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 0x987956bce412658c1b2bf656fe8d052d1023d246536ead91beb4e618d40d73f0. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a6f6c138-f428-4982-871b-169c6290a19a.json and https://artists.proofprofile.net/proofs/artist/a6f6c138-f428-4982-871b-169c6290a19a.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 0x6e686ca82faacb74e4fb6f7d139a016b1f476b784b5c5a49a5e7ab076cd94fc0. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/QZ8LD1907821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11e319d6331b988791feef0bd7616a96956a0438be3a597aa17b04ba2044fca2. 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/QZ8LD1907823.
Old Town Road (I Got the Guitar in the Back)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x728fe80ae1edd4199b1cf20e0a580201cd7897022e65cc7b39094cc65d2fab91. 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/QZHN62052625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf566f9ea00eb348ea1a9edff20417ccd0212cf067759c3e9ac345a5d99a6327e. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T19:13:11Z), 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/QZK6K2000631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a37527b3da92e2f368a018c57e466a854fb6dc38d2c3f8a7815850d9c5afa3a. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:32:42Z), 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/QZNWZ2036449.
Amish Whip (Versace Diamonds on My Walmart Drip)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5736a885d5495d266179b2734ddf9ae7f044c98766af094761d9eb81fdf309ca. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZES82244447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea9c090ec8905861c6922353e107b98d134b7825ba359c97ab27dea551c50486. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZMER2432992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc552fef93d6325cb82d194adc9da13e0a4c1ac9feeeeecbfd07da37c024c8a0c. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/QZWFR2428575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33b21e1cf10271b52e20043415ceb6ad0da57159578ca3eaf78b99dea6e8cb44. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QZK6H2505868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eb1ddb6241bb3e85698a053617c2e892e895eb8e3aebfd07504b5d902a3db75. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/QZK6G2570901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe47d9b01def6b4b772ae3fc1ae1da812f847a045cfb25cc43c80097b5728017a. 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/QZPLR2535610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x608e5228031329eeef2e302d0021df76c7c6f3c54154853e101b5f094d99dd89. 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/QZRP52547912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34c99529755cc2c973edb3e286d383280c43666e68de19d559fbc7f455cb14df. 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/QZTB22500708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d56604b9f31f9aa5d5b0768fa45f04e18494b76f53172c67278b2ec11d5d902. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZTAZ2598838.