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 0xfc3587e8a44802133b2fa332ea32501e0c71adf4e2a1f6e7529b6f8155a756c3. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/22aae6a5-94fb-4545-b547-62855480d193.json and https://artists.proofprofile.net/proofs/artist/22aae6a5-94fb-4545-b547-62855480d193.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 0x4fed407e7f3fce7ec8a386d0b0cd2847ca63a9f8424397865323acb3dc313310. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/QZHZ42102464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6264d6af765a782fe056c843f62191997151f37e036a2dc9f915b33d3d4dfa83. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZHZ42102467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71d93c5bd443f6d9370e8293ef1e703b5b36553b0d93412cdde625543dbf53bd. 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/QZHZ42102471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16d159f40870b9c5736b76552090fee1917692eb6a222092184bb63677929428. 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/QZHZ52125111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cb440e64395783b573bd25d7d0038e2049ddcde0d877939729963a77c6a8db0. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T08:03:37Z), 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/QZHZ52125112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd08384e283ede534e26e4f6b05529a766ea3933c9a90f61a8e71fa8c150e5181. 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/QZHZ42039314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d9674c3f7aeafcb769eb9c17c38ce6d3488f15d7ec6c1ab201e67567294ecaf. 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/QZHZ42039317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d7ab0aca3f4cec822abf5a656d2cb51da2d8a88f28ce272ddc9256456e46d6d. 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/QZHZ42039318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3aa52e91778d1792b23dc1a7490b58ef84b935aaee0ae0962099deee7528ce8. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZHZ42039321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc06b2b582e99906ed4594d102c003158193c2abcdad3048437a8456f5f189b20. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZHZ42039322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b68a8b1495dc337b51968b0cda99eeceaa5b2e91ee29687b091621b0546320d. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:25:09Z), 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/QZHZ42039323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dc5a4b65e335f2806423be4cd85b6b68ceb946060231c35e853f288166abbce. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZHZ52040067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94a13f6fdf9309b19f280761ade76b670f8b70333e29d4be2688cceb2d90a27b. 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/QZHZ52040068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef77149501c790a1c7d7c37d35f2070d5ce2e641e07aad41d2cef1f29acda19d. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZHZ52040071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfebd9d6115b0992562f7384a70c3ec8c6aa9904c76fb20924b8204bb41b4ff16. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:41:15Z), 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/QZHZ52040075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76cfeba2768384463bf3b50f925696de1e0acdc9ee95953dc5470a5232384b54. 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/QZHZ52040076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f3ff6ba6c2a7cf8ccb189c28930fd317e333e2c30a75e6fc29d76b5ece7bd7d. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:41:56Z), 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/QZHZ52040078.