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 0xde912eda9b097a5109e72bfe559a0a5ccaafc968db1d196bed158b480e442f11. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8d35cc53-8534-4761-8ee3-0b7cf513ade7.json and https://artists.proofprofile.net/proofs/artist/8d35cc53-8534-4761-8ee3-0b7cf513ade7.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 0xe065b54d9ae7e8b78475e5df5d56f2dc45e2216389c69370b5a1a51b7b4a1853. 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/TCAEU2022259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54d5cfa6ce67d45d743e87b90a6905f29fd1db8449dfe0c6580e860a3b9c1bba. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:03:56Z), 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/TCAEU2022159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dec60c090d9eafd2e213c4b21292a2ea5212541180834d097bbba5e010eee82. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T03:56:47Z), 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/TCAEU2022163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x744762f3375117a890fcff7597a311d474d153b33599b90bb72854943c2f9637. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/TCAEU2022166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9a21f9af76db59b08074bd4c837fae4f130b1253f663eb07c71ef53dcf4dd43. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TCAEU2022149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e2bc575bc000b5829158e8d3d4fa69a8bfbfcc5f4ca896778a926e9ac755afa. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/TCAES2034623.
Majik (Marjinal Akustik) - Free Spirit of All Nation
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5a7a9aef9c32d500328b9bc05acf7ffd335e2bf68645133f4324e478207f7f8. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:30:12Z), 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/TCAGE2206379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8d846a777e46e9727239bb833fdb99ab323c9303ee39032549d4e2f3a1a8e16. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/TCAGE2206427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53cdc5cec24101ce4acf4bce258d2d778e6101d767a281327ee7736d2c54ee70. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/TCAGE2206439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68f75768e2c21b2ee6a0b6e27904b2e1299f2c9b026f1914742a052ef1080e0a. 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/TCAGE2206460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21fc214eee307e19cb12158d37c6f832cd1f7670f67f73cb65436111c0e7399f. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/TCAGE2206488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec3af1cbb3d57666228f16fb036670f054d3be4d60d6442da834a4fe9f68fdc5. 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/TCAGE2206655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x207ed62925f42b04140038b396f9a2c76bbac700d7365818ec000ca317ee9b8a. 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/TCAGE2206659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d35e303bae09deb032334c35e82fdbf0a44ddfbb0e97eadb7dea38f843f5f52. 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/TCAGE2206663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc034b203b8a3bd02d19c5e8023ea9e29bec29ab6044a971eac092b7845353a4. 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/TCAGE2206671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d18fb833a8433366a5021406db1441176b781dea4d4fb25e4979b34c84e9c3c. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/TCAHH2378647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb2f91d289ea292a0347baaaff4f935a1bb2810ae7fbd61058f0f0f97a21f891. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T11:20:21Z), 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/TCAHH2378740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb144f0b66c9c2a0530a4d513417f0111143f540375dfb2c75ac6bec89bd3bc63. 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/TCAHH2378749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x422fa88991003a78f3ec92c14577c1bce9b6c90a48ba07b672f13e3f2961550a. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/DGA092397861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9117f24d3e49f3428d1b41415840841ebfaf70d576843fec59f51b87509d269. 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/TCAJH2521956.