1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xf73aeb15c3c774915c39b3a8774ed087a13373dde7fec2471a89792c0a864111. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/33d564ce-e476-4886-b252-cccf58753c02.json and https://artists.proofprofile.net/proofs/artist/33d564ce-e476-4886-b252-cccf58753c02.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 → block OTSBitcoinBlock must exist at that height 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 0x135cdeca03d66a462d5444e1677d1958115062fa99bff5b0935ac06a2fb2cf33. 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/ES08S1600901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18cfe425bef26bf100811382a92abf8d7eff61b1940629546309c10e85aae478. 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/ES71G1703422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e4d0f290bfbc6fc8c3dacf866c638bdeb98aa6731c6ce8bbf583f051cc059b3. 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/ES71G1703424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7845266a18d94ad1e847f13f1949612043e306e0a41793e8fdbb70a3090f054. 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/ESAAI0264099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7162efd6ca04289fa396166a605bd6bfab293e24cc087b3e9c90da83e01ef931. 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/ESAAI0264100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb84fea5e85125e9c0b6b3e1756b8b00913c5c5d5498bbbac7d94bb43ccdaad68. 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/ESA082313796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9553e4d54339739b81985b1ec447c61a4c4ca2a4e2c06905231f5677c2f02a1e. 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/ES5301662553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4161e8a0f0bd4542176c1afb312acb487a070e1bd34c0b08f376bff1e58ab13c. 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/ES5301662557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f9e05bf4b7b05be5e659703020758ff1252b00172effce1883af6240a07c507. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/ES5301662558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54608edf3b58cd909bc5f2c1367709570e75f3c943c353e120ddb9e03bfcb69a. 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/ES5301662559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd47e20d16d7eefa7d983fa630628134c3323fed798f8f1c4cdc7e1d30a6c9ffc. 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/ES5301662562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbf3e90b4811b1d940fb2a33620bb22947b3b20de58732701380bcee95128f64. 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/ES5301662564.
Bilbo Hiria Irratia, 20 Urtez Euskal Taupada
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09995bcc11535cb9a343a8fd502c69e04b8a86210ac616272b425fc2f3df3b8a. 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/FIMLO2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bb0a7cc9dd26a5e6ae7ffc3db685cc12100c9c24724add20d6139bf810b8124. 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/FIMLO2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bdaa8afdd0af84530dcb31fe890a5d6f9110c8e4c974972a366b7b8f7ac5de1. 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/FIMLO2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7896cfb55f5e70a7328e881c34f4b0985ce3e2cfc9ece36e1a9dccaa3bc0c2b4. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/ESA082500410.