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 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 0x45085ba44b508013def99e79b81d58f762cb2a5f213a2dfd49eebd722b2ab6fa. 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/222a3fe0-6a45-42e5-af57-8e79540f758c.json and https://artists.proofprofile.net/proofs/artist/222a3fe0-6a45-42e5-af57-8e79540f758c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Swingin' On A Star - A Jazz Piano Tribute To The Great Male Crooners Of The 20th Century
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 0x56d3aeaa8f208946a6d1a34805e1b73e10a17b05dd1ac30124eb2cf8a767d744. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/QMQME1400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2ad27fd4191aaf65c780956439a386d3da1dbd1f6e3c4e01ef98d6791b488cc. 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/QMQME1400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90f12f4d361507b7849dcf4c32045a89df798bffed9b0b02272e52485127ec45. 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/QMQME1400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d6173f92c1c4929a5768dfe94ff9fcfc0121f41bdc1d2a288d465d338f4a09b. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/QMQME1400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb62bd8100a916d282dd64fd52d0b1a68682de2f8fab4f348047088459c2bf750. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/QMQME1400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x296d2b50f8f8bda14788467fe701382732b75a90ea6e494b2a75dc81d9ade67c. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T03:48:36Z), 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/QMQME1400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a6114ba3fedc9b78b98df999574cbc6e68977700189d1691da6010e5d89ef0a. 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/QMQME1400011.
Martinis & Mistletoe: Christmas Jazz Piano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2302837a18947b0909b0f3dec6eaabdcc87894d7bf53abe37d80af1585006ae1. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QMQME1500020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x301a700aedae95d06c2677c06e8da3cde3966b2b931756df4918efa4105eef10. 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/QMQME1500022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0aa7da9eeb5e8cc56bbd78e039ca9bd486fbbfad439758c4fc21656f706c77d. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QMQME1500023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14c422f86694e2e77799b9e089c8c9730ae4d73a2512cac0b441d993c8246e15. 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/QMQME1500024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x224ce0ee28a0dea40bd1173b92cadd4a216609fa6357c6a5313ad10c92d21d1c. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/QMQME1500029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71556afa1eeb89fc4cea8d3aa7eadaea9acf19ee9651d6bd70e9287924c48081. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QMQME1500030.
Martinis & Mistletoe 2: Christmas Jazz Piano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22d48e6fa619eb8981b2db5f4a680372e48d8edddb29d1475d61c6f5546da7e6. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/QMQME1900203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7159fabb86a862db8a713fbd63e7641c6d7acb00f786f1f223afe46b9b27dd5b. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/QMQME1900204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb229373199b7fe8c2b8a324f77fea8772824ae4e703d96ceec733b111868bda. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/QMQME1900207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05249c701d2c19121390cacc0ae0088290dfc21af7394bf5fab8311ff3d9f507. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QMQME1900209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac1c02a1db40dbc2a4b31d82308c6a8d78753637a1755f3aa64712365487969e. 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/QMQME2100152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab86320ff8d7d29130172b9e9e3e4409d5070001c4b22b4ec2e7fc366410889e. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QMQME2200028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d3b69d9c1843a9564e7a57790642c5d57c6ca267e771e4dd5f4314234bb16f7. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T05:30:12Z), 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/QMQME2200098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d30403076c8475c5f00bdf58b78bea0b75f1c69688907eff1f003daf4246c29. 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/QMQME2000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d5a766945eb97782b620cf0d96043c3c3571e6f78f90aab2cae7d940fa6c6e7. 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/QMQME2300104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d3b69d9c1843a9564e7a57790642c5d57c6ca267e771e4dd5f4314234bb16f7. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QMQME2200098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72eb54773b29001d2486ab391a7d67b0ebf8e69cd3b007b8e5deced53a206468. 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/QMQME2300062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab86320ff8d7d29130172b9e9e3e4409d5070001c4b22b4ec2e7fc366410889e. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QMQME2200028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05249c701d2c19121390cacc0ae0088290dfc21af7394bf5fab8311ff3d9f507. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QMQME1900209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf92d3c0fbcdbc3aec420414093f73a7efb538f9fd27d00b6b2e3035a51be7cb4. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QMQME1300055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56d3aeaa8f208946a6d1a34805e1b73e10a17b05dd1ac30124eb2cf8a767d744. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/QMQME1400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90f12f4d361507b7849dcf4c32045a89df798bffed9b0b02272e52485127ec45. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QMQME1400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2d6565b2c9d01f40af4f33705be7594c0fd0fb7c5846f8d49884337e89963c1. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/QMQME1300047.