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 0xd8a3ec8352b26538488304d6ca33b24c4d4b11ae308455fbe45ebf1926637210. Chain 2 (Bitcoin): anchored in block 953899 (2026-06-16T06:37:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1285d904-39f0-435c-8b09-d5e6e32f4edb.json and https://artists.proofprofile.net/proofs/artist/1285d904-39f0-435c-8b09-d5e6e32f4edb.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 0xb052bce5fc3db35102aa0afe9f366461dd236ba3136858be4d12f6559ea869c0. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/GX89G2524224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x626c9fe65d089f3b46b87f1e8ddbbf8d1b5269269d05106c449705e67b2ba35a. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:01:02Z), 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/GX8LE2502986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcafd636194b7226ecb60255ee3d9f6ea68a7dcbc7c3cbdbfb6797447d803c802. 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/GX8LE2545510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8a3751221cebb7a96dc474660bb45064f4bd090bd4e3baf4c627170c9cd97be. 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/GX8LE2510780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4552e93d306e6d05ead336b8c1048b1c56116140da21dfef014b8cc9881d930. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/GX8LE2508154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca0207eb99b4f0eba54717b951d1fb3a51587ea18296a40a85235cdd5c3776e2. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:07:46Z), 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/GX8LE2510766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3ee7f6988d9cb31692efbabc434d7e1b0fbd5cbef35cf0819d2c852435db89f. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GX8LE2576602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7e19e176d6d34dcd94e8ea8d8e7c2fb1761c8f2158bdb38e593ef5ada235268. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:04:27Z), 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/GX8LE2592151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0453c20327f3f77066402ba9897585eff8fd3de5087fe58b6794c86d4577420. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T10:46:30Z), 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/GX8LE2519176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1af4e9dfcd89ac2d5fd88b62b59ae4f2d39f79093e0650af8ce1a6d0a6649ee. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:41:02Z), 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/GX8LE2537345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b05fc845c80b042c437389d5cd5562d5e3c8d02401e2720c23228ffd8a25678. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GX8LE2514290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf63da44ae14bf63b7119e44fd91cd7dd6475149e296ef89ee6c3926816192a5b. 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/GX38U2584120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd6c0a6135f0832114eec8522d4306d8c6b40eb311f209039ae5d47e7fbd985d. 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/GX38U2549763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30514efa3029f386798262787c18b6eff63bc08dc0248d5d870184d7e857b72b. 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/GX38U2571756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb07510e875465e4f059c8fd6e8726ceb038a01e1a95b9213548e9193572e6bf3. 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/GX38U2508240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd564ec88bff453fc0f0ac4902b4c1c414908a4388ede396d9bf5d8a163c9c6f5. 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/GX38U2530302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cdf53159c2950a0065fa0641099681bacc1b7068af2af65000e2c29d8494f48. 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/GX38U2553626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdece243539b39977886077176596c0592dbded4e6b6020bda9ad646a80b1a666. 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/GX38U2593225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57632b7f97df1553b78be0366adde428648b7516f6d98b7a8844d14043621de9. 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/GX38U2583010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55dd7664bcb638092f89f0f952d2d55b30bf802ff8e0d290ba438f6c6ff71e6e. 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/GX38U2572588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a4587be48f1ce8d493777360050c00caf3fe0c590b8e0db00c48b9bf3c3b728. 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/GX38U2569641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a5f7823f17820e5084a2667a1a439b5373760875a4ecf257922ed7fe954ae42. 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/GX38U2508404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bd6546b6a593411eb36f4e203ee5cb7c1639bad6f56693b7a82f7c99ec28a59. 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/GX38U2513443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbefc1739db953630b038de305d57972a899142cde6bbbd3b4967246f67272221. 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/GX38U2541183.