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 0x42fb255399f7a6776e16d051590840455a3a826dfe3e56f3a67b465b1b784644. 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/b94648b6-38c9-45b8-bf41-d7b6e9682d17.json and https://artists.proofprofile.net/proofs/artist/b94648b6-38c9-45b8-bf41-d7b6e9682d17.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 0x8c97cf5cccbe14337b5742142c31a1e7b48c6398fb1d88d377c3b25d6f84a543. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/UKXN22370183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83a29db8f7c358b8a00ac88371f8bd0fe84c8710a1c01670e5f89e4d9a5d2631. 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/GBLFP2455084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x242610d2dd0b8895c9827191a7b3c70947edb5f4d86ee623a16328e08a81db0f. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/GBLFP2455085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bb69bd9ae7f626e72f014ae3f0b00ce0994d0ed79a92953d464f8f96dea6fd6. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GBLFP2455086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f337d95f51e85dc9559276c8cbff81f747f9247859aca1ad249b24680e01376. 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/GBLFP2455088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a5686fb5e19f16db16a8abdbf63145a2ee04cf7459fb6b0f0f53347ebe757e6. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/GBLFP2455089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aa33978cf0840403f6ca3f9454acca3ecef5bf48fb1806f25f680e39f2bfcc2. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/GBLFP2455090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x670058a8411b3c43faac3855714b79d900ed9242f51346810cb57f6628670a1b. 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/UKXN22310693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc5149bb0994c5c6235a7b558c18e926304ba7189a023de73729498e347499a9. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:21:23Z), 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/UKXN22310695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x776ebe2e1f5f504648a25d4f4f9b4b04c401ec47009ff0cb729367f1711ae81e. Chain 2 (Bitcoin): anchored in block 958130 (2026-07-15T11:21:58Z), 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/UKXN22310697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17e54951c73dc21ddba799789cad9a5011d90feb8c94e0a72a6d76f4a5f18b93. 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/UKXN22310698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb40877f082d144214299a9ef1b532cba1976df824fe8dc76c1f2f5e03fa99dc0. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/UKXN22310700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dea65b84cc0d1a4027ac5e8a7a21fce840c5c8e58cb153bad194155f1e81188. 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/UKXN22310703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b322778520626dd66e95b867c4e3c4d9d15bc7b455b6d7d1ca552a51827fcae. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/PECR22501223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd605bf8ea1b87341e5efc9ebbb1c304a3796c42ea2d8460d00ea91e76f49223b. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/PECR22501729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1af0c2f9984801b77a2abd403cc26b2eb7724fe89ad5de57a1e073cbd515244f. 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/QZTVM2564938.