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 0xa098436b0a7a8a05d87d2ab6f48ca0cf932bbf17f9bb47d7d251b4dd51c6492e. 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/bf77153c-c779-414a-aad6-39eaacbdb52a.json and https://artists.proofprofile.net/proofs/artist/bf77153c-c779-414a-aad6-39eaacbdb52a.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 0x26ee0165d066822f3ff5b89aa149b930384e0e5bacd21afbb957af076df2c739. 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/TCAJY2589535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e49ff78b80aaa7d335724b84417a50b7400dd67638e0b5a87e7eca7b3f45adb. 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/TCAJY2589490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf38401c365139e0e599028dfbfd77d75eaa3dc3f6512191eb1fc5411aa9e3f8. 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/TCAJY2589567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81e6f809243a4113042b1a0f6d8824901094fc62527480c2094adea6db70caeb. 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/TCAJY2589459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4edac4649fa0f94ba70f773bfbeb7f9b677e062a24ff66212ecf7cb45ee7f6d. 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/TCAJY2589586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45a899d6e342e9d536e6da34952635539eb358fc615413cad0f0b301a662264f. 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/TCAJZ2589451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75e242c77d2f173562fe976a7215fb5d8b7465601f2f3f2e7ec9912b36488fd3. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:32:23Z), 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/TCAJY2589426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19704ba9b1f039cb6b13d7b7a6239569130c1b1b8f4d2fafcad643d52115e720. 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/TCAJY2589504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc25f2f84205faf0030916d6c537e5e29194d828a5923f5061171d138b1d76876. 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/TCAJY2589555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd292d2aeb5682e12e0ea01672ae7a04d8623847a2faf8a0308dbbb6e7bc944ae. 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/TCAJY2589404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23a94daee90ec54636ddaae6f383a3a6193771ee98b43a46a5bb7e248fedf740. 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/TCAJZ2589471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x376d35f8e3cfd962da96dceff9e5fd3bd68ddb41d5e94ec2014d0a486a4f7e15. 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/TCAJY2599414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1946c1930661c1ae9881eda6c7d52f0b50d6744a6fd16c2d844982ff29f885ba. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/TCAJY2599424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccb29802fff6d1a86a744fbbda4b4f76a2e012d525e5ae933234342a8d429f1c. 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/TCAJY2599310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7f1b34861265a945b6621cec17b34794a280d43e0a8fbd67cb41c0515056af5. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/TCAJY2599399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0899d2f3abb1ca018208948cf7d68b444947fbc17667fd97ce78220ce14cb3fa. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/TCAJY2599286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x003aec16fbf3e074fe0a9af533fcde97c6bb53f46d746b63de282d068ba8416c. 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/TCAJY2599334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0721718ed472397f048bc0aefb9df1d154f12b13bce7cdd3112e0f08cfaacf26. 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/TCAJY2599365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8830e31a2c24ac43fe35f27420e024928ba576e7d049769a38f1e683bf857e23. 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/TCAJY2599327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78105e14cc78acbb0558efff15fb11dbb1d7ef24ae4cc37c85f7b3ba8af8b2a7. 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/TCAJY2599432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1f5a361714de359ae3708fb08d74792ad604090a980eae6b2fc21c2bed10591. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T22:06:03Z), 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/TCAJY2599351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60f95469ff30a8fbbd8ba38cd25e3c66c31ed8895a31c09684ef7225d195344b. 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/TCAJY2599317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99316ef2ca2ba72995ec4af4af3160225b4ba891236e9561c250afd18ada3d0c. 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/TCAJY2599378.