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 0x48cad3885af02d643469abe4d4711975247b128a518746d250e8a3ec3bdb9f29. 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/aee0e19a-c431-4dd2-8d9a-e4fb28908e0b.json and https://artists.proofprofile.net/proofs/artist/aee0e19a-c431-4dd2-8d9a-e4fb28908e0b.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 0x117eeda446406631c87e7395547b6798eef0d0159cca9b603dc68165e82e4817. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/NLC242100160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80587b67ec5f3502542a533b32e52baff925e7f92ee1086db6836b4773f72f6a. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/NLC242100121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x117eeda446406631c87e7395547b6798eef0d0159cca9b603dc68165e82e4817. 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/NLC242100160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ace4ef9254fbf4fae4f4592b7acd424e0195de9a08c0eb28d5f720c74053801. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:55:37Z), 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/BE9JT2000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7352669c8af380f67751b08c7c61c1892c8dc5ec37077da38aafa2692c07aa2. 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/BE9JT2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x143585eb92adac63fbaa1a0dfd45fdf54d0d5bb9af53aeeeb900b69e8878c02f. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:10:44Z), 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/NLC242100159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdc472486cfbdd62ad0287ce284eccf6d4a86fd30ca17b5258f28bc05e5cebde. 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/NLC242100307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb81d85b45bfd10668fa20f67008757d1faee6f0a0c080dca3ffa8702bcf3988e. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/NLC242100417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe01c1b6a8869057d8b03802c0b6784be0b44dabc575a769dd9477b66fc471217. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/NLC242100431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3317bfb20398596f63900530adb926bba510c20e1cbc1a15f8160fa2323b858a. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/NLC242100432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6ce5f450dc29575acb87a3323e48dd6d9662b9de64da8c8f4790fda9e587dc1. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/NLC242100437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe789fa22f688c980f05fe9b7ead12b7e4e9f834cb92984af6d2f987b15a6c4c5. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/NLC242100439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d617faaa6bdce9914da2af74a4adae6e42452e7ea95df0985b1ba06ed66eb6d. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/NLC242100723.
Under Your Influence (uit Liefde Voor Muziek)
Leaving this town (uit Liefde Voor Muziek)
Under Your Influence - uit Liefde Voor Muziek
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57faacebd781ca0a282bc415e37c194b6e693725568409c5be14873729390b87. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:07:53Z), 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/BEG332500047.
I Wanna Be A Guy (uit Liefde Voor Muziek)
Leaving this town - uit Liefde Voor Muziek
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e9c778dda7b1811ab6597253ca3ce1fbcd6d15b4f1dd005838688971a9eb1b6. 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/BEG332500045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86688ffaf31ea24d7458023860e401927ded34eab749a392c73a986519d1b2e1. 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/BEG332500046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57faacebd781ca0a282bc415e37c194b6e693725568409c5be14873729390b87. 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/BEG332500047.
I Wanna Be A Guy - uit Liefde Voor Muziek
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf82641bcefc145097a1f88ae13700d97cb53c80cfcfbebaf0ca720b8d39181f8. 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/BEG332500044.
Leaving This Town - uit Liefde Voor Muziek
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e9c778dda7b1811ab6597253ca3ce1fbcd6d15b4f1dd005838688971a9eb1b6. 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/BEG332500045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86688ffaf31ea24d7458023860e401927ded34eab749a392c73a986519d1b2e1. 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/BEG332500046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57faacebd781ca0a282bc415e37c194b6e693725568409c5be14873729390b87. 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/BEG332500047.
Is This The Night (uit Liefde Voor Muziek)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf82641bcefc145097a1f88ae13700d97cb53c80cfcfbebaf0ca720b8d39181f8. 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/BEG332500044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e9c778dda7b1811ab6597253ca3ce1fbcd6d15b4f1dd005838688971a9eb1b6. 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/BEG332500045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57faacebd781ca0a282bc415e37c194b6e693725568409c5be14873729390b87. 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/BEG332500047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9c0dcbd22f35771844bfb6f1e676019cdde7acfad0b042dfd5d60bf0dcf6c73. 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/BEK012400406.