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 0xecb318311b6e565131af0f5fcdb84830309923320f1f6e25ad4a351949adeb44. 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/07d60713-7250-4144-b1f5-b123664f4c95.json and https://artists.proofprofile.net/proofs/artist/07d60713-7250-4144-b1f5-b123664f4c95.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 0xe3298d28723be52aae782cbd3c1c63def34835f596ab1210753696cc8d2bca94. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:34:44Z), 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/GBSMU8248764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63aa01418a625d6e9839971de6f8f0c6c7c7be48858319467ab2cfd313f0a75b. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:48:59Z), 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/GBSMU8248766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9887b7506da7f66a12434ac570dc610eb1bc76c1ded6f0a4198606222416b81b. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GBSMU5608088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9656578e36e73076c7c9914e92c688e14c67ab2c373de8254d15e8231581798. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:47:01Z), 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/GBSMU5601694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46e1c41865c9cb212172c09efd7b3c64671fc2152112a031805d69781f5b00eb. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/GBSMU5601696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26689cfc905fcb613ef2ef34142bed5ecb3130a9effc06ffa4ede69c4b913b39. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/GBSMU5601698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cf37cc1c34c62025ef23f18faf6476adec889dc8690cd3c1aa77e8f254c3c4f. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:20:20Z), 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/GBSMU5601812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd93a258bcd1bea7bf306663cd235885f1953f8a28a0d833d444da61a7351eecf. 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/GBSMU5598900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb51e04e970cb74b8c44858d612c13e42f0a38524ab2d2c3a8ebf450f8e54de35. Chain 2 (Bitcoin): anchored in block 957671 (2026-07-12T07:35:31Z), 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/GBSMU5598903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2052bc7079b0d30c268923255c2971496cb3c2656506f18601e978878060254. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GBSMU5598905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ed1d228c389c9500521049023ec3f6b7af4a2aabaed0109900b7c971fec1909. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:58:45Z), 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/GBSMU5598913.