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 0xe102556becab6e6780b279f36e3ae2ed20bb67a2091cb8342410bb57475544e7. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cdbdd5c3-1b41-44d7-8c1e-1152b3a8c264.json and https://artists.proofprofile.net/proofs/artist/cdbdd5c3-1b41-44d7-8c1e-1152b3a8c264.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 0xe13a9a968848b73e4e5a7b1c74e1aacc05cd42b679bd24aa6c2b65cbf1efda10. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZAKB2166055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe13a9a968848b73e4e5a7b1c74e1aacc05cd42b679bd24aa6c2b65cbf1efda10. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZAKB2166055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f5ea387f359870a2a2075a54ea668d3b083243edf1ab8dbd38fd60b2b8f550a. 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/QZAKB2169837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5450208b35ff82a28102357ac37ce7ed1a300039fda74505e7e50cd7765e31d7. 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/QZAKB2200606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x715ea4165640b50040ef19f188bd9db6ebe49d3b0c571261f52e9503fb195928. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:55:01Z), 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/QZAKB2201954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dc102ad75b4265ebfbf4e8adb8b26e08fc3eb2c684a864a9cce0f7dde46f868. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZAKB2201958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe938889f92d31316b805d4fa49699e0de1009c4b1c6597f1abd95e01b632f13d. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QZMHM2344694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x549807485243557adae5ae3144458483aa37fd3d862fcaf3519a07ba8d21917c. 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/QZS652325461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb904d5c73797605d5e6eaac176a184594bd87a04eb9f664750a4461d52773ee6. 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/QMFMF2306034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec643c5c7d6dee0f1f39b98de0dfb2846bc9a9c9fec718861ac8d553d71468db. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-17T02:20:41Z), 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/QM4TW2499993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x299009af42975209da1b63e8c7b1af453af1dcddb0bcb57d89112de22f44441c. 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/QM4TX2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc69038d7a35eab273963778eecbd879e0f5deb01c0622db1ddfe42afd6c67d14. 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/QZS642140634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3aab3b44d300333f13ad1cfc7ec329f44478376ee2f426b1cb337e0dfac0e9f. 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/QM4TW2410749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bccf0904aefb1e7f3719e7c7b1a33e3becea955650f02172309e2f3f8feeb3f. 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/QM4TX2400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b654a8d5ea76765ae3f912c6c4173d57e5083ed8b4f841f468feac1a53dcf25. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T13:55:37Z), 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/QM4TX2400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06e60614fea6a62590ba8c82db1af9974fe61235ee0aeb1c719accea78290f74. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:02:49Z), 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/QM4TX2400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21075e10860e19e880cb08834f7484a4afcdb35206a517ff748db5fb5a0e28f5. 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/QMBZ92498914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd23fcb9118a7b3956b36c1fe10ceabdfb8efb42561a25c2732bdb3f5bca5f291. 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/QMBZ92498918.
I don't know how to explain to you that you should care about other people
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0bf17a0794cd2fe23d6d1cec326eea86241aa7ef40b13a827c3a2d41e1f771d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZVK62400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe1495f825e94c4b50043f4af5e1b0e50a93db3de5ba068ba3f90cf4756e52e6. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USLZJ2169095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74353ed9e5ab4d7ddf6dd26370b0d9fee551c38ebc0824aeaf905ea95060e214. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZ5FN2336606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87806423df81e3259a3e67d5ddc49e97621273aca6ce5bd2a3cd8c932d4345a9. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZVK62200029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bc18b952b0f05c90b15f204d159b55d6e8506088e0b38e29218d3b9f763f258. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/QZ5FN2151140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9701da89d77e738ea9584a0657fef6360c8d0bdd79ae78ffaf59eedc2361c63e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZAKB2202260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6a39a7f8055ee0e4bc34d2a020e2c6ebd70bcf1c56a92d65cc0cef72c033a11. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZES72384268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa33ae88aed7e1d6a51e1608b140c3bac226b46f011be6e30899831a5f17bea4b. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/QZTB32272631.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48b96ae27d4cf4329f4215acf2b25c92fe4bf015d4586e475444d55bfd761d18. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/NLRD51632959.