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 0xed3d6b8a376d8629605061a18db49ccb543006219fb7e5bcaab5ab9b5ed84b09. 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/612c624c-6e07-485d-8fde-4b663b4afd6e.json and https://artists.proofprofile.net/proofs/artist/612c624c-6e07-485d-8fde-4b663b4afd6e.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 0xde9e2405190c75123aa60f52469266da55a44afd893c3203720506156db6617e. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/TCAJR2577436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b96589ec55d1252433492429e6ff1dca394449d0efe349355bc7ea57fe05555. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:49:26Z), 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/TCAJS2577443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aa690d422d5cc9194cdd7c58043d20ac307f04eba5ccfa4df1536ee70ff576e. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/TCAJR2577447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40e72fe86940756e27e2ebd6ff1a4236520fbdcc89222a4860b087cb763e0218. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/TCAJR2577450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ea2703dbc22d74c164f12cbf1aca85f6c4729c24c99772e9d3100e6214964f4. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/TCAJR2577453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab6f1703bc44c969265cf769a64cfaee95d43adc86c98f2b88315aa74552b81f. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/TCAJR2577459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66a6d9da283787af23b79fd1ea30cef07f0fadb10991027fbc184514e0d5ebdb. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/TCAJS2577472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x118899a39ea2c7b6467952b6b7f646577c242ed538c11b2efdadec3c2fcd347c. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:38:44Z), 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/TCAJR2577476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77a6b36cc7d55e2415035ba9c4586c182dda09e688c6e8beb37f1bc9f1b8ae82. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/TCAJS2577479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3c0edf30fdc704aad8ddec0fedd02537e88ba47826ef9e25d8dbd1e73e17f82. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/TCAJR2577487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29f69897f9d8397a095934a67e13330cd26390bb5ee268db21e785f3ebb3618b. 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/TCAJS2577493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e104e35078caafdc0a3ad1f094a27e9281d341e91dcf465e7d377709f8ad6f1. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/TCAJR2577499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32d81b7cba5f7bd0d54273a3e5a63450bc340e4838b9112e2f53c006fe87821a. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/TCAJS2577505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a76059acdf8fc90036fa33380ca9466d6b8a2b0cacbd4f885454451e2e56c25. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/TCAJS2577512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08bea56febcd98f5f946e2203f8dd793f1a99a22b2c93cd3882fbb9827742cbd. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/TCAJR2577517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe606f5d19bfe41582bbd3824fbfcfdefbc0d1d6b5ab78d1b478ef56fd1ffd636. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/TCAJS2591057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77e2f01d68354badf80b9325376b73e26c2c19b025d57c2a62f513c94623ba9a. 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/TCAJS2591060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26ced91222d4356a770ab4fbad471e639e6f7b517b64d72481b84f47dc0b541d. 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/TCAJS2591068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5938d6019b1820f9539229c2ae0529a8515feed8e8580b9a5e4b7bb83558a31. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/TCAJS2591075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4cd695310cae80cc3b8093d8a1473cab619a4d0dd16f7a74cb4aa777c4f03c9. 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/TCAJT2591078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8b0fd7aeaf050bb88b82987faee9c52cde32c46622717127b72d1ab03083a57. 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/TCAJT2591080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a96c3381eacd64f7a044ecdd2b9c1b76945984fc9810c9b55886d0295dbe25. 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/TCAJS2591081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc95ac7fcdf367babf18bfde183a606b66f3ebd13bcfda830bd2a305a7207c90. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/TCAJS2591083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf82db87b729cc04b33c308fcf0a61789f46ac5cd8ccda997d34751586d7b957. 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/TCAJS2591089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbca0ea0588789f65872f024e8d9d348223308c07d2b8d3180fc9b686c17cd989. 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/TCAJS2591094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8592a8f5bff3baa8068eaecb880024e842cc44376a9e38756a712d8b82bffa8b. 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/TCAJS2591099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5d52c273ee659c1fa513c184745e8d7e664e00c36c2dda1e3b651c1290c08ec. 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/TCAJT2591102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8118785fa087486d26ab82a6e6a7c6b3d480e75aba47fb2b403898f152a2a26c. 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/TCAJS2591108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38c153aa98f3b4e6ae1fc0aec04b25ae045b3251f578b27550ebc9536095382c. 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/TCAJT2591112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe60be6b316d2e32b7764827092571765276847f6467c963590a1df0e590e8254. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/TCAJT2591116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb16909da444e7b6e665f2e802518250ab86d087e3b1165bb8b3a6ac7ba0dfe0f. 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/TCAJS2591121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ee18abbed4edf8ff5c046d8fe5c493892bcf056a6b9db4afe619a763f98819a. 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/TCAJS2591130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d4d86d24639f620d74040864470c091741c3f31f5b521b3a80076f782e9266c. 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/TCAJT2591137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfff6da79fd2ed5b85bbcbdeed2b413cf882dda40a3e21095c36a13207dc3e04. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/TCAJS2591141.