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 0x2a9ab835ffce9a577046fb40d645ce5822fb856c82c60a6915c291f76f537d81. 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/1f4d76f3-1150-4494-ab8f-11aa2a4c7e3d.json and https://artists.proofprofile.net/proofs/artist/1f4d76f3-1150-4494-ab8f-11aa2a4c7e3d.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 0xe8dcd7e0451f566900b02d768f26742480b64f614dd165ad09d01ba9e06e5fd0. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPI961800097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eeb377c50e131169cd2661e1b5c2a9e1c9e1a5cced62707164a504f59ccd3ee. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/JPI961800098.
Maddest Circus Show - Puppet Schranz Remixxx
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d1ef81e9bf8bc7a244131448b0b190b5cd3748685811be9b0b58b57e1f26f19. 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/JPI961800099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa3391ccfdc5795806a95427eb3fd5939f9a976fa2f81e4987309133d6d22109. 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/JPI961800100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5f475286a3dd62a888c72c9a82262ea8886650c25146185bda68ecf16813028. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/JPP561100989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1734ca1e4f8dea71912194a57e39db2ba497143a700e455d1fd3f5ff75d2194. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/JPP561100463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd8296a452fcf307c445d8f510db72affbafa0e3afef97e3430b289c91919004. 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/JPP561101254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ed6bebbe07b03e8043982a28afa9c4990ce9d20788b043d270b0e0c0170549f. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/JPP561101133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b118dfbeacf8e1943ff8c8162b03030c8fef4fa66d1caae7bc98acb0f8a38c1. 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/JPP561100228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6a8c5a53b678a0fdad44213bdff11f14d8acfefdb9a7e8249d0ada01a1c4d33. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TCJPR2279879.
TOHO ANTHEM TRACKS -BPM100(±10) or BPM200(±10)-
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5790c1b5e019fece1358f2afed1323d2d3e95ae84644b48ac1d821227c08d44. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPW562108599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x924786471d1cdc1fb62ebd80bd6c11a6a41f555a544b0a4b2ed48650925ccb32. 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/JP92N2239238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ff963474618253099f52c9bfc7df44ad8a6208a5fa91c15646e2e0e3efc7ecc. 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/TCJPJ1947427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc667fbcd69ecd7e4ae704e7b36f73a34b32c3219d2331298340d702c26a0091d. 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/JPI961900052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90e02700632f091ead0b6af02596e8178e7461eff6ba0876410bd980529b8467. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/JPP561100650.
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 0xc71b688529fd4e4b4f070994436391964c32c87cef1c24072e41163b791faa5f. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/JPP561100420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadcca3b75f16610b2a3a9574320292eb694ba3ab30c0020165bf205f6ee8e608. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/JP92N2239147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf54dec2b7ea42c10a012fd4a31ea99f086d530f97c3f748635c5eb951fd96378. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/JP92N2239152.