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 0xc939d2b580fc86fa99a7549325a59016db84440f9440c90834efc37bd4324653. 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/bca9c5b3-9058-4a7e-b38e-01793ad5bce3.json and https://artists.proofprofile.net/proofs/artist/bca9c5b3-9058-4a7e-b38e-01793ad5bce3.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 0xd0c000c1d4d25eea0afa2a1c9e9bbc11e710e0ab65ab4b65b901cc8be82cd548. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/USB4U1000649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62677866f826a3a712930e7d54b7234c5db56b1b6fe760fee86ce4890afbe70e. Chain 2 (Bitcoin): anchored in block 957644 (2026-07-12T03:18:52Z), 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/USB4U1000652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x498d35964301f25de47969e9aad262338d507233b8f42dbb24e6106a67c00263. 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/QMQME1600046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x459a0150f8569a094909121be03d0d1f3b4aa35f2bea6dc514d1f64a9810ed41. 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/QMQME1600049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca87965a5f8c69e5730b18913070cb2e744c12d3ad3755958579607f27669c68. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/QMQME1600051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x447e8193ccd3832e978b8b42d216c41fd2df1bc5570671ed933e60f8498549e3. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QMQME1600052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e7d33ae4403d0715ee75fbde6cb5ccbdb3c1747dcb6686a96a586a193bfcad1. 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/QMQME1600053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x552e019066f969401969512e619a24d40979166e2913144fd942eaf5a89575a3. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/QMQME1600054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2250675dc6f20d0557a01cd3c8735bb7ee803c0a4121a400392802c09885e53a. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QMQME1600055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabab362263cd8e6095884239a9ae844291fa97e5e4f78a8f22db0ebee3c2eb4b. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/QMQME1800033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb3464916de7680b2141354dd125d2252a7b488f73197940d3f9c93fb88908c2. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/QMQME1800034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d474f1855120d48448258baf53791c642a79f5089ff5ef67983b57dad7925d5. 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/QMQME1800035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa045694fc49bea1529a208a952060e5ef508957d8065de951b4d2945b753c092. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/QMQME1800036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1393f52eb4e99e9c618afb8aeae3f3d3a3446c815c613c7107c2ed47742c15f8. 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/QMQME1800037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0c73e4a5e28840021422128b9d2d5cf43b66405c9843103cf0d5dc39839b478. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/QMQME1800038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bae5f82d847f5087c07b5cc3f3c20e4eea85bd3e4d6aef1aad3f4842566472c. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/QMQME1800039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cc0acc2e693359a123552031eea812694081ed4b4944ff1ccb9879d5dff021c. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/QMQME1800040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1456497a7df321f812dc318e864d9d7ff7111ed3ba77d9cca43d77e319e1b850. 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/QMQME1800041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f95875c7520a81293f68248b16aef5e8a971e5ddcc8f1c0e3a9c9f6f81fd141. 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/QMQME1800042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5824b14581655cf8ff89fd46372f89ddae8959c00794b4369ea1aaa8782a9290. 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/QMQME1800043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa92daee54098c04e24d4a5ad430046ff15d6e9e3f02044cfea10ad7453e82f86. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), 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/QMQME1800045.
I Dreamed A Dream (From "Les Misérables")
I Dreamed a Dream (From "Les Misérables")
The Lonely Man Theme (From "the Incredible Hulk")
The Lonely Man Theme (From "The Incredible Hulk")
The Lonely Man Theme - From "The Incredible Hulk"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38dd7d5ec98981db95d9c0da29e97fd60c38efb070b54f18646d592eebad5865. Chain 2 (Bitcoin): anchored in block 958680 (2026-07-19T06:04:14Z), 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/QMQME2100170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22785b3ba3b00b5e0639980bed5c7a78ca9855cfbce121b6d8e162fa27b2323c. 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/USB4U1000654.
Piano Music For Moms - Mother's Day Music Collection
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf30b8e6a2b64a98047d0c07083d298783dccbe34b90bbc042a6c0b10b28f2917. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/USB4U1000658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e6bfd92a3c121562c5dc3903d78a566f22d5eb733b9d9e0b1442a3890599876. 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/USB4U1000650.