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 0xb4696ef33308404943149412e132aa3e7b45a769640b4c50eb30a348d7ae686f. 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/915dd261-c191-4b1e-84cf-3bdb692c5755.json and https://artists.proofprofile.net/proofs/artist/915dd261-c191-4b1e-84cf-3bdb692c5755.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 0x53ae11ce4284b3f3928372c7d2e705957f1b91f29d22d20e11111168e9498d02. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/QZRP52282145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9d8ffcc5ec08b2287c3f61052082fca6c00130da55bae850fb6827be6ea65a5. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZRP52282147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x678f298c93ac0a072003c662216f68cc263c874f734f43bf2466c828733c7782. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T15:54:00Z), 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/QZRP52282149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eb4a9bf65397bb3047fc1c0ef28c8bdb7dbd7c41d8f8c13329045a8356cba17. 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/GX89G2373488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0f6c480f30bc9162f3f28b9d5b010149dd668e8172b1bad937afec74f9b023b. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:18:18Z), 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/GX89G2307522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x262bc214b98fdb8bb890d3cc480c3265d285cd614f98e57c630be0ea0b4a11c7. 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/GX89G2335626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2079caf24dd6ebe822b574cb567ac08c7c9241eb3e07250948350a9303cc98e. 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/GX89G2300817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f0f5db7b4e229a686f5b2576583a6e1547cb0ae3ec9b1eb037f259c3d4d7c36. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/GX89G2326628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x583b0c2a838cbb7434bbdf0f775de791d513f3d0c476b6dc310e88a54600aefb. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GX8LD2392787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b2687abb55fe754006cdbc91235acd0f0253c27076795ad2e1cb53fdf31b50a. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:23:20Z), 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/GX4R52309292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45f11a3f6daf30b9429a90629ebfac028fc6bc7ab19e46afd0e80ab148d3d197. 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/GX4R52380647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5695bab2d4bbf776f089f697397cb691f788b719282576f5fdbc70669247182. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GX4R52337384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x141a7031c2713e9497aff06ac8043813a2b79a54d4174926b806fd37741deeee. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/GX4R52315760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3788b591c0471e7fcc79e55f155856465bfcd529f6543f102a31a5c41c87f791. 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/GX4R52321484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8f96aba72f56ce424ad9c6cc9ce568d82c887ccd213a01a7f5f42e2c9b57a68. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GX4R52301720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95a931b07f68c2b18a9781f971b33cf5bff15c09d7b394348d2db7c54ccd3207. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/GX8LD2431740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f96b9f3b23687f3047da2ac6e4f6487a73859893a046b1f135487e2644eade4. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:28:48Z), 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/GX8LD2452388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87513dcb3972f6656aaf540b21ad543f284bc7fcf15c660294ef07c0ca8b8d91. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/GX8LD2421073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4a78ee948522246b17373f1addfdd110a409dfe5dbcea9d848f73ebd2e84303. 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/GX8LD2410274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d72312dd2b7e07c89dc18595b7878419b65a86f9fea5c7b0e814172c8032111. 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/GX8LD2426103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99547583d0dca5f8e62fc1326f7404072b539bd0302a5c95ba4b75bb972c1dae. 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/GX8LD2413052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf7dc86f269947eb517f84dc59f937e61be1611056c57de50fa6a9e30b7b9300. Chain 2 (Bitcoin): anchored in block 958785 (2026-07-20T00:22:24Z), 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/GX8LD2460416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4dad9d59434342bc687581d5f41c5e619d20c8e00edaf97b92f33468933fb39. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/GX8LD2427363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11247c0a21959cca0f313f7b334efdd6565215e867a39ab6c1da63f89d79b192. 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/GX38U2483670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f557a130d659b9ab670242091bc4f3cea12906047ee9001a054aa8bbdc09ad2. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/GX38U2464048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18f54e6d605cf75af7df6c345176e6a6216892cbc81bf06c64c4d2df5d7c43bb. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:18:34Z), 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/GX38U2445718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f1f74cc9752110a1a3c35a16b2334e0bf66ce0bcf64c6c773230c849b2f9dbe. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GX38U2418740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf387c59324159a5a9be01c0d878535ac5f155eff1a7cd84c47e2d120d74ba5a. 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/GX38U2493592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2d39c0b3121f568743014d8cd95d6bbe3ae161d96693fe9dbba0169653c1f64. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/GX38U2491362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1729b6175506e10b368f5e733f297b5c61116e888169595dea9d609ad308ed81. 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/GX38U2461906.