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 0x2d81235d90cf8f2431c5fb7c56a81a58c5d2de49142d86594b3861f148da22cf. 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/dbe29960-aa76-441a-8f7f-3d0f557a687b.json and https://artists.proofprofile.net/proofs/artist/dbe29960-aa76-441a-8f7f-3d0f557a687b.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 0x4bf6804b3b7398d5461b46ba5ba32ec0e597f4705840e1426d3b179144dfa761. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/JP92A2434278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6be8c9348e96e5deb2a5eb9b53df87d80b74622b8e8782f70e8748429c31e450. 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/JP92A2422073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x559d94ba8460ef8adf2fb53d8dbda8cdb9b892aea10d82bf9b7df6886bc934db. 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/JP92A2423245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x201abe56ca9894d1eef8e2b7cc481b2f0ee9b6bce79ffa6d1235515a364d345f. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/JP92A2424013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x260d3021e1cc4e44bc6d0648c1bfa841ec8af408404db05eea459862582072c3. 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/JP92A2423913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16d772c57a3459d73b783f322d0db9c9c6ef16c6d56a2d197d06e30ce86589dd. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:49:34Z), 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/JP92A2423915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf6e844004f615c0c2ec02b26d876ee0de1a53a2763c5e4972867c5cc8f426dc. 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/TCJPB2446349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae504459db32541c8ba60061fc526a62b60f557e15905ac8439c4f1dbe356194. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/TCJPC2432636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb85ca4dfdfc808a548f4a10f19d60023b1e33f855ac5196704ae6aa77890289. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/JP92A2436580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88428f136fa31eb602d1e5517d2112633ca61a4aa43cedfa2a43be568fb7f07a. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/TCJPE2588862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb2f9f89b17673f2f08ee9d48065d4539d2b5bd2d0db273263351085069525f2. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/TCJPE2588873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x276ec9ffdc53ca3e3a8882ffe8b6f0a821615abe9264c0c5c2f3b19522f6af4e. 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/TCJPE2589830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacbf57edf0e0529b43af33dae02897c308caa954d0935d71d429e4d3175cb839. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/TCJPE2589685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c0c9c3e8811b9198d897c19f60cab308c1a04c0e9e0ae4aca91983bd8f1b93a. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/TCJPE2589846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50eca211ec327142bfc786aaebd989a967186dc071eb2844da53b46fb974e99b. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/TCJPE2589185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2acb72f6f2f404bf0af757dd5d64c9188609bd5a135bd8564ceb2e1f48d5fe0c. 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/TCJPE2589466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x772359d840e4460056378aa8bff2031c2231d262fc60755a360ee7d94ad9f114. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:41:25Z), 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/TCJPE2589888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc74ddd240e6b7e4d027559685cc47f864ace9ecfb0dda9fcfafbd76f61164b6. 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/TCJPG2570644.