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 0xcc28c06866463d24d41cb527907242aaeacb003dac108e65029b048acab89f5e. 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/f69acb82-d636-4e30-8fde-faaab59ef835.json and https://artists.proofprofile.net/proofs/artist/f69acb82-d636-4e30-8fde-faaab59ef835.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 0x7c0a15422cbeaec3d186ad1321cd966722653ecc25ac674b78daaefa20843acb. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:24:44Z), 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/BXKY72100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e5a862402b5ade2ceda8e544202e0095adc28b0d4dd5f053bce6fcca7b353b7. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/BX08N2100023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5787bc896b5fd0d5ada1eee66bcb20d5c38f468c9090acaeb16031d7e147850d. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/BX08N2100074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x090fca7c35eaf6a734b9cbf503ac1ac940c9e49802a752fb54287017f1df97e1. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/BX08N2200283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xded195709046bc911469e751515ce73fb195e55901ff0619b2e998fbd370bcdf. 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/BX08N2200284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca5a054ad4cae38487d9b78ccd52a110a389abe4122dbe90637cbc551c68da2d. 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/BX08N2200285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbbc30d7d36c706b8a81c21d99a5ceb09e2391da218eedb7277d2589430788b1. 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/BX08N2200286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x090fca7c35eaf6a734b9cbf503ac1ac940c9e49802a752fb54287017f1df97e1. 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/BX08N2200283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x529a89c46f5a21d0dcb59879efe15f4474f429aff33a1cd1579ef1d82cc81be4. 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/BX08N2200287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61647ea3bbae8947dc134b55efeb4cf781963f7f6a1682310df935704f933b10. 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/BX08N2200288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd31e39327ec6e56062ecdaf9197ad59dc54bdbbd0305cc175b2f8a6582cfc11. 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/BX08N2200289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90937ba7d9dbfbc9ba1c8b722ae36d45c690fa6e13547765470c1a7ebbb9ce45. 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/BX08N2200290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb3c1629c5e83ddc5778e824d18809044de2a891a44de4b35a6ce3919c7c60dc. 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/QZW9L2255255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c978ce5b0f31eb9e599b63254be23851a948247902d9d566f4036525976860a. 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/BCARL2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x496857d30b9916f5faa2ae2b53611c77cebd35e29cc11905b694b1ffc4c4e8a0. 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/BX1KG2300029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71263ef88fec4c374ca989bc2d258ce852159387791a204a13475595dfdbb61c. 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/BX08N2200065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8dcc0367dfb2decd9311cb28657a291403fac86c42a221d8b38d24cd219473a. 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/BX08N2200034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3849f8e9f8cebb583400bc3ceaa2782b23468b7ecfbe2948b072059dc2c7082d. 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/BX08N2100093.