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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde0fa6238125d227faa2a10161e09f94ef2c51633dfa412e5db095c8d2d027bd. 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/70bbc706-0532-4c44-b21e-8f99e6986c36.json and https://artists.proofprofile.net/proofs/artist/70bbc706-0532-4c44-b21e-8f99e6986c36.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc30a306c1919cbf5bcdac0d01dd4677727dded9151a9d6e61415781c6b97bf9f. 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/DELJ81516323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bda3c9605c8d1e925b60ad82e0268b522fde8c38a9c0ab97dc9e0f88af377d5. 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/DELJ81765688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbcb5045c0f9b90cf0560c9b4fcac6e8f6137ceeecc213fb1be112da239501b2. 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/DELJ81765689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67603a4424e8cb8c0baa6462d2f94242dc81d5bdb89eff34734b48ce4f8460ea. 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/DELJ81765690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe16336f4c9c290fb1276de40f8518b1bbeef3b18466807cd5fd0c5e9725b7ba4. 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/DELJ81803030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a6cdd961e0bd6553f140ced82104eef3bf15f8a5ae1cb3e0e8f66c04b5ebf5f. 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/DELJ81803033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b22b0fdb99345a20c3ee6cc0616b4e0feff9ed61687bdeb873299ec44a0b025. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T16:15:11Z), 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/DELJ81803034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a6d98cdf6d7865271ac5e8f69c85970b7caeae5111a8971cf034b2882913561. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/DELJ81803035.
Dragon Ball Super Universal Survival Arc
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f8c984749f5d9b1eebf0ba446fb4bd010da305baf0d6db51b4f15eee35ba567. 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/DELJ81803036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x987e7c43099445be9ff6e455437cfb69fef6e0aaf25e5c2629464ec5af0310d0. 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/DELJ81825546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd60ca1ef822b8f9a748f4aba5ed0cc5515d3d0762f910f55903b5de67d85955a. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/DELJ81825552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9243c194361892d1f1406a6fca36c11555c437faf7a55d3d3b473ec6fe55564c. 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/DELJ81825553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f0d5f1911d3044be49d8942de0932e52e8896c3b0bd10480995c8c62532e4f7. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/DEZC62172458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfbc7976db7f39f83d99017202f1f96dcfa369224e976ea1982dfe54ccac0349. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/DEZC62187122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x984bfbb6a1fae151afab1d80c0612c64052e8f4147fd311ec7d76cc7d9d1ecb4. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/DEZC62187123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x707b2b63f6a36455e1e1bdab116c5eb9fc9cded25fc0d1d6e0518c161afc7cfa. 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/DEZC62124767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8501755cc0c90f15b38cc5b9ff7ed53d2cfae9fbdb841ffc1528663d4d05a483. 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/DEZC62130942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa141285be55d780c5779f65d1d8694416ff7cdce1d246abdd47cca268545ecfc. 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/DEZC62140472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33d199ad1d7a15c95b4d9a0c1905535be644bbc0c6730c8f2377e167780b2895. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T21:10:13Z), 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/DEZC62248500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x922cb978ef94b28e0292b6450ce139544417a95ccf46b8b69f9c054b3f0d070b. 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/DEZC62254536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88410f9dfab48ec573211219bcd3b5aaeda7fb8f786aa1e340e4fbded31e8d71. 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/DEZC62266033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c5a7f6654fb022bac1fd68a79fbc63b982860ca875b5f53053d66ca0a2337ef. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/DEZC62266034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x987280b572478a7c9e3af3d93968695a2e95c1b8e4c0348ccd1be7345ed9cd81. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/DEZC62269114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x196aedb81cd3dc4a547033a6698b7226788e4aab32fe6696f78098cc206bf729. 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/DEZC62269115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x501740ad8cbb68de65d39f736e416267d51519f11936439040904f04e82a06f8. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/DEZC62211755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacd078e866d35820555a08a0aef9516cc19304dba5ed7fed44e5451c4cb9c9ba. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T20:44:14Z), 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/DEZC62213468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19d4988800cda80d0cec38d8a07e7d6fc1d73bd15d5e791b47e8cf73ce23c05b. 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/DEZC62211938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b1bbd72c86940763d5b29eb607887025d86377ee1f6b6076cc4e0226a497c35. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/DEZC62211939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59e7a42f7a618b9bb7002e94adfcf57c3b7b7dc8799059e41c316e09e7a0aafb. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/DEZC62211940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x233f220ee51043e96fff0e3b65426c424af7caa4e6c9c8e163eab89f17e8224a. 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/DEZC62216198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5570ac805766bd01f93b708dcd3b1f2923546ed7a4750ae291da5cfc9dfe69bc. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/DEZC62319344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8573fd8539672423e6fdf19e481a440578af455e6f893582a23fc32a96ec4649. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/DEZC62347782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x568269f89588ebaa1f30791ca5b1a0771b684db94169b234b203d08e8f3077ed. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/DEZC62349921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5cbf90f81ed0da010c772a443940febca9073acb04bef6692687cb5bbb776d3. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/DEZC62353895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77c90d04529578c6b5bdd6460cfad6da566385f58b0ce6ba136a5b3652cbb3ff. Chain 2 (Bitcoin): anchored in block 957833 (2026-07-13T09:36:32Z), 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/DEZC62406119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d818ec3dcfd1f64341b142ed43dc2084b36e8b4087980772985d974ff13cdb1. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEZC62359825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa1e1317ddc71fc4d9c4a28810d5092a3afa7710518c0b63df28d01a7f21761d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEZC62437122.