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 0xacd062e753ab8343b05dfad46af3e36a921cd8216b6d937ed461d87f4258db12. 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/addcbfc5-324d-4668-bf39-f89a74e5ffd6.json and https://artists.proofprofile.net/proofs/artist/addcbfc5-324d-4668-bf39-f89a74e5ffd6.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 0x557351358fdc31fd0b811fd3ab86011dd01381a4396baaf3983bd6f6430a3f7c. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/BXIV82345551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1613e4884b47dad0305e2ac77388a13e1d3f788e6b1f84b2cf5e37dcfc64c8d0. 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/BXIV82368761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80786bf28782b7ce36c719ea082aba6e8288e5671bcc3561060c8c58ef517965. 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/BXIV82334879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c19d17c49c368a669b411db2bcf68e3a63a9e4f049ed66015b70c9f9be8c1b7. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:45:16Z), 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/BXIV82325484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad221786265044f9beae6afbe4242e07146cb98b836dc2ba8bd236e8a08822b6. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:00:34Z), 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/BXIV82378243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x373cea4b995361fd38e80bd58dd48a8d19373a977edb4d25ffbac9454748022b. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/BXIV82346206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96d733a6e0f269a15228fa38b9669e0405ffe4772e825a0b2db25d2a5fc670e0. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/BXIV82323821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9adcbde2e866c47aeee651856761c12bae9de2cb77cdfbb1af7a956b6cdb72e4. 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/BXIV82321600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7b1e2603ef8d23aa9b8fbb99bd9494428dbbb64da69335cfdf72fe1ad10dee4. 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/BXIV82488998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04825d8b67c427c96bf72c7ddbc29adb7ee458b0d6947ca077a29e033a83add1. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/BXIV82418836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c7e2de8187be5a8628abfa2bce1f520c90f5cc5b43b566b90b21d1ed7c91556. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/BXIV82448775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03c0f63189f52ce6d877861f8a88e26ecc8cc708006cedb0e8e82b1e7183beba. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/BXIV82429577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76dbd22a84b4d483592351a3cb866599ffe8b20b56625e6af7f5184d70f1cafd. 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/BXIV82415630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79b55f0cb4b9d959423f05b5788f147238b43393c41783ed1a5115af55ce629e. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/BXIV82457997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9866c21a25fa283571defca489ff20e0c64f713aa7571f2b4d4ff0c5e569e736. 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/BXIV82420466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa88b23911a41e8c4bcf5f96b3bc8e0d15f24d9868eedaee624d9b09e5f9767e8. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/BXIV82446787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcad7f7d7ae603ece39c0b9e3926a533864c99e364483371327278617d75039bd. 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/BXIV82452883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcac03a73d5bda55d9fd36db1cb6e55a1a0fe1164a33dd829510fd96a305ef900. 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/BXIV82451260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1a2339225b25efa607450a3285256586e802606e881df8ddf304a0678f88f27. 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/BXIV82450692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x376b5e534099e95efbcf40e8ff3de3e58ad3f1031269269f473b2d4910b838a3. Chain 2 (Bitcoin): anchored in block 958590 (2026-07-18T17:28:56Z), 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/BC6M22507118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fa18f386399fc59b8509175e68d4bb48031c71bf625ab16440e98d4f730f226. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/BC6M22507117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f3ecb8302363ae654de3a7c76242fee6c674dcc93bb7cfaa6c7b596db66ee47. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/BC6M22521091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85b2a320f4ef1de72006a4f05d14af76c096dc34c12a25b3b28ce6c739db7b5e. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:19:22Z), 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/BC6M22521150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d213e1e4a15598d27abbb48d0514643c95c77d5ad4053fe175985947b04660c. 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/BC6M22521202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa88dc889c7ffe5e100342fbb43522ecd96841f4eb85e1d8ae57c35893459c89a. 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/BC6M22521247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b3592f89bcbbc355da958fd63c1e626f959e38a98cb56ba5e9bf237626f3d7b. 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/BC6M22599562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00c3a000cb0daa4db1897f64bd807116cec9803223b4b27cad8e1d5b86c6d699. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:47:55Z), 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/BC6M22526880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d720e8350f38e211e0fda3e997d8439d90f4f2232b3719c13c69f4c46531eea. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:17:32Z), 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/BC6M22527182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe86b567bcbac8843c74a05e228b5af473962bffda858ad5941501f7e9a931c8f. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/BC6M22526431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1528b032714f36c99b7d49606906b22a68aa403aa7ce67b90c7ee9ab32618df4. 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/BC6M22526862.