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 0xbd170782d2e2fa9c87ab348f3d753b8e883f88af167f075d0666fcdd0befa99d. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e82a0907-c76d-46b8-bbb5-df5268fb00c8.json and https://artists.proofprofile.net/proofs/artist/e82a0907-c76d-46b8-bbb5-df5268fb00c8.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 0x1b76ae8d370ebee29e13637cf5bd55db3155853b9c8abbdd75627fa916b9ff76. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/TCAHR2339271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe63e1910e62089f79ba1a1b5c0e94205d35c76984f4e96f02a0228c7041544a8. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:09:12Z), 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/TCAHC2359886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c8d913317517d3252485fcecfb6efe8d2f63b6078852b4fb936c5beaf104ad1. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T08:42:39Z), 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/TCAHC2359899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4773ca61877d6daff9d70b250b5e9ab558b544b626db035267f33eea1c53dfe4. 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/TCAHC2359928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a5940b13d4ab694ab1757edd1931ac04ffb8d62134c58240103ed3586cbc7e8. 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/TCAHC2359991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90e1bd5dc9c09ea8e5bd644d1e301eadbd236ac5d3e4da0a0b6cfcddb0825573. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:55:43Z), 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/TCAHC2359998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbf7461ede4a14ee8e4921829d1230f62694b52829432c949dc86bd92ca6dbec. 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/TCAHC2360018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22fd33586d58ce215377a842627e9d84cf509f1f0c02b6ecc0426a5ad610e036. 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/TCAHC2360036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc94819405aa0d8966a16bd93f029e04c7482f7af4b4d67b9b068af5f2e2e455c. 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/TCAHH2371860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c6513309636dff374e8ec1743c55f441176a047a2800c07fac835669dd0547d. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T12:27:33Z), 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/TCAHH2371867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf75083d7dcc319c526743f6bc0dcfec759cc874660c2108a29f4bc510f4ac7f. 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/TCAHI2345851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf5e0e572139cfd592c806f366a0f720d302693ae19fd164750112a3d2544301. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/TCAHQ2385393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xced5db29c290d5514620f644d5ac2a175b6c507212f383aba7355117e991577a. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TCAIR2462205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd6485e8c4c9a96aea5091b88190d891753b05947423098ffbdeed9c0e3c3bdd. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:29:49Z), 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/TCAIR2462313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2d0d080cfc3663355caf54c5f01ff36d602ed2e0970da03ec18cf488e379c30. 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/TCAIZ2452803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f1b95ddb0b82a6d60568f1566825656d0f1f3ff6746b5a076b068bcaf21b36b. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TCAIY2452840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40faaca6aff2db7c983b57adaca70fdcacf7e345cd5fc50786aceb6a58e04ab1. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/TCAJW2591078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed9693a6f90f2ea8ad269efe0d866f2dd4f0993f3a45f1f70e1ef9fba94f47bb. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/TCAJW2591092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ad3c691975583be46d6631a50115d11580ffa5bb6c798e2a2de7bf398d20820. 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/TCAJW2591107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62f35a6efafdc4e901d07a27685892d1320e4ccad425b19f5f625178a7a14fc3. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/TCAJW2591158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd37ccc149ff79c4541bca8c9173f637becfa682b36e649dbf7d0372b0bbf1f62. 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/TCAJW2591168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x345610678a08675fdc32a91fe9b98819a0f1d6e6c68e7bd827d9b3a18c88b009. 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/TCAJW2591191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fc7f73ce6cd0cb9e6e9c1349ca9555a54a7f87b8ed5a44e3b0c23dc298e85e4. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:33:16Z), 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/TCAJW2591203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe5c74534c3c15748d0094a5f6824c7742677068cd4f13afaad90e67489b5a2d. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/TCAJW2591211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc17d37d60e1d9d26b67b4c327a7380326a2a1090ce9421fca5f2780d5cc4e674. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T09:09:53Z), 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/TCAJW2591216.