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 0xaf4da07e0b8d5fcc8c635744b66d1e95a02f4d41b11108335c76cc6a5aa01a27. Chain 2 (Bitcoin): anchored in block 953592 (2026-06-14T05:36:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/02e5a20c-32ca-4fa5-9236-3212908355f6.json and https://artists.proofprofile.net/proofs/artist/02e5a20c-32ca-4fa5-9236-3212908355f6.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 0x84a140fac3e95371dc6ada5395d3cc5df3324033fb3962e9badbb7133e9a801f. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/TCAIR2464992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb566aa74c54a46111133f144ddaff0f20b293f2514594ff3a38f522b5d2767e7. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/TCAIF2443989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57de69d0fa075d01819fec84cc03e49a260ccd6c8a0ad00942b8687e5ba48071. Chain 2 (Bitcoin): anchored in block 960383 (2026-07-31T09:50:37Z), 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/TCAIF2444043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb13cf81ef373ea5146c46f205d83132e3a0fec8f2092d6d69fb39b4d5638e520. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/TCAHX2426554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b4c3081e51c4bb6719b3def4c1d92e2c68f25a806048a59f6183e823b95fa93. 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/TCAGY2301042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x405c9c39d854083679f7c6dadb844238cc769710778a8338307aee2cfa2ea184. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/TCAGY2301047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37ab2a8f7f1fe2d07de7d6862ee6391fd1f7df0dbc7ab60ad114f2a0419a0f90. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/TCAHT2443085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf4d19cf5e627b5802d8194e27254e5cd4f80984c06ca14d85678fe3639d6bcd. Chain 2 (Bitcoin): anchored in block 960456 (2026-07-31T19:53:57Z), 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/TCAHT2443099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff5d99901fa27253e8ac99d8287834b13240b82781d2cdf64a830bc7bcb7ec82. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/TCAFB2073290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dac89ac3ff780a2bd24c1ae667dd5ba21f09e6ed1617f6d06c9fdcae5fd0ef1. 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/TCAER2024619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x405b3bd83359746b7dd97128761e3d013cd5e5815ee7bf2414c6e2822bde795b. Chain 2 (Bitcoin): anchored in block 960167 (2026-07-29T23:42:34Z), 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/TCAER2024639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6685a311fb18c09a0ffb9dc4ead0a368f46c1c843dcc902ef3dd975da074785. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/TCAER2024738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x716ec5ad17c90d7905afa566e74b991f8a42f849cc534a1399a25127cb409ec3. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/TCAER2024502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9cd79fc6ae68f2a2dda2591ec7b0255da6b18b3278fb5cd55848250b78cf1da. 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/TCAER2044070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df2d7de625413a27d1a5cde5714a770e8edf4314a6c32bcb2502669f6f91663. 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/TCAEE1976392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e1efeceaabf98d4191e51e1f459944c4e769364da9ccffd3959532d1259b3bc. 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/TCAEE1976460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1759ac8e4e4f3d9d31950428cca5dd2bd01d1b63013892c214402909f288d9f4. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/USUYG1144044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67bbbb57b82ef973c26f4d7743b9d1e2e93ea73f7c38fee7fc5154cc972f0512. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/USUYG1144048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd993f0d01aac3d63fb8e2ef0799056eb8719274a7d586bbf34920ffb3292523b. 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/USUYG1144057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3ae9fa118a9f05815c9df02b2b117f270030e1f1e93f825ec27e38decd07624. 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/TCACY1796676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x399e941b95c6725530dbc998bae73259b39fbd1b13ccd1906801b73db44645dc. 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/TCACY1796685.
They Hatin (feat. Microwave Rollie & Leo Lean)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d43dc6041ee42ad480062cd7e3f82689c12e0b6bc94ed65331cd8a2676d14ba. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/TCACY1796733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdde9f6e3cd53bcfb4fae4815b98dac733a6809935b2a2b678c45799f96969ce6. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/TCACY1796741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa4db257b1587f0b9aa64fe9f5e5d5f3120a18fe2dd2141056a9d09c1c92efca. 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/USA2P1632813.
The Realist Shit I Never Wrote (All Freestyles)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9e41df600c4df75f505d5eec591534b932da7002b9daca3cd8e54ccacd6c29a. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/TCAIM2476949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94e8f588eebc1781f6889da9b5404ed2203046bababcf8ca71a26578fdc1ac9e. 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/TCAHK2312358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb5363506558e81a8f1c350d9dcb61c1a9c8b930e6d531abbf388b39fa0d6004. 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/USUYG1412312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d554e437d56c5b2c8ae254d37f22f509c44e79163805debdf61a36c8434f4db. 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/TCAFZ2259518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3c53af8811c376eb66dc84be202734b9e6d6d7afc6f28c8476e2024554065b2. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/TCAFU2166293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03d5857c625890d6f0a29f7bd03932247497f1e00331360dad47504e3bc68468. 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/TCAFI2192295.