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 0x0ba6e0f913b7a0135280b293d1d3e5978dcbcaa52bbdffa546b1d88cfddd8fbf. 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/9237af85-cf7a-4702-9090-7f970f7a2257.json and https://artists.proofprofile.net/proofs/artist/9237af85-cf7a-4702-9090-7f970f7a2257.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 0x4fc21804b930b72d1cd9c5e272f6b0c099d887e1bdafa57f556f6717e4342bef. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/TCADW1859448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa968103a44231c19f94607b7158b0505f7a1b5634668998ea41ab043f7b1f3ca. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:59:39Z), 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/TCADW1859455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fb20e16b9977fb283a220b91e52f3e790172e8c44e8532db440b30a7a0a552a. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:21:57Z), 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/TCADW1859462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf55c2037c6f88264ffe7a4aed99fffc695f1b4e6beae4c9cfb48196c60b5b4f. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:52:03Z), 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/TR1151900153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2d6b6760c70b8c74317992ec5205b9b27927bc0cd8a2ca40518cda40403b0f8. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:22:20Z), 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/TR1151900345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2b0b2e36fe1ed1f7bc9b39dc2a979ad2c246ccf7f89c7387dd7811d3633036d. 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/TR1151900152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8a8e7ca05fa0f92233a56f718aa3fcf5528da17f06e3a24ad2bd8e6d6011e13. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/TCAEO1938942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc31cfacc8d7f0c119cadca0c7c078105cc61377784acb02670ff86c1ea2d2a0b. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/TCAEO1939058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe63969e3c0452b222ae30f3d59d18e38a44ae094c63f7a56eb1715c337403805. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:25:11Z), 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/TCAEO1962374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2d7fdc8793e79d7151d601129df2146f6f6d19df2ad369638b248843f9e65c3. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TR1152000052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31b773c2c408f6eac790084fcd46d32b912f86dcbac70ce71156b9ffad4859a6. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/TR1152000039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2d7fdc8793e79d7151d601129df2146f6f6d19df2ad369638b248843f9e65c3. 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/TR1152000052.
Tu Meşiya / Nesrine / Eman Dilo (Mash Up)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d2e9b1dda995ac994f8d1a48015e5148da9b8e9804c678700bccb7d0a404809. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TRBGV2000825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ff7aaabe36738d33e80945eabcb82670ae3b222c1f200c129ba0cd730366b56. 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/TRBGV2000831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19c2b0c47833fcbbbb288ce4baf032bebdd562b61c7253b0de040cd12de9ecab. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/TRBGV2000827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38bb46b2ac7965b37e8d4433fc85064cfe727f4a80665a3f36d968832a066b05. Chain 2 (Bitcoin): anchored in block 957551 (2026-07-11T10:03:47Z), 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/TR1152100126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa53bbef76ffc8ab1cba09a456d55cd8131607f2a6a645b5e6157a0cb8e4d1242. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TRARD2200024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31f22dd5b9f6d0bb3f15fc94ae293c9eb9310bff0abdce3414a9b0f138e2d7df. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZZ792494166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ba8f9f7362889e29bc0016af4a5b6d0f801ff7068faf8a64719b355c940bcb5. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZWFP2583548.