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 0x3bbeb6c14dfb23f1d8ae6b47f2846ac8ec8800d343906729c6c72c5156fa6661. 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/034ea559-aed0-4538-9c57-3160d55b0621.json and https://artists.proofprofile.net/proofs/artist/034ea559-aed0-4538-9c57-3160d55b0621.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 0x031cb8b6bbda6b5647e74120a7fd06a517a53c1798740c03d6348d23ef949d15. 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/AEA141503561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fee3ebf824b785f592a2b30d96cbeb783f8b1c2c7f0b7c853d24649058bede5. 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/AEA141609082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb645323759f6164faf6fefc9b4569bb263ef04d9393ca5efb50eedf127b630e. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/AEA141704001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5969aca317dd5a0e6cf98192d8a2619be79940bdac8a7910e2c69f6a9f99bd72. 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/AEA141805374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaab6e50d77c40f3e45d2fc3af62c774aaf6dd2cf5e4a0ea071dd719ee01880c. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/AEA141805803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef3361f4d1bb5853dadf065a23a41510f2519b3275301fa0dd6138bd1b2696c7. 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/AEA141805909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x492eee79a1c27120c94bf593d3cfe070ad27329a1e42de5e604005e385144c71. 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/AEA141906178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f1f040f1b7df922d13a3caa60e9c15f12f00930a788b36e64b60ee1b893407e. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/AEA142000843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x066aa66d29c39c3164bda12350fcca53422c403b002d19cde9768412b614b27b. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/DGA052028691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70ccc61917e40c3b101c87fb11be3d6efa89ce09682cab9a82d3ded5a4fb4537. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/AEA142210856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x811603dd525ff4cab6c8558bbe46d0ebd1e0c632be1dc0b3dce9a144bd73779b. 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/AEA142300328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8c37a432736c135b39c4380160d4ae15f4b7cfc1d5b1a93c382bc746c813458. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/AEA142301209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32b3c089a8b24bdf6bae46eaef5e0da3c58535c2e7af6e0e7530abe19a056e6f. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/AEA142500535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02f2351a41d9e5e92761d9272efbab6f92ac18d0858ed47ec4b826444adf9ba9. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T06:53:01Z), 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/AEA142501013.