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 0x5cc8a97c8829cdc909827373472dfb423dae88bdf6311d2d1bbf639f1fea627c. 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/ce155e39-0ba0-4673-95bb-1d2605f59ece.json and https://artists.proofprofile.net/proofs/artist/ce155e39-0ba0-4673-95bb-1d2605f59ece.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 0x00b1431b9c732d3dab2f567a0270cd12a5861f1d70b7fecbc99e0b0460832446. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/US7VG2445834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23bab982b9aba9d49da8a1bf14b4b17edccac7c9d5d612bff8334ebce704b959. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/US7VG2445836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5f43944ddc19d233f80a7babdb0206c9fdcd90ece7dda40a189c387069f6ff7. 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/US7VG2445837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e07a19597e2d3a6c1e0185fc8741cec7676d9c592535234c4ef44199683d725. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/US7VG2445838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04192e566ee9f74bce71bb9c064e79747a0abdd6f4fc31dda4357c326fcd2e05. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/QZNJW2456035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x962aad507c72cef4f9d38311ec77507fb47717ee7108119d2df495fb9b8a35cd. 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/QZNJW2456037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba04b188495d4a728019aad40fb714bf7900ada4471e69c7c1ddcd810725de46. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZNJW2456038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75626049b6dc660289d95b8d9e79225b5ad3165bfdce8ba145c7c3895c073958. 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/QZNJW2456039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80e5e1732e3796f34f26beefbdc935de06a83a9912b114c70d24f13a2f03089a. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:57:40Z), 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/QZNJW2456040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5c64427411dfe9f26dcf44ca447f20736eb73374189d9f4e5055829f8fe384b. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/QZNJW2456041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d3eaa42fe1441f27f40c1c8ba976165f23211feafa022011df58a0d6eb93fd2. 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/QZNJW2456042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd194d4d31612ab34f7f1f603638470cab47ea543a9faf26f5b09c249262889ac. 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/QZNJW2456036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8218c1a8884c29216cb4106f2218cbe6921da716bbd6da892be74fcf43c1b96. 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/QZNJY2446693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7772d1996bbf5fb6b586da0e72027d509e4ca1e56785264819404b08c81a2e2. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZTPX2443012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0e8bada88d0c5e77a621c83622504a0933e2d390cce83198b6dfbabf3f58907. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZTPX2497953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b5f93bb266da44abccca75836017f60fbccca28e3e1d77b7b82647e27c73875. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZTPX2497954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64674ad9663c091a55c44bdaa540213817870eb644a5a050cebbc1912609dc5e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZTPX2497955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb10d963dcc2ad96b1d30e395226fe6c3cc5d5d95615bbbbd853d68d5523b6826. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZTPX2497956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74d12cb861163608fffd14e3ad3877ba6b9afaee0d8979de78393a834037d030. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZTPX2497957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd12800c9a336ad09e4b31ea953be9867e988f3efe33f36b67a8556d85a78f390. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZW9K2442660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf65a70987e0a26943ee3292a54e03fa3fa64ef0337c8b31851684056bb5b84cc. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZNJY2447043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66be4112fc71b32c498e3e1a024da34cf1c4edb469c3665921db000943d4109a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZNJY2447044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x063f50ccf1472fe59ddcb727de88e1cad722bc946ef5050815568a02075fac3b. 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/QZNJY2447045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5852fc395ab25204678f718f094a622937c702e005c13db2e690e795eab86a94. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZNJY2447046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8218c1a8884c29216cb4106f2218cbe6921da716bbd6da892be74fcf43c1b96. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZNJY2446693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c32d884b3d2c4ca3809c2c495df1a7a175db2cd6f18981146c443e499a76324. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZW9K2442661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0e8bada88d0c5e77a621c83622504a0933e2d390cce83198b6dfbabf3f58907. 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/QZTPX2497953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b5f93bb266da44abccca75836017f60fbccca28e3e1d77b7b82647e27c73875. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZTPX2497954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64674ad9663c091a55c44bdaa540213817870eb644a5a050cebbc1912609dc5e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZTPX2497955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb10d963dcc2ad96b1d30e395226fe6c3cc5d5d95615bbbbd853d68d5523b6826. 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/QZTPX2497956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7772d1996bbf5fb6b586da0e72027d509e4ca1e56785264819404b08c81a2e2. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZTPX2443012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74d12cb861163608fffd14e3ad3877ba6b9afaee0d8979de78393a834037d030. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZTPX2497957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x879bbdcf48295d6396bbeaabc3adcc4b5bfb661e681220b545872965b3a46333. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZW9K2442662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a32fc03b1b1cb4d4a722546244ceb0fb7db9841a0758771fe1f3f0f8b3ad457. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZW9K2442663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67aba966dc2596b863a4f77d81d18179956314e9ccfd294f2cc4f2173db4625a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZW9K2442664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70807bc99d7de5201ffbf9d73a3b1f5ef591188af905772aae33ad38c2d35527. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZW9K2442665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ac0f66699e82d4cc9e23056de3ea97466e827ca725db4e768037e5ba0416476. 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/QZW9K2442666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c8a101af71bc2dff8be3dfb09e725719a9d5b897d7c86e75c4a26a942703378. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USANG2268956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c8a101af71bc2dff8be3dfb09e725719a9d5b897d7c86e75c4a26a942703378. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USANG2268956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2642986c5ee7dc15a3cd9c1a2a2b0e1bf212e432cf57e7555788be22ae0b1a6c. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USANG2425023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2642986c5ee7dc15a3cd9c1a2a2b0e1bf212e432cf57e7555788be22ae0b1a6c. 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/USANG2425023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a8d112a6ab1edb21e5d806456c7476015367671b66a6a03d844fb992d260071. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZ2J21508044.