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 0x042a79a08934bfdffb1806fd31cadeb2d92d0fef89a71334fcd74b818f26d961. 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/a827610c-b538-4962-a953-2b5861b77b1e.json and https://artists.proofprofile.net/proofs/artist/a827610c-b538-4962-a953-2b5861b77b1e.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 0xfb4fb14403f8a993ffaccd9ec6948df8fb879dc591b3f13c198883067b5d2b45. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:05:17Z), 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/TCAIP2480723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba0c88f7dba6d5f32f83cf6e2c5dd6bee347135c23d7ef75a8921e2d65414d9c. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/TCAIQ2480726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3b695fee455781a5f62e330863a501d1d057b67dfcba4aae5452bb4509baebb. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:53:34Z), 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/TCAIQ2480729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc95eea8834f319de2daa85dec7937c43822e6752ea15b0096e5dba248b3f36d. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/TCAIQ2480732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9e0d9348e8b3d6bdb12648191cf8b4a8efe57518f6b167794902b250c8ffe7f. 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/TCAIP2480736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec5b8345b95f561bfd8729f94fdc0645d9d5f86baa81618bfb5978e5a4a0f47a. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/TCAIP2480738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb29ceb8b114804896da66f449990a3dc8d951a0b94309d0d68a4e6479910fed7. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T19:04:12Z), 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/TCAIP2480740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x300caa54abd3aa3c1c838d57ed8bf86e6e25d3dd92fd8dda6a8f70d618ca10f7. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:09:14Z), 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/TCAIQ2480743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30c083481aad88e1482041149769262abaf5f6323f7426f6e0c3f1ef74de011c. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:34:58Z), 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/TCAIQ2480745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb03652d08303d3bec359e927af5328293f9c470bbbbaceea681dbbe9648bb579. 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/TCAIP2480746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45cdb8e93dce82df0f47ad8b8393a4d628546f0a0abe3bc67881630fc6baa9b4. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:57:56Z), 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/TCAJI2537943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x589af4da634d25a24358f462de06df5f38dfe6b047918f95189f3b35e605461b. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/TCAJJ2537953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7045700c00be7968060d7491f311e70d496c8ebd482b39b9c4553277f51e2fa1. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/TCAJI2537955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bf13a21daba2f8744f7bd13c9cdc64ed547bb8a77083c29b21e14af8850d55a. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCAJI2537963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x823782e7b96f75bbe6c522a35399cb7827f8371bc0c1dd7461a2e9b9f4a0c853. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:26:43Z), 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/TCAJI2537967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefa152836f1ac91be932728afeba8aace23cc0fe04beffc8bd3abb616f932ac3. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/TCAJI2537971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcd3fde45968919fa8ec5c4cc8f5e50faff3cb5f7d7123db7566129f644fea72. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/TCAJI2537975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3b1a60cbfcec9d9784e5451e921c61a4a5c59ee1527952fcf8e8477a1403c5b. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCAJI2537982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc76a65f6942a3324aaed813ec045701f1f6db4b76cb9f5514e20d81228cb9381. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:39:48Z), 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/TCAJI2537985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c7e5ad2f639f02880fa318a8a7caf1e11e11e7962d2705773fc57d418953f40. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCAJI2537990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e06957d65cf8b9fa94f42adfb54bdbf62583365fe445770aaf7e9f9c4256d86. 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/TCAJI2537993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf39269a0493dfb5be2156a063135c2fc7b22e9d2fcb9333ff63fdac7aa72d54a. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCAJI2537999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4ae7c4dd21503799768a1130d9f056206b29448f3f51e69ca4d1f88934c8b76. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCAJI2538004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76e77fba327beea24316d577a68ab9ee89e3a223a036fde0629b6aa3586f5786. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:04:36Z), 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/TCAJI2538006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd86d31accd5ad3f1f21c48a083a655e595767f19c1f95291679091894beab0ab. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCAJI2538012.