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 0xee3ba48b2786a4f9ca2e17f1905d94d3942511deb8aae758b63cbadd9577d242. 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/e3cd1e28-e73a-4431-b0f2-8eac4414f51b.json and https://artists.proofprofile.net/proofs/artist/e3cd1e28-e73a-4431-b0f2-8eac4414f51b.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 0xc8be28113593e736015a20cdecb0d07fb6fdc15fe178455f2964619b26c05d5a. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/QZ8LD1937094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48ab07a71b04ddfd90143004e8bae54c98d5b4e4e19a02f78892e6fa89e66c3a. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/QZ8LD1937095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32f74c93025126c5bd5a9625778786f5e285ced3d4b09f1767ea5c9d86b9b7a2. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/QZFYY2096294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd166e40b36f36cfc35151fd03e52bcee5f6c554b3c2c3fd9cef0cfc5a5e70082. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:20:39Z), 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/QZFYZ2038354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8baea70f0d0e2e8cb40e3faa1998d76949ce058b2e743ec192f6f10debab8b60. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/QZFZ22062822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x666ed21887176ac8e2c39dd57dc81e9176f6981d87c93653f982d02b15a98c1d. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:30:50Z), 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/QZFZ22075090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ef12d2a7977fd251ffaded3411734ea34446b36c648057cbd42925f4fe941fe. 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/QZFZ52016646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfc24baa769b1d39f71099b315a8d1f94309d553f3e4f9eec153f91046507a8c. 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/QZFZ72065187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x752412f7665c4cdda91a2494dc70572c84eaae90ad2d2bbff44203d602da2604. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZES52162867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa57dfaf15dcad1ff7596e0dc09bb8b82cfc82ece184a2986c133adde21c49eb6. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/QZES82122838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5c05ede4fa518c5b4b29358712b7bcf68fa643b696b7843e85f2ed30d2137ec. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZHN52167178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77b74d80ce21f363bd50d85554ea5266484f1bb9e209c0a21294c63f395216f8. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/QZHNA2117806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ac3459720cfcbf02c07274e4528dacfee65bf39b8a002d6f9c638e9ce80d0ee. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/QZNWR2157936.
Halay 3 (Turkish Zurna & Albanian Ciftelli)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1697b117f558664826588febc0dfe2d6e8dad7c5a807c79bee96d81e66e32e2. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZPLR2383689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1edf7c4690f93878c768953bbfca197a6defa7167df1dbdbc3435e69c88f2100. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZPLR2384431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd899922c8deaa8d79e450cdd1303d5af58ed382c47040aa568a560f79ecca382. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/QZPLR2384436.
Cendere (Israile Gelemedim Filistine Geldim) Deep House Car Music