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 0xd91f96d2a043346afa7a7dd0981a43ab4538280668d6cce9ee75056d9e8db193. 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/4f9b7d77-b299-4ed2-8f5c-19a525699477.json and https://artists.proofprofile.net/proofs/artist/4f9b7d77-b299-4ed2-8f5c-19a525699477.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 0xda2f7aa99f38504a2ebeb1d83aadb5f9973bde69dc791de4aa201476095456f4. 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/JPL802303001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x049a2af3b53c76a7f14dc8d5a8bf1cf5e195d5fa78a7ab37edf165f0d3f5750b. 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/JPL802303002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30173f12e2fad98781526b0cb2744dd55bf96c733b8c56da6a4bcc63802a2bef. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/JPL802303003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78d59d6f538ebd5ecd99abdf623af9dec5c85465524afe64d9cf10c2e1621fdc. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/JPL802303004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb188f8222361cb370e0acd9337116b6b6c59a1e95c80e4c35fb729c781aa6d94. 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/JPL802303005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cffd75761041c437eff62807f40fc6877fc0d4e7a4ab8d2b75e13b3c8022035. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/JPL802303006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d9738c3fb2f5c7e0a3e128d53899953ec07cf880808618f3c30e913cefaa4cf. 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/JPL802303007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30569cfcb544176fb3bada245f9c93e81b2316bf743dd0bf398cf2eb87893f20. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/JPL802303009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aa5bdcbc92048965262d4e42189f35f94850313db095d60b27805a6194aa069. 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/JPL802303010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28620c9904fe1be3bd93c95610dbcc49ec38984ba8bce72c7c0b50f7140b3cf1. 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/JPL802303011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd37c41b07bf9b9f143dc2ca7fba123d34ec35a4a4cd76df142cc0557f66c300b. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/JPL802303008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c009d0ec09d0c9467e6a35d94d94847b5a713df9a028f9cc098a18e4f956580. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/JPL802303012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f365db5c7bee8d2ef6cf6b82040f3078530df05bd164cbf429c7ba033eed575. 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/JPPC02110086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf600388d3967bcf1f6ffb3d7eb2ea48f9821f567209217cddd2c0c4682f7931. 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/JPPC01502677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe142bd233e706f0adb68f3c5219ddcaf20201d52d9c36ca6206e475556fc4a99. 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/JPPC01302636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4adbd169fb81d8a2fdde6cdf680d83068d79ad6287e2ad75a7520fa4411e4cd4. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/JPPC01101463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaee1fd78acea41f427e14ff1d11b7d95f0add8eecf044939b6d1c0dfdcd6783. 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/JPL802458001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9207d7002a9c671c1c40d8ccfbb9a4d4b97a2d43552db25dc1774f38216f1d8e. 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/JPL802440001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d9738c3fb2f5c7e0a3e128d53899953ec07cf880808618f3c30e913cefaa4cf. 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/JPL802303007.
Mirai / Today, Tonight (Standard Edition)