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 0x12463ee15ec274a6b38a2dd177b911d28a415b267f2bbc64ddbf1b9071f01268. 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/680c8035-5d40-4804-b363-e6ea9f002e4c.json and https://artists.proofprofile.net/proofs/artist/680c8035-5d40-4804-b363-e6ea9f002e4c.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 0x03cfd91857ec618af7f3f98cf92b93ebc16812b041f770040d8f2c5e793f4e2d. 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/QZES52274474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03cfd91857ec618af7f3f98cf92b93ebc16812b041f770040d8f2c5e793f4e2d. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/QZES52274474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c5a5f9dbb2ff14879a915e4d3f7600af9bad21b836779bcc3a9edbad2060224. 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/QZHN42224283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe07d3d3c77d75efa15d43341a20047ea0b7b8a90fa2bdb73d3652ed193d6c642. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:51:59Z), 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/QZHN52345521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f19810b41b9bc1fdaf79c7c3d23545bc43b8224fbb22ec60ce1646ad2bc47aa. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZWFG2305226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02ffc05bd269bafc6a6a7ebce7c551c28aa6bba87060d34800f0dd0981812053. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/QZWFG2305227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55e19fa88fca4803b216867c34ab0b0894a4c0691eb66ef7eb1e53498715b5f3. 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/QZWFG2305229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9248d6dc04ad07aecb956fda93ebbedfb525081632d89ee6f6be81c3af034572. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:38:11Z), 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/QZWFG2305232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4755af02cc78511c0c2d8948cbb9098b25808dd03582fa22c93b675dbbd3652b. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/QZHN92334864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8790fc742ecf4868bb4fd582243138e8f359dd001bbbd31d14346dc93a580d96. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:54:42Z), 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/QZWFG2305234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9011cc1442467d5c925fe6306e1ea17301e04c92cee03d268738de0f5d25436. 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/QZES62483968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4ec9d5fa76310303a76d9ad7605d6f5a57e90121bf3ec29389ca9f932c229c2. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZDA72412858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb6902ba7aa8ed93daa99c480c56d94b35212ef7d4bc03599c5d4b0c37dcbac3. 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/QZES62483969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88e29a79232e9cdae6ca8d4c820943e595f9c5b119717338dafeaaaf1c796be3. 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/QZES62483972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x042f5e1417dfdf7470d739f72ce7fe385801a02ae5c6c031e8b4bba7caa2ed1a. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:48:57Z), 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/QZWFL2467446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x702e8c442f982974bfb01b9f36f91f3827f1d10e853ab6504fdb903634678adb. 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/QZWFL2467447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf48136584e8d83c1be397408aab078a9f22c4d2e4d67c22a440fe8f3aa19c3c5. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:32:27Z), 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/QZWFL2467448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6345ba60c398a23875ad7ac494757c630e0a2a34f1f0d89beb99ff6220ed6536. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:11:35Z), 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/QZWFL2467449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f26d73eb205dc5f36c7e5458c59bde2b3d8c147abbb3843f22b1e797b8c4b17. 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/QZWFL2467451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35984bdb5e8ce7835cc9965546705eeee152ae2931bd8c1e201bc856de8df8ef. 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/QZMEP2359817.