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 0x128e49ccf49b4ed89dcf8e1f88f08dfa9f621b3113c01e89b5ba60a9d293535e. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/47e287f1-6969-4e12-8cb9-bc98facc86e9.json and https://artists.proofprofile.net/proofs/artist/47e287f1-6969-4e12-8cb9-bc98facc86e9.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 0x7d2456ed701cf1f223d0d9ce54ebf92916e60b597c09c999156e01b2f1f0f451. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/USSM10500585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d2456ed701cf1f223d0d9ce54ebf92916e60b597c09c999156e01b2f1f0f451. Chain 2 (Bitcoin): anchored in block 958752 (2026-07-19T18:51:37Z), 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/USSM10500585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81d05d3b8fedbd2af3bbfbd866833162534f7fe394ac22bbf065f5831e94ae3d. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T15:07:09Z), 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/QM4TX2385218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf52663c472b96c9e4b509367e314038c262bc6f7469daa9a02cb475e6ffa4903. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QM6P42367583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d5e9d81c88d15d6c00f6ac9f7d31b89ad068bdbf7a3a6fc86f90a5d7addedd4. 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/USUG11500823.
Mama Kin - Live In Paris, Hippodrome De Vincennes - June 6, 1992
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54ffd8a6d783fb9af11ee3753db8a6f23082bfdbd18a59749690765f8e155966. 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/USUG12206160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3f986782ff233b31ea2fd8a96fa5397a98e11b2f6a4f6e628fef5c8e79184cf. 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/USUG11500818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83defb0fba28fbcd235b279853712cb0b82f9e159bc159efce666ba207868b6c. 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/USUG11500819.
Train Kept A Rollin' - Live In Paris, Hippodrome De Vincennes - June 6, 1992
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c13f98bbb79eef3d520d0887bf14b614b8d3fbdf816210eea9a1574e4ef1ecc. 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/USUG12206161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01fd57d165ec4ac7e7a3477cdc81e6cf4b1eb2b7083994eeea614fe7534d5fc1. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/USUG11500820.
Bad Man (feat. Robin Thicke, Joe Perry & Travis Barker)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd47f8d9929a046a8d33b76dadf8a06114df35d1341b31383a8f995333a46a1c0. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USRC11600083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9b2dff239904651e573e24f2ab622be6ebef4119e0382f79e17598f26ade04c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QM6XS2201319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa24da59db29419d402b66b0fccc0b37d0c0aabd7d2dbff5ff394fa0a235ebf55. 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/USIR29905027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4193fb7780629a9cdc9d22160f3b6578d62309d986c2e1223a854393a55a6c82. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/QMFME1321905.
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 0x8c5de7d1369b2b3527520cbc2a77a1b2d2bec3e7ea66fa0feba1577797241d67. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USME31400247.