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 0xf26fdc657486eadd7ad55cbd442a66d81385e869aeb20536724284d4024c3630. 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/df45897b-a40f-4499-b44e-99a22f25705f.json and https://artists.proofprofile.net/proofs/artist/df45897b-a40f-4499-b44e-99a22f25705f.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 0xb7d9f53980392b5f659d10f9fd6c5f874a8c40a3d63aec33b4b5f5df044ad1c6. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:47:49Z), 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/AR8L71400572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc376b4a5e869f1d1b51ff62b4ea67cc8c1cfc529807ff1e756c610e11825b372. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/AR8L71400580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc64d8f5c3e16e941e7d7d8cdef37ac00dc5c83d2eca7e22d32032128fd10cf6d. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:05:32Z), 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/AR8L71400583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcecde9423d6e12bb2d10ac1953d8f54e383b33075205955fec5d7db31fbf8315. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/GBSMU8184120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13bcf03c59379522bb0fda354ba138c9dd6ad1c44b360ac0084ae513e915c4c1. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/GBSMU8184121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb80e79f5c10ceffbfc6eb606afe032ab66bd9d08942158ba150c93089479e3e6. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/GBSMU8184122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde58b459565fa95d58147776c7223f11c0c41ce74ef538411f30f66c44db7a6c. Chain 2 (Bitcoin): anchored in block 957735 (2026-07-12T17:47:43Z), 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/GBSMU8184124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7e940bf2d50de819264e742d5b5cecd51c5348bdef82048b995b1340b158d92. Chain 2 (Bitcoin): anchored in block 957735 (2026-07-12T17:47:43Z), 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/GBSMU8184125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd07fd1ad6b93ce06ef3ace921b1be308dfc6488b1492c33a68809fe29e32b414. 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/GBSMU8184126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbebdde4949e3966897b40d8fcb03206af62e6f09de43e726861f192013591427. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/GBSMU8184127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd329230f0a92b952eafdeaa0f634c2d217987e086027a4d8b854ee3a0660834. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:10:19Z), 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/GBSMU8184130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34468dec442cbc3f0d6e1155c6fc1fbe2d84a0f1f20b923878312e2b021733f5. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:21:14Z), 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/GBSMU8184131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x224898227839501bca06a8c3ce7f34925e0aab409e22e7c4e8980095f51a47eb. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GX38U2142168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40609940295a98284e06e111cd7147b5384841bdcc9b76ac6bbf3f1f60c6fa21. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GX38U2142170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cac0fe9568ddf32b33c7186fccd26bb7a9a868df65d93619694abd5bfc6cd1f. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GX38U2142182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ac0c20b0f003cdee7ba22f3d3b3ddd788614f3d4253b6b808dcb1ba4e5fa28c. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/GX38U2142184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa46d25bf4197cc5a044037e7f25112ee0c6d8e0b5a64577a11c9e0027b4e9ec4. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/GX38U2142196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71a8f33aca8c26dccabf1126dd96433067e23754de0b9b947e988101a2766eed. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/GX38U2142198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa047f30fdb52e499b8b76af65c8bab4c84f5b0db5765be49466fa641551e8ec. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:10:44Z), 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/GX38U2142199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5250f37c7d0d033e9e79511c129c22c24c3cf66a1144a47791666a4ed6210405. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/AR4YM2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x635e49add7eeb928cde3da235eb7ed8f7e9123e7f709e2abbd03eee0cd3bd821. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/AR4YM2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d51eae234b6806812dc44899aafa3ca01b8cfde1a585cf9125236065da27135. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-22T02:30:50Z), 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/AR4YM2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33fbc2227bc5e3f59383282013921d100acb1fa63f2fae9b17b6ce9a150304a6. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T03:57:58Z), 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/AR4YM2400008.