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 0x2df753a9104f56a6d1544845003751179ae06aee91680a04a690e535e47e820b. Chain 2 (Bitcoin): anchored in block 954659 (2026-06-21T06:14:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dbcba439-8714-46ab-85b5-3e3a5014ca59.json and https://artists.proofprofile.net/proofs/artist/dbcba439-8714-46ab-85b5-3e3a5014ca59.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 0xd2a2f6de985736ede39b43bcb13b9d4d33ba87ff7a15f9e53cd27b3f78835c7d. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/GBYM51700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fd484e36ac27fb6c32de745880ffd0fb4a054adda0d56f4631067ca3a8092a2. 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/GBYM51700009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac4a25f8dae6302e5e42e5ffa5a4c7b5f1f4701bcef6add9e3c0cf03c9bde58b. 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/GBYM52300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eda729e0bd3095da6f64aa6dbefccf9813246f8e3d13ab5ae3830300294de12. 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/GBYM52300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3810fcb11a0506d94098b855c47525e0d12a38716df9568c9dbfbfb46696a7a4. 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/GBYM52300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb730154a9229f1e5f2d3a1992de68f309b3cb5b7f90547ad597ecfff6cbc190d. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/GBYM52300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94a387761925420ef18a791ca55bf3d2d88b9eb7b815482e05a32733911a051f. 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/GBYM52300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78251d7970b42ce4782837e338de9be5f53982c53e0df38ecd9276c2aed68d6d. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/GBYM52300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a2d9139c7b3f33f6ebd17976db74571fc39c9521dfbbb98fd1fc1301af5f38d. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/GBYM52300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac4a25f8dae6302e5e42e5ffa5a4c7b5f1f4701bcef6add9e3c0cf03c9bde58b. 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/GBYM52300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf45303437903e4ad7a30fe1918c50c0d3ac711ec108a4e90e14edfcc0160f39b. 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/UKDE22400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48571aef4d7efb0e56317782a312fda31ece7aae47e4072546a8e8fc71f80853. 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/UKDE22400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4801e352bf58baebbd075482f0e530fd6d6b2a72f1e9208c160da4d134f6b40. 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/UKDE22400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9abfb9ebeaa7ccedfae02461e6e672797e6cb500f3c28580711d85bfb2f9f34c. 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/UKDE22400001.