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 0x5e255cf5224cf8b3e85d795e363bb56a540cb85e1f544070ff9d24d4cf6f8c00. Chain 2 (Bitcoin): anchored in block 953674 (2026-06-14T19:07:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/61130967-2f1e-491e-a343-9773b7c8253d.json and https://artists.proofprofile.net/proofs/artist/61130967-2f1e-491e-a343-9773b7c8253d.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 0x7bebc13a89e5fda39630dbff82e5349efe394420293cda053510e4c070f5d049. 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/FR10S1989724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x140435b2c0e75d792bebffb5d471c910472b37169a19c0d794a7d9ccb045535d. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/FR59R1952292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bc0819c4233a1b87d127f21be71b9245ff11f9a17335dea7da863e6b60aa914. 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/FR59R1987678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb083dd55e34293d7539b2a914ecd887a5e9955149f088a438b2da53cbd2608d9. 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/FR96X1966229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x140435b2c0e75d792bebffb5d471c910472b37169a19c0d794a7d9ccb045535d. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/FR59R1952292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bebc13a89e5fda39630dbff82e5349efe394420293cda053510e4c070f5d049. 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/FR10S1989724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7123a3c4272f902ce28d33f45a8b09b7b84f827359db5d2cf2a862fe7f488f1. 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/FR10S2364468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc324a82c00f2ed6547cf6ae223532c67cffae90e81599c354bc738f4573387e7. 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/FR10S2364469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36d29a1eab98f3ab203b2b64df7a7dc018980991cb526ca9b133fa1a3fec384c. 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/FR10S2364470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x925fcfe075c8758d14155d05d4a2101a0feb55f628fb0ef850f2fda04f9aa07b. 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/FR10S2364471.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3915920c6e3dc6ff3ec27d8596be0c6b83169ec5ec28771922dbd196a28f2e6. 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/FR10S2364473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7360c6c81273a62214d841ec4239711686e562d5f97c011a381cf7248cc1757a. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/FR10S2364474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd81d665658bd53900ed43c7962a67807c0fa68c0002b1582889f09204abf43a9. 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/FR10S2364475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca8148e5fa7f8b911a7f0649d25ff404ea65d81c3a22afca1246efd1cf01b8da. 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/FR10S2364476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8ee884a6a06b364fc7d15ca6724d54df269c5632560f5dc7181b633056840dc. 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/FR10S2364477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe320e626765ef41aa54252a255dcbae6549ef39a8703871c0674a7527b009d5c. 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/FR10S2364478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7cf93e7d08d6f44ec060c57e634aa7192359977784ab9ae15562b2abf0f8392. 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/FR10S2364481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2408778ce4e148078b25e412dd30a39b4c2bca0f8195aa58700b127590157e57. 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/FR10S2364482.