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 0x7432b9b91517a4de0573a15ecb80522379fa493140d0232cff6f2f8bfc5d86bf. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2140d3a0-3c40-437b-bbfb-c306e24af717.json and https://artists.proofprofile.net/proofs/artist/2140d3a0-3c40-437b-bbfb-c306e24af717.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 0x61a63934f01217cafab4f03f95a697c601dcd87ae70874a426d685f90f161d2e. 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/QZTBE2313197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x955abeca42efbfc51c519b73f23212cbf5864df1513f312e00f930db5e1d049d. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/QZES52552607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07af70a08b712f34953990f52be4d477eef7995799a7dd5ee3b016b39a964e57. 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/QZES72515073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1dd6fd0252a2bd3c63df452b3eaed097b90267bca399439a1c253a032f68146. 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/QZES72515049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda60a190ca9828ab4fcac2a2998733a38cfa0514a430c6dbe00b8b92ec8cfbfa. 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/QZHN42580293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15ec2128e72d7182093d7a931ea1c2361d9a17bfd98d84ec5e77ba69333061ac. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/QZHN72539956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x947a19ee7098a7737d12a442d6eb8e0039e587106e67ea0f008281ec5fb2c93a. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:06:45Z), 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/QZK6J2569965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc67b51a15afd5f4f85ce9279c7dbdf45942f78da3b8ca3ad12f51faed21e779. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:22:19Z), 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/QZMEM2572178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeffe935a9eaaa93d5204073677243967205b6917dab1caed0ad84e200a615027. 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/QZMEN2553029.
Songwriter Drum Loop #2, (loop to jam with)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa72717369821aa00ef795f42c2de2e11423f4607b2201ca192809b7768b5bd21. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZNWS2554581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68fadb3a5c11adde7787fecd8f5fb032f0f6e2f502cb0ba1f2bf4dc76cf195e9. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QZNWS2556375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcce3fbd124fa1d71b2c97cce35ad915f3f27728ab1a3990cb1cbfb1cf2204737. 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/QZNWY2509930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdb39f7fcc9f07cd90d5ad979dc0f9b636ae936f3a0e19a0c5c2247593b1ddc7. 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/QZNWY2590104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x840f7aafdbddc09ed8e33ccd859a6d91635129e1544d28a840a91e44eb117016. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:20:11Z), 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/QZPLS2593181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48960d9028d41f51e80cf97567917610290490bfad957c0de0ca8563b8361e3a. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:49:48Z), 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/QZTAX2581947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d1282e837229667a11030e1568884a21723c7ce342744b3105093d7339ba73a. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T10:49:08Z), 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/QZTB82549160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b6258cf97f620a4ab4cf1d04d46c2a646a80a90fe811c1c97a0ca14ac081200. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:41:00Z), 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/QZWFF2525199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11a9296015d27ccbeaba0bf71217745c5cb2969eaf164fe34170c27274f49fd3. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:39:14Z), 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/QZWFM2576177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdb57f23ecbd720614195fc991828cf0186086ad3892592149f6f76151e5646c. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZWFP2515723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x925b1ddafd9516a369c5643c8cdd83375ac39e57ecc16ae6a7fe66bfe23253f9. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZWFR2513497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x050cfb0d8d9e012dbdfb042f3f5f9aa0252e42d5948e5fbb0b2ae552761dce57. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/QZWFS2556326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bb732766f4be94cc6f641ff9e4e16499d78765b467c4d117e18d534863ea4cd. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZWFW2516592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cd5a7a762edff3247e795c11d86203e6300ee1e6bf467cc0f3d52878f6c3e96. 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/QZWFX2570175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf138a6bf694660271a63b08295d56da7ab7b1b07d356eeeaadd3eb44209160d7. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZZ7T2573466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a163484a7230298e20f450c9fcc74654a7b2c6b499ed8dd19241115919e8c4a. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZZ7U2518687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52309c5294ee82601141f67ba7bab814dd128e6eac388f570ea7c7520b8e3b37. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T08:04:27Z), 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/QZZ7U2518855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb27603f9acbcae5647670747d43457b61a8eb8bce7016caaaa70bb5a0cb1c17. 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/QZZ7U2521446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0f65dad23ef54b92ef6ce72f8f69c10a177ad8d7649110e152bd72826c64013. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/QZZ7X2537301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2589bcd89c11d9b20c6feb13c934bc06273360a9c83aec58625555fa2caecc1. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:17:32Z), 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/QT3FE2513198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4c3e047e8b8391807a2bf96b3b0892964958ce4f98a2bbaa1d5d66baa2d3de8. 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/QT3FF2533139.