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 0xce4ec94063fb6d8cf922db3343ceeb5241a5b9173fc6cc4b8c03a729f24b4b5c. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/43369108-6b79-4d0f-9560-21ef8e000c6c.json and https://artists.proofprofile.net/proofs/artist/43369108-6b79-4d0f-9560-21ef8e000c6c.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 0x1a87ccc7db11958890f1049dd0835f2bbf1e9324fbc990c2006dc6bf189cd558. 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/INT132400200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00da96707077c440e7070cc5a6619df270f7c55bdd4863f02bb130b5c5916351. 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/TCAHX2487389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48b7ffb833e64a6f42c6c6ad8d799e0c46d94075993c33de93b3751d1316e888. 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/TCAHW2478319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5355b975b63208d8e4e061047853069b8316fcbc09e91fb78a75eedcdd176ea. 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/TCAHU2475090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94991f8ba5e0092f59362e6a84ee2cb2863ec679612a81ea6ba39e7d0a9bf59c. 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/TCAHU2404296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8625b3a6825edb1ce2d9e8665286b556c44c11474c6651986a38206214b8fde3. 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/TCAHT2473021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc888ba268d70a3e8f9e128bc5d1d5d58dbd286b6e31a28f3a3e332bbca75ac5b. 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/INT132300665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb1c4389f0a3528635a37e028cce2ad7edf1bf526036d6ef822b8d569fda2d62. 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/TCAHD2365308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd05e27c061a234b6df75722f21ddae344704f2b38366452b656a0b5e2dc992a1. 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/TCAGZ2311124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06b5ffd9c93c8376a30147775313680950ce466db1286db9bcd6e1eff63e8812. 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/TCAGZ2310609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22dbd9c845264678f15cd6e1184934dce2a34db5192d300aaf7bbe5ed8eb48fd. 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/TCAGX2338089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85431e08046b88d17303c75a7bdc7f7d23c0f1bc13e2d1779610128eeb3f53d9. 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/TCAGS2399013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95eb5ce84138eb9ded41163b999d018f417b1c8a7fcf37efdf9098e099d6b3cd. 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/FRX202295107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aac35c4b91c954afce8f154494fc5ee8cfb5ea0ab9165d8d322e5b43bcda41b. 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/INB802000089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67b0f36add01383fb7068112ba8e3cda9f4864ba4a10494313c7dd0a65751d82. 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/INB802000082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21d1253a5df78beb2e41421509283e11b5d5588e541cc6deb8b9af5b271c1917. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/INB802000077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9609715f610a0f6a3a046eb6223761dd9e2e98f3703cadd681569213b277b11b. 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/INB802000073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb24022b4dfb33b116a34f8914cd5875ba856e95a779c66f92fbae479dbefdfa5. 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/INL232004750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d954bb6bcab7752740d543dcc45b9895d8a7433042644239c77f1e2661df3d9. 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/INS182000393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ae032d600b83432b8533fba76fd334ea94717f66dae9e496b392b6238b95b6b. 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/FR59R2058018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a6ecbe342f54aad632285e0cf1a7dddd0348e8b19d9ed8d6dcb161f3f7fdc31. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USHM81948982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b31fc4018a2e7f08dab6daca57c52fc19a46fb03374fa912153d2d88a21d390. 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/FR59R2058019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f3b7332c731000cb27ba885553f792da05a9fb1157412323b935f554eb62e7c. 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/INV111700434.