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 0xfbfbf4f6a4f1717df4704485f955e574a0c771479f4f4979b4a3e33e0a92ba8e. 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/eb80b73a-0a71-4268-97bb-f0c51698062e.json and https://artists.proofprofile.net/proofs/artist/eb80b73a-0a71-4268-97bb-f0c51698062e.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 0x77b5673455bfdd5a61a956155a58a8227c411ee56550905db71bc87595068645. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-21T23:27:28Z), 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/BXJ3W2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21ccc5e350e204d8341d80218a0d1cd0515518000f46ce85ca226e85eb3f8795. 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/BC0UE2100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08048df1a57a3df70bd312fcf8f8d5d46e1be0472ecfb4b070a5d99277c14169. 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/QZGLM2109329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa29a57ed534e5b3160a4379abc7678695f81f446f52647098d017e582b26f3ed. 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/QZHZ52092031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38cb20fc73c2ed77dde84354c57c65f8a7d84c1d00fb0064eb3a6a475ae5d38d. 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/QZHZ42256847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xade309829b3ea48cb509da49f03a091094df51fcc26e6e06281e318770f01b6e. 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/BC0UE2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa93ba6410c1628e25ce1be3127a60bd8120e10da5d4a97905ae6b2b663bb5b7. 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/BC0UE2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x170980f78caa9a107b21b581650d09def53c8f6f84761deb9f4b2e86ad750663. 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/BCEOG2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe87e22b4cdd77adebe31797e8f7163f708f6620af83b4826db06ff515c02a177. 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/QZHZ42237162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x466a8826173fd94174a15d9bf9bd73a654faa7c8f00b95fb5afca3d2b05a760b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BC0UE2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75603910c94ceee3b94983233df0c61d57df7ef086a553647974ca2adbff55dd. 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/BC0UE2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33975585064587b0ca67c55227e77a3cc25176ea2b0116ba19bec3d06cbc525b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BCEOG2100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x682fd75d4169799cd47ebd9abbc8971f558a5ab4e0110cbdfb182cda0e343145. 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/BC0UE2100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d8a31aa87047078e1c2e2a3874de85e666e0d153c1033166fbf1508b4ac6afc. 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/BXAML2100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12f2b5e4bb258ad8051a8d07790670b3f456824ec92c51e6f23441a78f77dea8. 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/BX0VX2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97f4954dbb9342e3dbbed32fc92184c9c4800ceb7b13b19cab6045a1fbd27bc3. 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/BX0VX2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3b962faf31919cef3718f67127da712e1cfe9d6f1ac46e21c2af9048efc29bb. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZNJX2067511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77b5673455bfdd5a61a956155a58a8227c411ee56550905db71bc87595068645. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/BXJ3W2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x812d77c8367107d6e0df4eb0f305f55b2d4c4637a475f6059966e99c59940154. 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/BXJ3W2200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fe3d669c4f11f08bce0ae427cb54b56f5bf3392f6cdeb36279c9d5cfc65674c. 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/BXJ3W2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e85b1351ce443a9d34f5c71ddc662e3d503405de11900f8b8c6b67302205c01. 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/BXJ3W2200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98a0111c505329bb173cc08e52428c4451e1df68a73a6f690a67ecd37b0b2feb. 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/BXJ3W2200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf374921048b0a9e4792e1e26d1acfe09e31108048e97d5dd78183ab5ea77e950. 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/BXDPK2100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06241025038302ce9806191df3148431a143588e1768994ed72aa9f76f7b0f58. 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/QZNJX2028982.