f9a59d0fe8b15e7acb5d455c15a6d1d46317bb90897f8814. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/UKXN22341136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64ed0a979ed5a83a56e0519d74d21a61358ac38ef2b5a3286c36eec8d9fd6f2d. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/UKXN22341138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee20852a36b7c0a0383c7fab9db354f8c9665708c8fcb8988eaad376876633cc. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T11:03:44Z), 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/UKXN22341139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0c54c80fc32a2e5104dd860df5e3f8ad7add8a67785432b7cb7491b71e5e098. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T08:39:34Z), 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/UKXN22342001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f78f88bbec7828bb5f4977ecf92967362e372b75ce45ed6193da5a56712499b. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/UKXN22342002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x181fff113ebad10007aa6d7acc80e793e986148ca8d927b04cd6fa06bd4ac1a8. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T08:40:29Z), 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/UKXN22341999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9822fff10546be72140e7ef8fe62b9788631f2cf24fbd6cbeb0b804791a4521. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/UKXN22353353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b17fb23c1045993d6b2327f51c9b033d801e39e975eb8b8725d4bfc237547fa. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/UKXN22357819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b9aa6b606b6d7a1e2d4b80cdf9c365d549a7e728e8d6b2bea8345e2a9b7a82c. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/UKXN22357777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbf6a2cd98f18c095de08be79798da30b66e76ee0a9379484ec3a601fa69b8d3. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GBMA22303571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fd37058f414a5e88e33b23aa683591e62c4fc253ea8bb78e9d8ebe4cf165674. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T06:45:37Z), 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/GBMA22303573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ea029ad89d24f8a49faab6a9c5b20f7fded305b62687e58bdac361a178b6add. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-22T02:31:31Z), 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/GBMA22303574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7b1fc0ad4ae9d5ccdf19824163780674be3468e8534ee1430359410bdceff24. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/GBMA22303575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3267c34086fcda50ee56788df152759d23c70a84f3b566a58827d5b890556e3. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-21T09:02:21Z), 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/GBMA22303577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe839ee45ca6aeb4e26effa147a80b49c4c4030cf3e98cd170988bf2051066cfc. 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/GBMA22303579.