1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x85372d7d7c04bd9e7b14920c8be5f78477b79885279842fcd970b8830f282123. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cfe9d668-f8f7-4159-96d0-6eaf5b652e14.json and https://artists.proofprofile.net/proofs/artist/cfe9d668-f8f7-4159-96d0-6eaf5b652e14.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 → block OTSBitcoinBlock must exist at that height 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 0xca71a75784df41b5afa9f8c9b56e451b821792b935246ad167db1b73ba15be04. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DELK22000356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c54a83b9ce5185777759d67e7b239a16b422de215d7234eecf03332ac177177. 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/DELK22000510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf56447ecf66dc09faaf4be6103838258d3e7be7dc217e841999aa529c7ca4b21. 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/DELK22000488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2c0e4a91634a54e9c318ac8a9065a4ece3871e078f2602bf894b183b33adfec. 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/DELK21800189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d92d21598e162915c008e1a1afbccf348658864bc18e9a220fb5e5e2581f810. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DELK21800190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff7332f529ccd377cbda832821a90319ad43d57948d07d15d966577e328ddab3. 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/DELK21800195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df01dba89c68d88565d609db8548346cc1528a188b13b8f6313af9309f553d2. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DELK22100322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd589a8ccad0570ab382e35e93d9bbaab69d8b28ee6a8457829895e455ad6c981. 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/DELK22000508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c54a83b9ce5185777759d67e7b239a16b422de215d7234eecf03332ac177177. 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/DELK22000510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca71a75784df41b5afa9f8c9b56e451b821792b935246ad167db1b73ba15be04. 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/DELK22000356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x369ba31e816950fe881dd8c281caaefe6c79cb0618fd8cdcdf63b36570e9ec7f. 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/DELK22000511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf56447ecf66dc09faaf4be6103838258d3e7be7dc217e841999aa529c7ca4b21. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DELK22000488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca71a75784df41b5afa9f8c9b56e451b821792b935246ad167db1b73ba15be04. 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/DELK22000356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff7332f529ccd377cbda832821a90319ad43d57948d07d15d966577e328ddab3. 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/DELK21800195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92752993c461fc7c6d7c7c505c5d61df5d492db010628e9d24f3456fce8625e5. 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/SE5A41600601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3231688cfd9b3dc7dc0518fa51d83ac1fee7463d480db60d2e63d57bc161150. 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/GBSMU1723903.