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 0x184472a3a3e7a849a413af797655a5c3176d4d44199c59a8eac0bc6452317f25. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ef3f3365-5641-498f-b743-0d520a5c39d1.json and https://artists.proofprofile.net/proofs/artist/ef3f3365-5641-498f-b743-0d520a5c39d1.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 0x7783b93cb1a56727cbb2a6aeeb8504eb0c8ba82c6427026ab0daf8ce9c483d60. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZHN82112825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x612810cb895a646b5ce4f3816bbce3bec429bfc3e1adf1d9fe606a26262bed90. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/ATEK02277109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe71678a91d879c667763c8ed23fd5527fee00f0222b307bcba57c704444607c1. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/ATEK02277111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa303a11d06545545faa851f722f44579c42c633afc2e4227e83657a29088c923. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ATEK02277511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe59cd1457bf7ec568c415203949e24b06b99d5d0111792ff2cebb9950d5eb87. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/ATEK02277539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x648582e524e04c37033e3a956408b520b02f65997aa8f7b875fbb47730bb36a6. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/ATEK02277673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x721b4644278a190e244fc2d5341372a2c9454564a2eb1b8579f9a8e4defa40f1. 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/ATEK02277675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x242b8a93d2cab146f03b8f4af153b39df525c6e8cd2474b87b679452323e3694. 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/ATEK02377069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3515160807c3d4d6273d3b35088ee461164646d0ac17886069267fc2e03c2f94. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ATEK02377068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc63638b7262f402e080bce5ea5e13536258d4f79eaa37d7468f96e624e09beba. 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/FR96X2445031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b415f3bf2abb6db7b5d960da5eafdb255e9a02ccbc2556a7d02243c0ccd4dc5. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:15:07Z), 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/FRX202479308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a7236991a14d90ca8dfb5d12a1ed803f7d3ad40b40aeb7075bd3ce17ea163cd. 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/ATEK02477079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27973c4beb64ba347cd4fe05d314a0c0be61aabd4e611de6ba74166cecab10b1. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:51:42Z), 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/ATEK02477095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c770b629dfaf30a669cc30ee39923248b75306113cf2e654d07dda693f34643. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:06:00Z), 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/ATEK02477096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84d8d89b5cc52afd0315861dacdeb15148e6b86935592d888ef954ad05916b7d. 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/ATEK02477097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1254def9c804d87659abffb3b27e0b029052cc3ac7e9cbf6ae7ad7765741906e. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/DEZC62571032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x952e017d6b1c84002a48184f0277a7d552a8eb00a70996c00747a81cf216095c. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/DEZC62502080.