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 0xec42ae03336a15dd8c49838fd2ad8acb20bcb7bc9a35f8b984eb2c656ed5b842. 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/020b6ab6-eba5-4c63-9b82-ee341991b877.json and https://artists.proofprofile.net/proofs/artist/020b6ab6-eba5-4c63-9b82-ee341991b877.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 0xd177fd5b28bc739c1dee64a1925941889f3d4a09fb3f79e8c247f971b2c7f08b. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:12:27Z), 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/KRA341633693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94992ec16b5fef1f53e421937cc6c1a147ab728427247b359c841ea3ef980352. 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/KRA341633694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5e2cd9b02f8bf9b193edef3ab24145c4c3a6deec229966397dfb0083124e5e4. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/KRA341633695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6fe98584aab936770f50347ca38766839b34674059f3f7f17bacc0a3d7f34ce. 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/KRA341633697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5b46f0020187ba35e6d52f238ec680683f261196b032f087313d7dfe32f4207. 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/KRA341633699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9c5b7b3ea453b30c0b0f626471ec6bab8b4253edb9a2330d75e3c437889ae85. 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/KRA341633685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x094503952981059ac2a577517ded2f2f051c01e4fe21be55c8dc2fca5892596b. 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/KRA341633686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb068967e8b48f2c0c0b2d6bf60c8a7ab239c88c01618fd120059b819bcf18fd9. 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/KRA341633687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa71e03d950757afa8124803a3c61853671d6e4f98a46d81393d40a508fcc2cb0. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:50:57Z), 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/KRA341633689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3771ac0fa2b70a5436e3ad662db86eb1316b83b6a4f7e29cfcb313931a1c4de. 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/KRA341633691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x141e1aa9a5f9838401338950b9bc94b833bc55a76a6ca882a05be8a1c9221753. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/KRA341634125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbec1624a53718bdb589f0aa674ae31da5f155bd0bc5e0548408febf8ed13314b. 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/KRA341634126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1b4b18b81489b4259e08e0e8e8b2a69797c6344b4ec6bfa0d681ce04d666a07. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:45:44Z), 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/KRA341634127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52a0a94ea9f7a322a566a7de69d562904f81c7aa22545d9cf48ac022d0efd9c5. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:41:06Z), 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/KRA341653962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff25f3e088da6f68df3c106f6b8ff46b5adf17214a12d65530b570d12943e63f. 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/KRA341653968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0913df37e26d74af3db58cefb17f91e7a6d7ad23869812916b336bf4f4a1c83f. 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/KRA341654094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x556822cecad6ee9bcf20b71164ba04e2ad2eacf345b2c40f466283b9bf7a3c49. 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/KRA341654100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc5b07923802809ef4102a06dbbe7584c9c93ec925f3c57c17800c36fa521d3e. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/KRA341647002.