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 0x1695932f1f57c4e8c6d155eb258f0de532592d1ba2c9267631d24805b289420a. 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/6689d404-0d7a-48fb-a71a-772cddd2e221.json and https://artists.proofprofile.net/proofs/artist/6689d404-0d7a-48fb-a71a-772cddd2e221.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 0x5a4db7ecf05d9282858800cdfef68ea427446ca301ed2a79c9ddf3d442fb4a3f. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/BXRYQ2100504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c9745ca9e9b59d982b00bd2ac3e58c4060c8e0b13c899430930fec76cb25411. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T18:55:27Z), 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/BXRYQ2100505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d7a82c20f89fd7e991b639ef870d20c53393f5edd90f926f421ee6068185c9d. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:16:29Z), 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/BXRYQ2100506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fea7dce7b5d3733c55af43ff0e32092eb00b60769c5c7257b940b5f136f78b1. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:32:24Z), 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/BXRYQ2100509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1b3ddbb63096b900d87e7ab14ccc481c4742c12cebb96a08424506fe4da9081. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/BXRYQ2100700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a9369d1f132ac900f6199618f5a33024fc586e5c4debc79f3055b89203672f9. 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/BXRYQ2100707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe58db542b2c0a77b4075642d4dc3500e1197924528fd3e0e3f26eafcce92e3be. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/BRZGP0400076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb62668e7663cee98c5ed79c889e7938411b01e2a43b019544172d10dad9dc51. 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/BRZGP0400077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0da8873c21ac69eaded3ec179af7b36776d487102b8228c497931133f867327. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/BRZGP0400065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91fe15934c5af2bcfd6195c3a378cca2f9a0a45b817fbf6e1fe6ee7dd75949e5. 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/BRZGP0400068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce6b126e7d30efbbe6bc1fb96e469df98e64ffc370ec3e5da00811c3c9c5877f. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:36:16Z), 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/BRZGP0400074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67c36de5346a085f02f6fd2a2dbff4bd9a0b02f2aa21ae20602ab70fc21e3920. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/BRZGP0400093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaffd4d674968a0c201babe02305640ccf07f951cd3baa5c654e253f45fd3f08. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/BR3S51800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0038aefff7ce458832599412034fe3f9e5728f7e5ecf1bba6db2194178cc86da. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/BRSME1100822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd85313c2679949ea6a5d59492d12b0b0915c03c293ef0da07a71dc1d9b820111. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/BRSME1100824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2fc2ae49b12803b73e35c90b18a60941b45321294a1cb9e277110b781dfdbc4. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/BRRGE1504521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bffc4aceec196d08576bd1070511ed79ca138436c4b36068d2869fa5eeaa3cf. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/BRRGE1504522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x410a91f961992f874c178a2afd0cd41776abce4736241e9c51ee750dede4e54a. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/BRCGL2100040.