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 0x3a0cc4cb32b50f6fe114863c16ebee52e27bb5f5b38c721c546aa44e07ec2d62. 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/f523aeb0-8454-4bcd-84dd-6b79daf18753.json and https://artists.proofprofile.net/proofs/artist/f523aeb0-8454-4bcd-84dd-6b79daf18753.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 0x5d1c317e094fc74ed0e3ca8388f9d94ab57241bb10fda4e249e5ba9b5d8a829d. 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/QZK6L2236401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x147455bdf67c61fccfa19c1cc198834aa03e679d017697635c740eee87d64a0d. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/QZK6L2236402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcd29e314d1dc0b3a25b8b943c762fd306d17d580e1c6961bd1ca06c42721551. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:41:34Z), 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/QZK6L2236403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23973214e00358b4dd58397295a28bca833b751de7319cb36ab526fc6373a80a. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:47:11Z), 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/QZK6L2236404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09571d3abdee882899c86e4576f7bb4d4e79e4803b8fadcceb1a2e55baf0767b. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/QZK6L2236408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0099f7bf5ba51782185580363eb9ccd41ac28edfcfa8b9b8bb088aebb20328be. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/QZK6L2236410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1b94a1a6b3c8867bb81328e972b0fa8abc4f881c461af2024fb0968ef7a57fb. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZK6L2236411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb31faf40aca1b07c42b23d0171ee5fb2efafc8f86c38dc6c893302dbdc6e809. 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/QZK6L2236414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e16f4868ffa4641f9a25b386fbc4343b7c62fa0843ca1e298c51a451c40beee. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/QZK6M2220288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8df3c321b34e6ef16d682ca7fe095abacb7e8d0efdeb8261b131ee5cc07f76f. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/QZK6M2220289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x885d33affb11f9346b279ba060103496db08418e7328775f0cbb271b9bdc439b. 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/QZK6M2220290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8153500a12838a80dd9cc3245e5e9628117cf192f61a201ed19f3dfab7883746. 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/QZK6M2220291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9025b0d63d6a42cb8f0b82173d6f294b15bc36859c1326ea28da6365cdcf0490. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:45:22Z), 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/QZK6M2220292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f85f766286c8ebc73ecbc75e8f293674e119374bf53c8c7eade201ab0fa810d. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:10:06Z), 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/QZK6M2220293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x465ddeec2ec3f866d565d425134f783e399c0d965ac664e3d484e43d73a2e783. 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/QZK6M2220294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x384d4566944eaef71f55fa04921313d71abd88afb32704bb65adc49ab589fe64. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T22:43:32Z), 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/QZK6M2220295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94787573a20f7d1b524bbea605b16ba83ebf5605be5d9160293dec5600fe1534. 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/QZK6M2220297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb89ed9cc58ad744714024190656b1bf8fce471f75af7365db021a4c285dc06ce. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:51:24Z), 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/QZK6M2220298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f0876ab8f92ecfce8942c98311f2be86a8cf4952afbf30cb28a9f46f4dbc1b0. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZK6M2220299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6a9c0d722887c0b9e8506e897b88b89750e759c218d39bec21567424d1d8cb6. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZK6M2220300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7df92451015675d08c75fcec750d6bf8bb4870d9ae76daae13c37840466e9dd. 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/QZNWV2201396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x049fbbdd06c2eea41b4b5d771824b73c889a062df607258099f3c20b52395ff0. Chain 2 (Bitcoin): anchored in block 957663 (2026-07-12T05:58:46Z), 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/QZNWV2201397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb58dcff7d9c5f0d51c50153bde59317c238779ed913ade4a6b9d88da16471172. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:43:16Z), 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/QZNWV2201398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80e03fb3810b69f503ee1fefa77dc4a50ff50b474563be2eb3963f19482adde1. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:42:30Z), 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/QZNWV2201402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x905b5b39380353fc61c1f3ea937b6f399df32743f8cb3cb2fb7197677e026510. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T15:40:43Z), 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/QZNWV2201403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24315e759e0611824f336472a9f94316da373281e08f29784ebe678837121896. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/QZNWV2201404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x698e1b7fe0b4e1adc92cf28971d8cdb962edc293bb8a2fec57203f8d3c52f4e6. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:08:34Z), 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/QZNWV2201405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ef941ac71b9a5ae9d70887938cc240955d3db5603f790f32701fef2804318e1. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/QZNWV2201406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b958afe5b9803352a6bd22da9ed0c462f72b5dfd8f30e292edf7d7e028057c1. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZHN52386997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fc429d08e75cced9e09256248d4a84465803092ba21f16e43453e2045f31a28. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QZHN52387000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb6e26c205595e34799180baba3f0a8efe8299107e0931391d02cb6b1421e1e6. 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/QZHN52387001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x308e1e9628e2b6c68b126258a33dfa5d2a800ba1834047301c1c9b5a215b2585. 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/QZHN52387003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8a199f4a86aaa4ec8243bcc139c291a2bc2842a78153b724bd98d5cc8b95cb8. 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/QZHN52387004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d1d1b39f0e1ad3aab9845e177eca0573cb971c3d3ad59352088dc940a18122e. 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/QZTB22449340.