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 0x682714d3536202d39e8afccbc2c66ba7841218cfd55d81d8d469427e3c5a2a05. 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/1a93a18c-6a10-4eb3-991b-5359a5f7d256.json and https://artists.proofprofile.net/proofs/artist/1a93a18c-6a10-4eb3-991b-5359a5f7d256.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 0x21cec42c250cd2311781befe0c75d825e8c87e859ade96ddf19e0db332201cd1. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:35:44Z), 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/CA5KR1037645.
Open Your Eyes feat. Lara Woolf - Original Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b592d815930c32967c3d2110c2b8afca9fdd6e217db8c24778c3fc3bc069908. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:57:23Z), 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/CA5KR1038739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7d2955cab70aa48abac8a4c3374290fd1e4260b57d35fb1b1bc1df5f6a83ab2. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/CA5KR1039395.
More Than a Feeling feat. Gamble & Burke
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc233f1b8b26638fea595cacaac8ce97912f0fd630b3081ea9d5c2632b38c3dab. 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/CA6D21400103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96373ba73d2c8e5f3270c729d30eb21f5e69de70b7eca73bbc4d05901c90a3ff. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/CA6D21000350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96373ba73d2c8e5f3270c729d30eb21f5e69de70b7eca73bbc4d05901c90a3ff. 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/CA6D21000350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f71a7637940645d8cfa463db227e1037ba0b2284dbb469ae2287419beb6185d. 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/CA6D22100516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fb0b856f330fc9092e3375c2ce8c638ee3c4d1b99a4ed4199a540e4a5bd3347. 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/CA6D21001041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16c261ffaa4c11734438a45bcefc662eb1648e1eb981b463cf20a2659a993ca2. 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/CA6D21000401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fb0b856f330fc9092e3375c2ce8c638ee3c4d1b99a4ed4199a540e4a5bd3347. 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/CA6D21001041.