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 0xbf67efbe3a7661a996befe5516439826c8d3051197df53a16f0ea26776abe2cf. 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/8c4675cf-0dab-4d2d-92e6-efb2f05c7bd5.json and https://artists.proofprofile.net/proofs/artist/8c4675cf-0dab-4d2d-92e6-efb2f05c7bd5.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 0x5308342c4107ea97f825f0ab7ca5d0f21a83a9c49090ad7a69f83e7d44ccbe9a. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:50:38Z), 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/TCAEX2029865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x342bb88a7ff02de122b3fba5255e67e52bad27a54180d6ed2cd142dfe237c148. 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/TCAFS2141003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bb697ee5c8bf7ce0b7ce63d142c71eda1274b738384856995607b89de84a41a. 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/TCAFS2141163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8e96d633f3b8a29d80bca8ef3c69ec3ea6a594eb6e1773597e15f8c0d25863e. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:11:19Z), 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/TCAGK2214317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aa4c194f1d0176c657807f6e6bfab1529f33856572b64ab99b40efb0fd44391. 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/TCAHC2312101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed34a2916978d38c31afbb0a0a9ee499c1f0d38357ec254b693223bff9e4da1a. 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/TCAHC2312111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c9fd5bb1ab3a007c707c7c8ba769fa2f00f7b1f1245d793419e104a6e1c0ae1. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:38:06Z), 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/TCAHC2312315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b508f7fdaa9a4a60c5853fe653ca462ab1f288c02d92eb5e0ef5ecbc25f6a32. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCAHF2306869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe24c44358717661e71dc9ddc4bd053fa783bdc0c1cdb0823c968146e465f5e5. 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/TCAHF2306872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x624554d6cd7072ba051670455f34e9926b4695cd3429e5db79ec33628edd3694. 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/TCAHF2306896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2278319a7482036c1fcef541903291e7b5a9b5ab806682512638c643c728e0c4. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:16:17Z), 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/TCAHP2349203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28f14918d4705798aac37855dee6a6a47c44252ea9c50f29acb5bafb3ae02506. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/TCAHP2350696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff5bcb8f2f09510cff0ede35889752ebece06baed0c2488eae59af954036e623. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/TCAHS2305897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x316daec7daa78446fc293fb8e47646f4ebc4930e01c5e9b9cdb4e5992afa5dec. 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/TCAHS2306060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0946acb475d7bc947b212463dc03e6db7e6c03ef383c9dfae512e282c396d6ef. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/TCAIF2487415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae817a048da6a41da9656f364079da9f0da1c3fe759964420c84b1a71ff4daab. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/TCAIF2487426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb847667bece5ac4706b4d52f4986f1cfa36f68628e1f3b3ac3b63a7a395c37b7. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/TCAIF2487482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2193156d9e2a16a8b5068b8d9678008be55c08ea0b9b14cc4b002e454cc0941a. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/TCAIM2433307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7db850c6cb54c5e28f5f064fbe06025fd3a385c7eb3d0bb41ee0548a2308a10. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/TCAIM2433320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74a4c8994e0796b66581719bdcc95b3fc64ff87b7b4c87b6009e4f8890f955fe. 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/TCAIM2433323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf71dbce7acdcf3cea3ef0059aba16afe6ce1f07b8bb4113abe02aeac0ba1568c. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/TCAIL2433383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15c20ec4929e98d97e3753ae1ac649184cdf30bbbca199c22d9d31adde9ee250. 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/TCAIO2461989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5267202a03e9b990efaa94002e9dd54cf02bce04106a029a0b60495393f2960. 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/TCAIN2461999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa54ff06b6e2b72f59e3c740610297f5a829de9d4d180633b64bb6b6743319c7a. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T13:22:35Z), 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/TCAIN2462001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf06682f5a1fad412bec0c35295ea4dd6e38a5dd25687b88fe6326f445fca9d8e. 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/TCAIN2462313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88d9de54ac0c2a50682a48f5e49ea7c86ca23cfc49289c1cf903ee48da23efc1. 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/TCAIW2434625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1869bb5c5e9b59b7ce9efe4e8943185fffadc3248f699280ccebe4baee122e51. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCAJE2473212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab0499803d80a9b4dd7ee86d91b0fe0f8254fc459ccf174ce04dea10763858d7. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/TCAJD2473225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe39e7d2ca944e35ce0d84302cb8c6471bbfdde698325058e97ba2e335f4664c8. Chain 2 (Bitcoin): anchored in block 957544 (2026-07-11T09:08:48Z), 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/TCAJD2473229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3691e729200cc3a2614f571fa2f761ec83dc178201499480a9c04c6218a678f3. 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/TCAJD2473233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67fae8e3e8a193466dd92e3d440951e6691927ea5abdcbf2030d4c89b0f67536. 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/TCAJD2473243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbee19492f62a98fbd36adaf70f865b0e562ac211082c0bcb6c8e5e11e47e8c08. 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/TCAJS2555198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c6947f98cfe0a9f08f0b1bc3cdd3d7991da80fcdd5eab7da593709558dbddb4. 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/TCAJS2555405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6116326f73e07705521bc0fbb47d7a29a546598f92d279ee78676b8fb6712e86. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/TCAJS2555278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d617b0004bfc23b38b47a3e650c4fa4a82b505710680431568a799efdb5fbc2. 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/TCAJX2500554.