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 0x151c4017c7d5120244f288d5800f7eae5f3fd16894d4af8387a2892244893d5d. 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/5925e2c7-3d0b-4742-810b-ce8db7ba4496.json and https://artists.proofprofile.net/proofs/artist/5925e2c7-3d0b-4742-810b-ce8db7ba4496.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 0x4a8fcfa445b21369c455333e4ce7ed633e1cedb4d34d50834b4f10763b7297e9. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/SGW502237151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4065690b2edf37aa140671474c181cd4e8408d82749d7c392f00d48260c2c55. 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/SGW502218590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8650e2e97956ec3617fd52f805a26431de306e3a1adb3521db52bc4a1ff7aff3. 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/SGW502237786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4068f76f17afd2c7ae579978a0d7dc64b184f5b4d54fbd4233c06b504dd336cd. 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/SGW502218585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3143bbcf14637845cc40fbbf1ea60835829ddc92f2ee9c13ddaf561e46998ec7. 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/SGW502255458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x743f2f34fa2e2a6f2b837823e7eb860137c1fdff58ce1ffe86d0fbed588c1eb0. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:18:23Z), 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/SGB502555589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaca85db5bf0ffa5433923726189d238ceea7266ea3761c206ebc43be4b83ab71. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/SGB502550908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71296c62974d42bc6903731879e6a79de988851a9806624b46e326bd36250f8a. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:35:45Z), 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/SGB502533085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7fe85bb3076cd93e9f161dd3ef84b6574d49cd10a703c564be2ac47caf155ca. 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/SGB502593217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce816d683d59d7514d42b780aff4499fb410f75c61ec6b830ad8dec95f8044c0. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:20:20Z), 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/SGB502553738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1afafff0df99b75a882da1d63b351c45eac42dac4032eb09ea926eadd909f59. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T06:40:46Z), 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/SGB502551024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38ad00febd73de4a5a90fdf35cd3cb67bdc6eaa0578d8576e832b26a2a1592f3. 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/SGB502545029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5155c6eeefa8e43664710871a7f6f9b469a58b982621cd582b3cea0ff6afdeb7. 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/SGB502546989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4819905d7c44b1b9aa4ca25b48574522345f12a1c2f11f363aeccef528ea323b. 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/SGB502571629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x132bdf83e728e427a1e019b13e846a80a0305f4de2434cf4074bbd17b85b66b7. 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/GXBAV2526324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda7e89807d4161fd55c4b1b4ddcb7e903ad53c9cba0086d8f8357cc15b81a97e. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/GXD7V2588109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69b5b1e4a348dccf730c8a880377d92e9540c52c17be1b415754f2ca370ba17d. 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/GXD7V2590133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0af321a1a63676706d8be57d7ceafe0f782adef12a147760d4cff15325c02851. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/GXBAV2520040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52b6dd706745d9cf754cf2b9abef0654d1c07c2b4efc4830cb33ededf68a8a82. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/SGW502594611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb350021852b025a2adc94f761df8f88ea95f016c0c3959acc23e41ce9c3489d0. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T04:59:22Z), 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/SGW502589415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd878c884917a0abc119f9d106fb0a8bc3b9ed893585a982291e2b36e1491177c. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/AEA3A2586670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8605a4aa088bb07a72fd6448b490333836adc21caa0ba7bda6f8b0037cb6d119. 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/GXBAV2191000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d9032a4a5c6845a76dc8c6512fc44de630330bbc25d18b30cf37fa82bad326a. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/GXBAV2117103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb560ceaa93b12e72e6171208ce30f38b90fbe8b86f4d16ae32cba2ecadd5fe9. 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/GXBAV2161221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85ea16f2c316bc0540296e61fac687474bb7a7a21f6a06ce0e92bb63ad6e0def. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QT5M32553898.