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 0x721dc7b0d107dde866aa0a196f7c94fda3fa3863688736c2a2446b27778357b8. 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/6927e136-9b05-4542-a088-7449510de844.json and https://artists.proofprofile.net/proofs/artist/6927e136-9b05-4542-a088-7449510de844.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 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 0xac066d3c8cadd4089a9e8e17ff4fdfc25b25ed473015ef6addda10206612d118. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZAPG1891942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64fdf470f8644c2e3eb8ee803bce1ecd3f4ff3075e473102f2513c1064f286f6. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/QZAPG1891731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce484a0906a5ec19d0bedd6b84476b4880f545ffe0f5017ff312c4c13483969d. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/QZ4JJ1848711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc526333fd88da2e35e7ea1fb16936d4fe8241f67846967b71ba68c9dcc6e0cfe. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/QZK6Q2090042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68ff4ad1287707a47e2500ea04d49244d876686307144d09fe1591be82e3925f. 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/QZFZ22118950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8263d191d535637f1df5b0aa86a4a486bd89064dcb2d795f6ff2fbb561c5cbe. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZHN32131169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c77e43f9bb15beda9bc2ede5c41050a50b47a4f80f5c08c591b5d3e007494d0. 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/QZMEQ2124187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe85b4357d76146e3c7d372ff88be965f20e1f2b62dde25cda86dc92ab0f10f78. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/QZTBA2244326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d56a26b574b06fbcd69d661c6fd87a5000e68e0de19541fa1a5d1a0b035c814. 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/QZTBA2244327.
Father Finlee - (feat. Justin Ray Stringer)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79a0d2b0f9a27dc3d0767f635f60b43cc06f3308c949e4e4efe705d13a4df12a. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/QZPLR2264700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c77e43f9bb15beda9bc2ede5c41050a50b47a4f80f5c08c591b5d3e007494d0. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/QZMEQ2124187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaa46102c7c8465230ec2aac5f883f6eefd5eabdf8d9ba97e79f0cbf17ea469b. 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/QZTBA2244328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe786f33afad1b4a2cfa947f04fe918ee886dc92bcd2a998883d8001b7edbe688. 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/QZK6F2247380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c08ef1b724f7d93c26b24c330197e84f7ce17565c084c3671064117c0ec60e1. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/QZTBA2244329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bc3def825b4161d52e527e6036cc5171ae69e92635f00bb2ceb83ea5dab5bc8. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/QZNWS2073184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68ff4ad1287707a47e2500ea04d49244d876686307144d09fe1591be82e3925f. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/QZFZ22118950.
Florence in the Floorboards - (feat. Hannah Flores)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e923adc21b952db86ff9e1aae7577290c4cb5ce5b69290302cd62d1f456e128. Chain 2 (Bitcoin): anchored in block 959013 (2026-07-21T13:39:11Z), 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/QZTBA2244330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaa46102c7c8465230ec2aac5f883f6eefd5eabdf8d9ba97e79f0cbf17ea469b. 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/QZTBA2244328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c08ef1b724f7d93c26b24c330197e84f7ce17565c084c3671064117c0ec60e1. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QZTBA2244329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e923adc21b952db86ff9e1aae7577290c4cb5ce5b69290302cd62d1f456e128. 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/QZTBA2244330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaba2b5825eb30ffb1ac807abe4471fee372b89c283e2d9aaad32139590ee630c. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/QZTB82307934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x151df8574c6fd669dcee95e40839c55d91a19f4d601c40b902e8b8c8eb43d3f5. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZTBF2328927.
The Beginner's Guide Live with The Sound Ensemble Chamber Orchestra (Live Orchestral Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x071d3140e2dd3360710550bd2b5eebd0ac2760f778c268925dabaf8ea850c597. 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/QZTBD2487976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3323aca284f5d9d20dfb568b3e92a0dfa24acacc483ce053d549ccb500ac577. 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/QZPLR2583367.