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 0xfdb60b6b8a4aa25d127aef227d0d74c36c315bf93b1f03b98a99f707493a7293. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c9d6d1a8-bb92-4779-ae30-118733eacde8.json and https://artists.proofprofile.net/proofs/artist/c9d6d1a8-bb92-4779-ae30-118733eacde8.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 0x35289069e5f1222b3d887854df4f18ad31c0f18fc51f4e431aabfcc1f475281a. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T22:13:07Z), 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/GB8KE2210863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ba2a9d90088d92518d57f68cc43c386f821f9cbd5a6392739db9d3dcc4cc0de. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/GB8KE2211096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee3a2602c980a02c5a11966fd747226ae230442373847fb6d422542589c35ddf. 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/GB8KE2318977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x198c00992d98991232d5db59ec94638104fd02f821953383fb5979184e90d0a7. 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/GB8KE2325409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6af78d2baeec0022eb85e11498e3818029a04c77effb153fa9e86f0575a2bb02. 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/GB8KE2328150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48b492fb12fba5b06860fd6aededb8715c188e07346f571432fb003d74e2983d. 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/GB8KE2328839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb315f3054ffa61bf436fb0153f020608a9c7d5e9583933fdee8639c501e3196e. 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/GB8KE2424233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41b721a8d4cb259588cfbf243cc086445bf7cc3faf683fcbb6badd727294a243. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T22:59:47Z), 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/GB8KE2428472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aeee832b468e5f1e53da2b003a5197e90371277da27f2e3aa0a8b749c6984b3. 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/GB8KE2429214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c11ff0ee74a067a1aa8f67940198d86631319be90d5284d850480717fefe916. 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/GB8KE2503031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbf1ebf05bad2e123f3d0458e73e9eb92969b5de01f5e08fb52e0a9f78e34bc4. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/GB8KE2503639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bf4d1a8eca5593ac45d22aa07ea74e92d6df3173b8a9dfb911e74453de2bba7. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/GB8KE2504615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dae3711ca4ecb8ed02aa5e17cb9c2e68a2a4edea400792ef6cdf9b753c16c49. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/GB8KE2521366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e21355412531d0e178e61cd1c723cbfb31b4cbe5b726ab45d5ccdac2b37400d. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/GB8KE2523261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25b6128eb456e2fb9b94f1ee30aa37480df99150aee982db1125b17a37b9b4b1. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/GB8KE2523456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb84b88df71764455492c7a15b482c2f926e300831e376057290f98126fe5cf43. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:56:27Z), 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/GB8KE2525021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7bcc964a57421edfec51b3ad5674f30d9da01b4be61aad0eab469832ad07d5d. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GB8KE2527661.