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 0xed50913ea3969231e9fa218e5bdc5b010952753b0d2d7159014ef09a85896f6c. 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/117d4585-57af-4db1-af37-274adce74ce4.json and https://artists.proofprofile.net/proofs/artist/117d4585-57af-4db1-af37-274adce74ce4.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 0xec925e1ddb415dae6fd519d18ef7b895a6caf1fab24111fc036424f4e73fc429. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/USYB31205502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x419b32c565c934473f1d6172af588f9d491014b39f192b32976ab9122a51c98a. 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/USYB31205508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x565e381ecaacb129f4f8032333a5e89e6098e61a2d28fb960b496cc7b1d6bff5. 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/USYB31205510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81b9b44de4f0b22475d5c6dc2b00b098c0767507eb07b43a88313d0309c9d1ed. 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/USYB31205511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bb4f087bd4670365a475611b40b66609934e8f5eb0be5bb0dbf5057ab69e18f. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/USEXK1320803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf95f681444205380ba8bea619610af469eb60e8a2442e8d1b89fc50afa7e09e3. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:26:15Z), 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/USEXK1320804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86d2764114cf06da628bfe10383a57b73a4cf1579ff00be175b37e1061e6f927. 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/USEXK1320806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebe20f39e6d360bdc779dc2b12c4e7be5dc5dbf9dfb2c3a511fab9bf7afab104. 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/USEXK1320807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x410b4e1ec4387c028408970cfe08f3a6379d6d20efd4a6dbedc94b80f461a905. 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/USYB31616401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa60ac6767eb06015faa5ea4b7309fd4543646f1c99a332364fd84df6675e3513. 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/USYB31616407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x954469b1b4a848fda0b0b22594b6a9931d5ab4c836ff596d4522ce7d89408cfe. 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/USYB31818502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c8a893c2154ad8a3c1c88b3d78fe336dd828634389ab27ff9bbb40333614b13. 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/USYB31818503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7558e6148570a3ac7b7186087df025bf4170c2ce3bb26febc7b81047bfd429e1. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USYB31818504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30739b76638d29807a49400bc1065503796a8b6d52b9cf3e7f70d612c0747001. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:51:25Z), 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/USYB31818507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5cfb767e6bfbaff3b072ef96bc966bfb963289d819f27443ee1f5830474a96f. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/USYB31818509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa8f8e126febdb0b911980ee78717889352256f4b62035bb15b6771e0be03838. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/USYB32026001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02782924a906c564eb4837e0b5a79e64872309006700f2a20e587875406f412b. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/USYB32026101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x772b806034b9e98c376fb2ae9b6ed87ecb7772c9ef7c6e6d8f0ebdf20f700d69. 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/USYB32028401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e500cc1147e0417add0833a715a83e7f5d4070cc4d917b2f5191a21f5c4375b. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/USYB32027901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf564d0cbf1b0c310b35f667901cb1a78234dc621cb1905b49ae5490ec60ba94. Chain 2 (Bitcoin): anchored in block 957595 (2026-07-11T18:26:17Z), 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/USYB32437301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6be7f7678bd9d3c1a06e1ad3f337cdaeb036984d698788e14dca2dde6f26c97. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USDHM1509723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5cbd51b784e779630586ade93c27e21b14166eb714fbc8d00d3b9ca0a9eccad. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USYB32027815.