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 0x7e9fbc06c52a9754fa6d241e36994a3a6f3070a046657660657d23be5aa87eb3. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f991fdbd-c56b-4528-bd30-cdf8e6a3e9dd.json and https://artists.proofprofile.net/proofs/artist/f991fdbd-c56b-4528-bd30-cdf8e6a3e9dd.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 0xeab97142e9ed3ff869f261369cde07f46ae908994199d267240b9907337c4a13. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:52:43Z), 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/TR0280904039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaec4dc5966fda560981b0b520d74e200c28b2b4e38bff7f7dc1e9de0d2efd003. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TRA170300042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89515653367459371316f8cb1f58e899e485dd08843643533c1b41a11dac7a59. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TRA170300223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec9b08f0ec78ff8684247e3b234a02c9edf851f3859ba3c6bf50f0a4be0ec80b. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/TRA170600520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa887c1484e31e1ab899dbc99dfc48e12f9b54b973c099e2133366c0eecced41. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/TRA170600528.
Egyptian Twist (Original version of Yaralı Gönül)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2472867be5e8785a11d8134e0b0756d32ab79d6badd8913faa0e1761f325aac1. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:29:55Z), 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/TRBYM2500021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93af3cebc818333f9ded75866514ab170d329cc2fce89e6e455fe9a991af2f33. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:07:16Z), 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/TRBYM2500017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x396f93ef86ad9fcbf606171db1aeda80fda7f76ca31d99f6c6f642d8c361f6f2. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:21:50Z), 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/TRBYM2500020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25fe37daca866a66f1b734462c88c4a700b9b31c343a29a8e38ce4f55083fb71. 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/TRA170500303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1f98f05f536085d335206a75610c312b7f79215d2260b855013563bf9b38a4d. 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/TRA170300227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda4ac6f2258e044d1feafbe8a247403266883174da08e202a4bf5c269a8cae4f. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/TRA170800703.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x274966677cb2d6e714ba1ae4ee177cbe425d689f48c8518843bf956e8231d371. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/TRA170600523.
1. The Beginning [Stories of the Danube]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x238253a0ad61ede5ebc2adfe3c6352d77be96d8f43c963f46902e2e31177b074. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/NLA509605801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd61dda8607a0ee177f97ebf82a3534d6045d04340cf15afbb6fc1b36076cefd2. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/NLA509605805.