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 0xc241f199766b32599ca1bb2be9757e68946b70ad1d2cf7ae2aa4275297cf624b. 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/012b2dca-25ad-4fa5-a1c5-3143c6eb9438.json and https://artists.proofprofile.net/proofs/artist/012b2dca-25ad-4fa5-a1c5-3143c6eb9438.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 0x71c6729f99ab1edacc740c17c953095a1d1e08b5c3dd691c608e4a14c9749227. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:43:12Z), 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/SEBGA2303976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5112ddbb3ed20418f040f50feedbb80da027011138f28a28162dae24bd4f0ee0. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/SEBGA2303977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb02052dd3c9374b859defefa697d2aeb89eaf8c23533ae11f4ab47535f660e3f. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/SEBGA2303978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc6bf14bf076648098446a795155b60708121fdf86286af9fe35b283be42b5cd. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/SEBGA2303979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd38a2e1166168f4b9177daae88d3a648d30a1a69957c9500d8753b8161d39e19. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/SEBGA2303980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7bd06a59a7066ff86c45ac86d9b91c7342d58b0883e538735d7e0e4f26602cd. 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/SEBGA2303981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ddc44c0601cc85a19ef0947845ffe92c0642267f56d38153616f20bfacf2889. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/SEBGA2303982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63a6ce979605273f778dbf16b8a72b7fc05a59bd7d64df5bd4208bcde423dc73. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/SEBGA2303983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe32d06c3da403988babb86d86df3d3f1e5976ca32eaa6a40b50a6a1fe8c17600. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/SEBGA2304754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea34f0bbb5b3f705f6abd6781219b10bb471d9f65440897da60cd2309b41dc5e. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/SEBGA2304755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79be9f2f28501c06e2a645fc676a94bbc47c62f0e65e631860d105b142fc581f. 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/SEBGA2304756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ad7c30c5abc51af2b61e437b6d7c0ebe81c5a245424c905f1f77cede35b0a24. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/SEBGA2304757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ac322a363c82e5fe27e1212403354a9df3af3e1d4e3454daee4250e7c480180. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:23:02Z), 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/SEBGA2304758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcd71427f3101e3ab6d9547993f071604757cbc590482cb354d181a634539637. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/SEBGA2304759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9dc14af145a8b2bb6edbd34d3c72151f2ababf7a6c5bca970bdc77821ecf132. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:01:22Z), 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/SEBGA2304760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58be09c43dd944ce63038023f02e2080432de1cc8512bfc1e740259d53497b5f. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:45:40Z), 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/SEBGA2304762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2ee5e917988e30d2e36392ce4fda46048b3949c0329be5781046d504e2269d8. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/SEBGA2304763.