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 0x8776f409cbcbaef9d068aed6f1c75c9a25111acfc238f3aec0fec6988cc0ca62. 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/60e91b53-2892-4c8a-ae77-28d1874b5042.json and https://artists.proofprofile.net/proofs/artist/60e91b53-2892-4c8a-ae77-28d1874b5042.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Run Away Back Into Me // 90's Teenage Heartthrob (Hated You)
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 0xaa5bbd6e99b3a6237f141a3dac6c0b2841f4c5592d5b4d5f17520148d2da5c82. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/QZTB42370687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8cbf7220918828d709d747bd7a88bfdd75d9cebc7e7162df55018073a8d4923. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QZDA72496575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18f5bdd9b1b11d6808f9684b82664df2538c5ad1a92b5107138e5717fa8c712b. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/QZHNB2475679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cdf991c32f339391f38dc78317bd45058eb0c5a00a0fa2a508b6d3d05921453. 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/QZTB92432466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd103bd3c53273808533c1620d1afee780242dc3446b226a5bd244f41b328796e. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/QZWFM2498666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac78e792eabd2ea15848124e64e02e2313a75d774301fce59a1ce279b07b8e20. 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/QZWFU2426795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x001ac37cb29e10430e36ff27e712b7488476b83bcb45935ae6cb37ebac6bb512. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZZ7T2432611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb41a7361ef7b1c0c536eff113838bdc08efd001c909560803ca78405f108f032. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/QT3EZ2447242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82af3bc65db702b2ccd87c333aff9b67d3c4bd3d82a8d2681fd5bea9fb23d0ba. 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/QT3EZ2447243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd254ee8935d3f0ebefb060e0fc7b3d299841e3275baf28b3dfb73563bbc73841. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/QZES52537524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fa4211729888348cd837f734b0e0a3caa20b341bb57a59645351a2eecdf961e. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZK6Q2515743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd254ee8935d3f0ebefb060e0fc7b3d299841e3275baf28b3dfb73563bbc73841. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/QZES52537524.