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 0x13ffe9decfdb2549b16cb257d26681cf577f7640a9cd27da314f2e1e2ab48719. 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/aa18c186-e3a0-4573-9840-0329c2fbfba7.json and https://artists.proofprofile.net/proofs/artist/aa18c186-e3a0-4573-9840-0329c2fbfba7.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 0x9bd4563fccca5d1a66df18188a08d3bfedb12ab130f99c36a78511f4afba87b3. 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/DEQ021901178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecfe3f3b50ee89028f43d4c1cbf4f2236f67472ef8450029bb0247561d4c76c8. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/QZPLR2013742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f508a713c20d85d53eb2b07e2fe9be385735d14d0d5993e60789fb3c55c4aea. 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/UK6822001758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d262459f587c5854cffc4709c38a7310894093ec97a583a35f47977ddb6fc28. 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/USLZJ2303895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd60c5f5632fcd0210e09ecd189fb1aa689c4782d4456cc80e2c1cf7cecde5db7. 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/QZZ8B2345808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58ab3056b0f479dba430c6eb2e1514b229391ddab645d59c973b7133b81c42e2. 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/QZZEC2318839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67b96179bdb68e2d73bc860a8ebf08a27b7a6a51c8e8384787273851e1b4083d. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZ5FN2422285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03c962de258f8eb271c37cf8ad938a24eed43b04ee1f44b74f23a6dfbca0c833. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZWV32444773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55ce308efac2d5bec2b6df79b4c230a32f8e4be415a94d92ef6b012a3e3d1018. 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/QZWV32459074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36ee70940ddf8a6c79257fc252e94f5d3a11f9cee85a14a7220d664d47768c31. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:32:40Z), 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/QZZ8A2409939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa54706ba03a7290356dde275b22f1130060d690d675d228868314b70409a682b. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T23:06:51Z), 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/QZZ8A2481135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x696a2a6864baa2eec44040916b36d26a70b62b3c766256b4635f9e6b38a14f2a. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:32:11Z), 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/QZZ8B2407817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa58e914aaac95df9514db878817fa2e2e3d27bd9b5fe7f409d8eb0a438c815d8. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/QZZ8B2407823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b63144c258eb372420e635f4cbf970edd4f0c9008c82055f0d7504b043a35d5. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QZZ8A2428419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bed528f43c0936f25d40f68c521dd344049330e89e4072c6e30d5b101cb849c. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QZZ8B2407826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa54706ba03a7290356dde275b22f1130060d690d675d228868314b70409a682b. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T02:13:38Z), 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/QZZ8A2481135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ecba4f57769044a2b06850f03588e273b949341938f0eb7a75cfce410cf3929. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZZ8B2407831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x654166fc65f9dd9d347c58b54dfda956179ac54d2cce7c7b049c78ec611daefb. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZZ8B2407833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83380b7d9c906500377afb311c9b02114ee9abbf30b9e80b81d06a4c6659d7e8. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/QZZ8B2407835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc90cd5b50b64e42fd3814d32e98b795e875bf44af703d0c3877a7e58a184571e. Chain 2 (Bitcoin): anchored in block 958988 (2026-07-21T11:32:58Z), 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/QZHNA2520203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d1c484b17b75da63b70cd7da67642675af1234522a6871aa0ad5ba3033bdc0d. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZES52566750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6421bc2123822bb7ee2da89ba6cee1eeff42592aaab96f6ec13236da5ba37715. 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/QZWV32549660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b03fd70ec42bec27a5b2778683cc1a9e671908f75fa07efeb410f47c3a7149a. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/UK6822001716.