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 0x6d070a9bae9d63eb2c77add46a00b812018ae04cf8de420db2c65121296475ef. 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/0124e480-10a3-4228-bdad-466aafe302ab.json and https://artists.proofprofile.net/proofs/artist/0124e480-10a3-4228-bdad-466aafe302ab.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 0x8616f5aa0edc4fd5d5f69d25c1d85a39c39ab001ce9a8e99c54181879d084443. 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/QZNJV2130604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb791a2a3f1ca8f08e17981b925e7ea3f13c0c08e26caea910e45f8808447bca8. 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/QZNJV2130605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb75e1de16dee6b9aad5d9decb0e78159fa3369c9427848568e57c5769a8953b2. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:04:05Z), 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/QZNJV2130608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x497d59ec359aea7774a70c2749b8f8a04daa36f12ae1974320cdb80d9e6e3aae. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZNJV2130609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd662faef37e92b3cd47e1e588a5bd6451fa538fecb470548340f116c1da5f3cf. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:03:04Z), 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/QZNJV2130612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdf4134ae1de11e1137d0b3c7f232f01412b8e9f2d4471d7bb8a0acb44720c1f. 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/QZNJV2130614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdcb767b28962d00ba8f2f50c3ce012ba3906155f9a6d08616d434f511f45a46. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/QZNJV2127206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6c25d478d336696226df2a55e559c4ebafdbc57b62ed818f25677f9c92ba5ac. 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/QZNJV2141324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5f5820d6085ae429c04c76d4c675db5cd9b1242599edd54d44031d06b835d11. 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/QZNJV2141325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcde436a2101c7f840a212c1870d8de3ea93ee9cb4f0ac4074bbee28a47afc046. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:42:53Z), 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/QZNJV2141327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1c3cd1e15efe6380676554955c2907a3538930f59c5b67c4990feffa7e86cae. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:33:01Z), 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/QZNJV2141328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe137b3694e6fc1f4652a270adceda59a9cfef07ed1073ca821c85bf6d9feaeca. 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/QZNJV2141329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x371f858533e4a4bc21db2f0cdcd4e88e2f1badf3ee2139f4e292238604a97ea8. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZNJV2141330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x228c2257f5c8a542a26eb0f50a5ce196ed2caebb85d0e7cf22536924e4e19487. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZNJV2151533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x978df902de009f829594bceb303d729555249540b7e64a8d1dd8be0ecd1938c2. 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/QZNJV2151534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf2e0c4f34a8491c6d68033dd5ebca976a56caba25b401749784767fbd20427a. 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/QZNJV2151535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaa70b42e98871021eb4bcd931df683799d05a4f4502b9f8e908afd57aa47679. 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/QZNJV2151536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb230209907766ede0abc3a6489114c23aa9adee45a3224e4cb6f08f2e2236496. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZNJV2151537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c6a32a2ede38c508f5fec75d23b6346ac6fb85bd278d892da36288a99a39815. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/QZNJV2151538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b2b105ffbb32c8cccc40e9e4f1f07bf05bf4bbbba61ddb871044485ef7d35fb. 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/QZNJV2151539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe921e3c95fb7eb64f210bd6ab519ee6c4b71d014267f2f1cc3286d8d0cfa79a. 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/QZNJV2151540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bc49fc7992d8c7d8d196f2482a4f4cb835a6617eab8c28b520a0a57c0e54014. 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/QZNJV2151542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5efe96152aaa45975c49c9129be601eaa1a7edbbb92b5519a3300b5fa909f3d6. 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/QZNJV2151543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb40acc300194f3dbd43c07f00cfd08fc0c7608750d6a09536d462e5a49132b5c. 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/QZNJV2151544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5986b90d532848eeb8e992a667ffb8461e0c5526e71e9c76eb76576a8c07765. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:55:15Z), 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/QZNJV2151546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4a1a645da7733dc7111be4dc9775b981a80691d86fb1e3493a0cd22d0449d5e. 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/QZNJV2151547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6b1f4845d2e694224bd84433e6fccda36de0f6895c1be58a82329dc909509b8. 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/QZNJV2151321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a340c4a947f13cee17840485bbaba2e9d155a22d4f0bdf05636578f81e1b79c. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZNJV2151326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe77f07a72ada080cf1d535f89fe84187839c93c35e9c260b7904bd301afe0591. 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/QZNJV2151331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e07106642a2af2d67678501f22c3c505cddb16b967bfbccec620264d9e19f37. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZNJV2186856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9f93d8545bb3dd3dc736a8664448cde2b534e2ab868e1f696a57ee974ba896b. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:35:09Z), 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/QZNJV2186859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bef47f7acca031890237e8a08bbc69151f73fa788335f4210d9412f07728e37. 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/QZNJV2186865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5fae574c3c4219690695e14f13dcc26d5d3b09ca7e79e2d10df58a06e846df7. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZNJW2184904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x196753ace43b6ac958135df6673422351f4623aec2f26ab74ad61a6c790a5582. 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/QZNJX2150217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6e21401be5b0a3c7b99e823e21c1aaf9e58ecabc839b8c1e8cbec39902d3544. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZTPX2157068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e65573dc5358ac972d6b71609d5ba166324f853015b38aabba92114d40ddaf2. 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/QZNJW2291078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3d508c9c32e42c9c35a3cd037bf6dc0e74405681fc4a0448ba7ddca732d91dd. 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/QZGLS2333213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43fc948c2d74b3198ba76779bec1785d816d2af292dfa3b6dad6f62338f8cfe5. 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/QZGLS2333214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x087da847edc36bc48aa4d252d99632ba4f46d8dee67befe1e0e3220b2216cc1a. 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/QZGLS2333216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77380dcfd178fe50d7a194f88cc0e1d436a4bd774a447e51ddb27dfbffc7c81b. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:10:54Z), 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/QZGLS2333218.