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 0x6225711f95f3944ef2679b9887339e5ee9751f8d52f7d59e8353ce8b235b6c44. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2adf0a04-1041-4b12-8d6e-7e1b0c6ee66b.json and https://artists.proofprofile.net/proofs/artist/2adf0a04-1041-4b12-8d6e-7e1b0c6ee66b.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 0x71794b51c9270be1127485e4bf28611d615c2259a6ea908e0a598846e4136130. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBSMU5388862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66a9075bd3313aec84004089d7dd8ec0cdecc7f013bad5cf0888490137dc005b. 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/GBSMU5388863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7596b3d79a26508900b58618d7196a943bef63f5feea0260703f8668d67ca84e. 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/GBSMU5388864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fb409a8c2573cc72dea093f0d8d8ad79be36e71e3788725f73fb6eead7226c0. 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/GBSMU5388865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec00ba2bd335d6dec87181805c125406ba0fac84a96bfbe54295e72fd7993678. 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/GBSMU5388866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f09b508e1400838f244d64630570441a914e399a2617471b4e2902c76bae2ac. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/GBSMU5388867.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77435224f3f956a4724323338abb04cd72af4c7470d597e269e3a2a5033f3dcb. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/GBSMU5388871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f69851cfd642ce680a698048650a0323ab0e2fd1ece346dc550d31f3a7379fc. 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/QZGLM1979655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3379f8f489fb3dd8494fc6bb17edf8d74a55a4168fead665f476772bd1bbba8d. 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/QZGLM1979656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2ecb2fe43afd7616cbd24f6afbcd33a11db1d5111a897bd94ee1b1aa2f888f6. 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/QZGLM1979659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3c7cf737a17b7aa2e5c3573783429376e18503d90e2cbe038909c56d4a5d754. 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/QZGLM1979664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95e7cdee2a7b711bef5b6ceee0189167fc45d3596b13a3132f8f37f540e75bf2. 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/BRBOP1902209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x237d4d5cdb12603dae22348aa57d0a52a40bdbb9fae1a277fbdd7fc3272e3178. 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/BRBOP1902210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bf8f3989127b7ed924ae402ee36e6728972f76c0206eda78590cf5294c037ba. 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/BRBOP1902211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bbdc55f455a3939f80e131bf805a4897762c9f183931b20419ed517d12696bd. 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/BRBOP1902213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50ee0014745d6a0caf85893e062dbf99769864473ff8717745575aa0c72516cb. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/BRBOP1902207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x103e47645a3b113ce854db19de15019fbe9853b601bcc8af898f6548cdd96263. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/BRBOP1902208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x239beb5bb71969d1488922697ffb0b3c44d04b557dd85958791a19c2985d2bb0. Chain 2 (Bitcoin): anchored in block 960157 (2026-07-29T22:12:10Z), 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/BRBOP1902212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x467fa9194d1b7c40c528fe369e8a7a648c6fb1fa1ebb20dea7d3e206a708231d. 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/QZTPX2271740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd3ee64740cf4909801cc541666ff17801956254ed8c171fcee109a0432165dc. 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/QZTPX2272195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe46ee97b18f99420fc23e5997ea49a953b690d666e28a0e760d9deae78134a45. 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/QZMZ92035226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4ba80495ca1748cec0544309a22b0b797f484c4ab62434d66f6c37dc866322e. 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/QZGLM1979819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9972accd0caecd1863edb2d2bb52deb13d17e568c6eb046f41e324b0cf47646a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZGLM1979820.
Punk for the Gospel Benefit Compilation, Volume 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d2f7cadab73f7c145af90f99ddc4e33b4d7f5176839242dd79bb509aad3f4d2. 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/GBSMU4207029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16839aaf586682110af81068cdcc73a548252d8077cbc124dc78745cd7587614. 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/GBSMU4207030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdf9543e8136726ff3a77bc2974ce9dc0a9b6ceff04d9339475b0978c1e14412. 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/GBSMU4207035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dd3471d8717f9d31aaa674efddeb393eb88a6a78149ba164bcbbd1088618edf. 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/GBSMU4207122.