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 0x2551df066e88701cac98f3c6b7608d8e4f38bc26607edab69c01e27cf9e8e6fa. Chain 2 (Bitcoin): anchored in block 953614 (2026-06-14T08:40:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/14f01e73-ba38-404f-9363-9edfd0d7fd51.json and https://artists.proofprofile.net/proofs/artist/14f01e73-ba38-404f-9363-9edfd0d7fd51.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 0x8f3c6715a1f80ec2f7dcd7dfd9d801ff9b6283438db41f61f1535c75093b7055. 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/JPU902205281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ce8202aba45866e86951d3464e95f8b7370f8d56c5401ecf13fcadd49a2d16b. 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/JPU902205282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fb2bb53401a222b6ac9747f922587df6843e2b5b34ae6148fc711eb310bc326. 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/JPU902201117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3da9adb7e1493ab3cef0d83ac315d049c6fa712240b3796b92672908e4418201. 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/JPP302100069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75bdede7efbed34efd44969ff1e31fea0327f80cb9e29e21dbc6f2268db2b160. 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/JPP302100070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b5f0ad460a96eb3f0c74c15f5ff781e1c7275a701ba2aaff756dadb17c251ee. 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/JPP302100071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eff49f660eb9112d1a777705f109fcca0ee1af4812d5229d981da9196c0b713. 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/JPP302100076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x173095a5055268e3759cdaaf4442ed04c9bad6f54915bc01c1193b6737771ca3. 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/JPU902401899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x999b97a716e141cd9a5aabdd112ad4c486792680234186db84c1be64623fd73c. 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/JPU902400433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35128d11cf765e9e0e21576e834d0985331e55277762728f403603356b2a894b. 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/JPU902304442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x726008a35644b732fa388cf84fe2e3f51b98d241bca31edb2b4a4b2bd33745d2. 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/JPU902304247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ce8202aba45866e86951d3464e95f8b7370f8d56c5401ecf13fcadd49a2d16b. 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/JPU902205282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x788651bb2d9b9e932e7588bfa8397c8f1081f6a67a539e31da4afbdf4932b5a2. 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/JPP302101667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87f1487a52faedb223a9da14876809b3deda009cb7ab8918f5353d451883f703. 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/JPP302000224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c5933aee78c4c8d93d3898b2629ca9c1a8afa66f93ee95e801332265c7c4762. 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/JPP302000225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0132cef4a4d82aaa629f860bf59c541e9109ca1417966a37ba655fac872212b2. 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/JPU902404072.