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 0x3cdc6acfba0e07c198578152ad91236325c37b2be089a594080665c7f78a2f74. 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/ce984215-317f-406e-87a6-8f22dd63a904.json and https://artists.proofprofile.net/proofs/artist/ce984215-317f-406e-87a6-8f22dd63a904.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 0x1b835f4d8f6aeb7168c195417d6cdbff295363c17108776758b845f93d1ceddb. 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/FRX201771570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x482cc30a832e5edffe41e25e6defc3d85f0c3fb40c0e2835e87b7d803bbf30ea. 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/FR10S1775422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59bf1ec2d52dcba04f6663c22b30515030a34358f1cba3896916268d65ec5a66. Chain 2 (Bitcoin): anchored in block 959071 (2026-07-21T22:56:27Z), 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/FR10S1775425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb03f666c1aca34f1c34574c0f6743b1bb15e6dcc31be78cb2117437a678e2c18. 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/FR10S1775428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2405f20fa13459693995b56f86263c478ea4ae44adcd7b78d8538c37266ba373. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/FR10S1775409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e2a3bba8add7afd678a927a181249b175d945a3523335f96b909c8c243d12c2. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/FR10S1775410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x241f728db6c28521d0c5203d6b18d450ffe842ba89074972d8e9c7689f94b3d0. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FR10S1775412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02df0912c1b89606bb7f4f3d93a5776dc1526a00f307d2b085b85f10cf29e807. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/FR10S1775414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1c640accd4ad7ce7ea2e45f8c43ff52d2c7889b20194a38c2feb1483e2e22f3. 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/FRX201772910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x091e24e7d15c2d837804666727c2fd68f952e12be835472348916405441db49e. 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/FR2X41664761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4198cc543b697ae4227f8b123a0c7b1b435bc16c248d6dfd21bd0c872206da6f. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:07:40Z), 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/FRX201748818.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x550140542324c5a4432820c08e0abef43fd24c9dc0b07c8eea9cfa9845d5b2e6. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/FR59R1835328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26f11d32facfae20605c2f630a569592c3e0e060bb0531af522f09a17c49fefa. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:22:09Z), 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/FR10S2049380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df94e1d8f5882c874beaf6fae30ca906aae2e275809da3efb218638268f9b02. 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/FR2X42061191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0506518987f79c58f313089b5fc7a80d540f1fc80dca38fd1227d76c87525ab0. 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/FRX872198512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60c3c55c7f3cc05d7cf5eee786d8f8882c281b6421013152d25efc9866cc2cc7. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/DGA052397801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cbdac56568d5720094e1a20384ff304d726999dd553c36507815f32fed8392f. 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/DGA0Q2321186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92b0e441d5613922021dc74163db8f9a1003f14d8c7505ad02f14d972c8e649b. Chain 2 (Bitcoin): anchored in block 957647 (2026-07-12T03:57:41Z), 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/FR10S2422172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f7f6fc184ccf353b42f6cfad99fc21448e194d36fc6fcf3b50e76a0a007e92d. 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/FR59R2426838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3bf51b784c9bdb6c1b4ecaf6822ca593fe882aae18fc4cca5709f06eb92fd46. 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/DGA0L2405284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe87371e9566a92aec4db3bdfea30482a41428cca6969ff7e7a1d63ad8972b576. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:31:48Z), 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/DGA0Q2416573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdab59d4a0b1d4647dc075727c53f2affae8b862a04eef6f6b0bf629d1169746. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/DGA0Q2483012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96665a9b14c8cc43e0db5ccd667e0c87c59f4e636d464a3358161a7dac227986. 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/DGA0R2453444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x124a9aa94bdc7ff859f2522d8a3d7171c771e063a7e7703f4e7bcd8fb6ded59b. 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/DGA0S2481513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa918a88cd42e97c5077f006cd8ab204bc97fe30328a1a2a90aa8d01b2f174bcb. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:58:16Z), 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/DGA0T2430101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb993f0c3241e97dc0d6b07b36f3e1c8765b832d52fd26b44b7dc91daf14d3966. Chain 2 (Bitcoin): anchored in block 958691 (2026-07-19T07:19:31Z), 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/DGA0T2458910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fa52083c77858e2904450d3e10b8caede84c2439da42acd022613fab3211605. Chain 2 (Bitcoin): anchored in block 957653 (2026-07-12T04:35:02Z), 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/FR2X42563739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x249feeb134f8d1279defdacae7abfc2c943b0a9a7332feadf6f338952d20b60b. 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/FRX282570635.