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 0x3ed1cd363843eead64081e8e207e5001d9989071f6038784624166f0b3266f23. 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/32d9bfa8-cce0-4501-b89b-2479b321eec6.json and https://artists.proofprofile.net/proofs/artist/32d9bfa8-cce0-4501-b89b-2479b321eec6.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 0x76a909b64931766840f0561ee7629b15ab02f832d0928ea93b021f7f957b43c1. 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/USDHM2206037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf612e7bd77073d16d894880401869720eb4536a78e36cba6dbd99e9baf5959ec. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/USDHM2206516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35d341da5d9d16846735e52a3fb5379ee3da4f8f8e7c7e5560493c64186bc5bd. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/USDHM2206668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99c8156bc0f8e0b4476b4dcb367a5d55cfedb640c0f6caa82b4572c373d40479. 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/USDHM2206670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf612e7bd77073d16d894880401869720eb4536a78e36cba6dbd99e9baf5959ec. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/USDHM2206516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69ee85509ebbb250351f4c5b6e0b4f417e3e59aeca79c6810a86223ae3259d39. 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/USDHM2206672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x080f00fa48c9d572e6ebfc6caee83f3b39c006d106e65b5891fca0747dabe666. 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/USDHM2206673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe884545d0c6b733bcc5f0dd9533d8c2e716dc0afcf3db12aa57c6a6f0f2a79ec. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:24:05Z), 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/USDHM2206674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5397d7d3a6a8e2590ea00bd4da5ccd4775d90b5d421e7c40a41fdcc391d6349c. 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/USDHM2206675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76a909b64931766840f0561ee7629b15ab02f832d0928ea93b021f7f957b43c1. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USDHM2206037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x785670ada35d4d43858d12df8c2b96826e43634916d42e2dd894886f1619a5d1. 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/USDHM2208823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03000c24757322adf5b353b76ac8442c00d08a64ffc1fedad8970ceed0ae77e9. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USDHM2303939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28a28673990219162085e2c4cf4f3c31ee05f27f5bf220ed9dbd7b5a577128c7. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USDHM2104491.
Family Nights, Vol. 1: All Your Heart (Live Extended Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0a6a59220bdf85a7131613500945ea316f685502fc705783604eeeefe31a67f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/US25L2300293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01e817a58d74b83f6850437a3b46722859bda48a1442091a8a343f565c43b99b. 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/US25L2300377.
Family Nights, Vol. 1: All Your Heart (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0a6a59220bdf85a7131613500945ea316f685502fc705783604eeeefe31a67f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/US25L2300293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01e817a58d74b83f6850437a3b46722859bda48a1442091a8a343f565c43b99b. 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/US25L2300377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0a6a59220bdf85a7131613500945ea316f685502fc705783604eeeefe31a67f. 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/US25L2300293.
Take What's Ours (feat. Logic & Aaron Williams)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb34a967e94ff7c60f16dcef3efced5f0f1c1b0dd5fc76f4b09dc8867eef299d7. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/QM4TX2481743.
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