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 0x4b721605fa3d6ae605fd350029f8304b82c86b01018ed86d98f72e559750e7e6. 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/9e9066fb-6ad3-43da-b93c-1b70150b6c63.json and https://artists.proofprofile.net/proofs/artist/9e9066fb-6ad3-43da-b93c-1b70150b6c63.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 0x93f2478669fc9aff4cfcf138fe7b7fad14d1e2ae0bd86e6e567046e369ae2db9. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/SEYOK1748485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c48d334c779c6eddb818c41afa6a1e9ddfcad7c904a03851a3cfbb588650daa. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/SEYOK1748486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec0d5b899086e3fca522923836e4625ec7ac91dc160932f4329e2fcae5ba50be. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/USSTT1900014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5488335e0e4c553974e6764b280da6cd4f868334f8523bf230f1fa3294a62fb. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/USSTT1900016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3a4627b04aa52f6c637bb04029534e2bbf4ed795bded2f94db02783aace9ab4. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/USSTT1900017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf67f576391729eade8f10cd0ca13e8cc5b5c0502801779b2c6fbe47069de5512. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QMCE71303292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf67f576391729eade8f10cd0ca13e8cc5b5c0502801779b2c6fbe47069de5512. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QMCE71303292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x074d455a963828e508266ee0756c3a4dff2ae3ca24ed425e7bf4e0c97734fae5. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/USSTT2200128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e00c01f330122ffe012d5f148344e110201775bdb58943018bcf0527640e806. 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/USSTT2200127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae12e28d55fbd7833f97e0ab95f1e01f46b753f586002bc3017708458915887c. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USSTT2200126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94c7d867da5203f9633a214919a12b4024d8ac137efc421bc1a889ec3add7ad2. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USSTT2200134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7857810cf8f6370872f5b39e83e60479bc65c0b61f7f67045712203d140b9978. 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/USSTT2200136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae12e28d55fbd7833f97e0ab95f1e01f46b753f586002bc3017708458915887c. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USSTT2200126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51f7aa3446985ac08bfcecdea740378f2bb60d9d9cc72bbea5eca31d743a1658. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/USSTT2200129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59e17d8df710517220da824441969f0359e6e304d04c15a63cffb7509f3d4f50. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:44:26Z), 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/USSTT2200130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x506643673fa9ba56c0c65788dc4c1734ff2b3434cbbb22572085698299012d77. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/USSTT2200131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2069efb273f6657ca1685e432bad4b149184c3522fa8200a5c3fb3174ffbeb06. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/USSTT2200132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc640fbf56b5eda397f6b0870cd4abd8cff61abd0b2512577a1f9d95529aafea9. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/USSTT2200133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94c7d867da5203f9633a214919a12b4024d8ac137efc421bc1a889ec3add7ad2. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USSTT2200134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7857810cf8f6370872f5b39e83e60479bc65c0b61f7f67045712203d140b9978. 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/USSTT2200136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1be677dcd1227f1ed8f08cbac9fa32cf7661eddbe095fa7bbcbd5369197a768c. 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/QZNWR2380006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf67f576391729eade8f10cd0ca13e8cc5b5c0502801779b2c6fbe47069de5512. 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/QMCE71303292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54b98a45b68cf7888165d837eee3ac7fb2295a4861b23e7c1fccfcc8b5867020. 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/QZQAY2478898.