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 0x45895f8d79776be6bfaf0bea49e089251610d3924fba68cf3db1bf02843b3489. 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/6c2c13d9-c395-4767-97e8-0b6e159efd23.json and https://artists.proofprofile.net/proofs/artist/6c2c13d9-c395-4767-97e8-0b6e159efd23.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 0xb67a5a36856801e66d1a98841d5ea9836dff8b27d0afdad1c45bd307ac6918ef. 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/TCJPJ1985964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43f5894f43f5153699a326fc0548a7dd8cfff5b24beb3625cc683170b6bf4f13. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T05:30:12Z), 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/TCJPK2092516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x034aa1ec593cd9f1022342449f50cdf51506db98d6941d9e1764eb02382d223f. Chain 2 (Bitcoin): anchored in block 959026 (2026-07-21T15:38:13Z), 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/TCJPO2173066.
Hi Hater (feat. Yurufuwa Gang & Jin Dogg)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4e6020147e3b995efd3d1972f3b6fa35a18289fdf17635ca9a7627b557c5859. 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/TCJPQ2171143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4e6020147e3b995efd3d1972f3b6fa35a18289fdf17635ca9a7627b557c5859. 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/TCJPQ2171143.
HAHAHAHA (feat. Jinmenusagi & SANTAWORLDVIEW)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x206039594274c8d2e4be5ccac547f4ff86ce1b4a3031eb70474687e528950030. 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/TCJPU2332573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ec33052022e7ba679adf1d7e8d5ed73942b885ccac524b9a18deccf435e733e. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TCJPX2374453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab2290436b2f054106dc3880a1c40cd2a7a755f66b2916f1afc134c068754bf3. 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/TCJPY2487903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x217b3ca869c90329c853e381abab302d4f26180c7c6dc8cfcbb3d20f5ef0edf0. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/TCJPB2408589.
SCRAMBLE (feat. Kamiyada+, Jin Dogg, rirugiliyangugili & 042ghxst)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea0b30691cc695a1241c4cd59c1718ab06bc6a56e6a89d503b5d7af0b5939d0e. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/TCJPB2408642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e1ac578bde32c1253fd1327c219b6560c3cd21593de944049d7d39d55f10ca0. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TCJPB2408684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25d24f86a502403a356d6b48afb4776e9490cff24a85af547acac3b8d85417d4. 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/TCJPB2408978.
U MUST DIE (feat. Leon Fanourakis, Hideyoshi, BLAISE, S TILL I DIE, Necessary Evil, rirugiliyangugili, Lil Ash 懺悔, MIKADO & Jin Dogg)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe33feee89900ccd565d5ff342d6d366e1895387e54005d78beb9519c6d82907e. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCJPB2410505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69a1e47b3ae2ddabccad50b9b5ca4309fae1de29472b9e697dc1b847d529c09c. Chain 2 (Bitcoin): anchored in block 958422 (2026-07-17T13:35:31Z), 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/TCJPB2410509.
RUN IT UP (feat. Yvng Patra & Maddy Soma)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x846d56bd13f364cfe6ffbccd98385d44bb19f7df6e24f084ab28348465ef9520. 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/TCJPB2410496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bc88137c265da24bf0e72664af32812d084be137900cee38899967eb34836ad. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/TCJPC2446951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x265411f2ea62d77ebad6287197e7de918127af67ae24153d0fc6c6788391094a. 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/QZK6L2475210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fd6806e6b2d87f736f8bc761d029ce246dc7f3a766512c5037a2e6539d44a66. 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/TCJPP2155759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae83f0597892c24790e841248574c3bd0c28773e0800ceb8bd090a4987ccae74. 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/TCJPP2155766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe812efcb72004282373b5ee5cd55498641a470cea63d395e724eab9f39895876. 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/TCJPP2155768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x990a735ece2f107d2f646d54670b9386cd6cbd6a5daf21523ead65afbc76ce5c. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TCJPP2155787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4af08cdf474ba11e4e29cd17f9809cc614f6763a08bc0131105a7364fceca52. 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/TCJPU2392571.