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 0x46017b3b9d8452ccc4064b33317350ff160d2299cf67d7c123d36e77e175f596. 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/b6ecede9-d7f2-44d0-ab67-1c2f038c4164.json and https://artists.proofprofile.net/proofs/artist/b6ecede9-d7f2-44d0-ab67-1c2f038c4164.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 0x2fff9196947dbe132b7f3e8f86512c2334aeb549ae380b66971babcf0aca90cc. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USHM91742370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56667e3ab530fa4cbde1fb1b532f2676eff5fe50f956e497301eb34ba4d08c39. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/GBKPL2176743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcab9e30811ddefcccbcd3b22858d858c58d51dff062aab158d70b58a23f5ccb6. 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/GBKPL2294834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56667e3ab530fa4cbde1fb1b532f2676eff5fe50f956e497301eb34ba4d08c39. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T14:03:54Z), 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/GBKPL2176743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7c7fdef6793a3636fae39a4d0f10ca5758cb631427e0016830c7846c6c6bc68. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/QM7282329346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bbfaaecf2e0a2da3d7edd4d06e50490f1dc3ad59f506a87d561177c81b3f32a. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/QM4TX2383196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7c7fdef6793a3636fae39a4d0f10ca5758cb631427e0016830c7846c6c6bc68. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QM7282329346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56667e3ab530fa4cbde1fb1b532f2676eff5fe50f956e497301eb34ba4d08c39. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:10:54Z), 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/GBKPL2176743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba961b005c9c3898b198c2c2d115eae31b52b44bea131fa7f9299e5996deec69. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QZYJT2400076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb32950dbeedca4bbe5a1bf829ab992f1023b0dc60efff260f4f647e8fc53e030. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:40:48Z), 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/QZYJT2400157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1352312549c36f3783842277437b86b39364fb7b7ed2be2da071f0decd3abe7e. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZYJT2400164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8972a7d8c8e885f5570db376e74744a86e6471eddba78aa3c8ab07bb7f2cac4e. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T01:41:10Z), 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/QM6MZ2500560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x408caf61043ad426742807d0731ad310f5fa273c5798bf810263b189c6fe8931. 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/QZWDW2543804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aaab05db3cd064af13c6387d7ee07febd84656380f56869a60ca973f4d4338f. 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/QM4TX2575631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1352312549c36f3783842277437b86b39364fb7b7ed2be2da071f0decd3abe7e. Chain 2 (Bitcoin): anchored in block 958861 (2026-07-20T10:02:52Z), 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/QZYJT2400164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb32950dbeedca4bbe5a1bf829ab992f1023b0dc60efff260f4f647e8fc53e030. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T03:52:09Z), 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/QZYJT2400157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcab9e30811ddefcccbcd3b22858d858c58d51dff062aab158d70b58a23f5ccb6. 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/GBKPL2294834.
Instrumental Indie Folk: Music for Focus and Work (Indie Folk Central)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2e7315026a3e543c0594d9f8f5b7936a861e10b70b7e0511f035c01b74854f2. 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/QZYJT2400394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5aa805928ff702eaf384fcf7b971628ec390d28d5b233a517537f7355b1e88c. 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/QZNJX2409034.