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 0xfb2d7b5a962f0c7a516e9c6cf4a27c9bdf5f4591a21ed90f6690c6a30a98b346. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2d8ddc06-0444-4990-b43a-66f60ec08bbe.json and https://artists.proofprofile.net/proofs/artist/2d8ddc06-0444-4990-b43a-66f60ec08bbe.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 0x7fc5e032f4f1b1fb0a1d5f348a3979afea71a1fd1a669151699305873f59c3fd. 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/QZGTH1900068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedf0e07083310acd6cb460f452777ec0587c5b5c5ab22d5594d4f574da913d5c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZGTH1900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d20eba257fea041cef3353fa45aa9e93897dbecf6b37190ee7dc7feafa59cf3. 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/QMEZE1859706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0acb9b2bb30bb85867f3ac2562c10830693f72c642d91a0e2ff37ceb67d6adf9. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QMEZE1859707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab43482458638760a7a872b1b9ec8694add13eaf2e3d3e2f683d857772dbd8c5. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZLBC2100464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fcb70d840d511bb6d5f4c15fcb03e66e67d7897c8b515f17cc0512c36ceedbd. 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/QZLBC2100466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca60da75cc56183c709ec1edd66afbf452310af760ef75897480de8b42595df3. 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/QZLBC2100467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02e391a955ee4946bc8a508a021aa75b6040193708e6aa7ed37354f77230bee3. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZLBC2100468.
Indie/Indie-Folk Compilation - Spring 2023
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bdea30c9ae2727aafaf000b99efdd35d66c5e37dc5b8783bb89a05776b31ce3. 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/UKTPT2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5704f39a00cc99fddb19e57451b512d9fd98a53e4d1885139ae55ad7f99f2608. 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/AUMEV2301389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x939144d8e816ca9982be2b223a7fcb1fb9ff2df071fe598df617476b3dbda53c. 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/TCAGT2305164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4c3a172fd4154b74df61116bc46a0d68ff3459785d87f39fb979a2f1f61250e. 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/QZGLM2324108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f4a29482c8cc1aa4e0696b48345aab62b70209aaca0a5f50805615ff2a95d59. 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/FR9W12244082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde8590352d1d291eb9d75e5367413021dd22305673bf92c1cc891e48ef14428d. 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/QZTAZ2285621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x339c0e8d7ad21786595636430ad4e9325a267eb721e8f443c23899938517bbbc. 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/QZFZ42307807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd72f32ad9d37f25bae0675bf38b467c180720876f81757fbceb7859e056b42e6. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USCA28500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfff92c80a7d7f9d95d58dded8179e58fb66067f29a5af9cd9ede2ea1ee8ccbac. 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/USMO17300042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58afe1e4b56661e081a8c80f1955172a5911804a915be530c43c9b1711d8d212. 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/GBUM71706492.