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 0xc37de7d8e9e94012066818ebe9a4ec75d207ece42470d73c68582c4b6fb83f65. 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/8682ea2d-9fd0-4d38-8afd-7fdfa095a171.json and https://artists.proofprofile.net/proofs/artist/8682ea2d-9fd0-4d38-8afd-7fdfa095a171.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 0x23d980602183ea0fbd494d723d9eeb7d20160a3494315413f926e434b9680ad7. 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/BXEH21600020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcba6737c883275627ab6ef4903c74366a233c3cca9756766110d0f273aa3f407. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:29:51Z), 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/BXEH21600019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34fe8463ce95426ab09aa8f21fadae8d8b30a12226d8455e408eb8f217067f8f. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/BXEH21600018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05ccfd521dc741009ac75a62753cf56a897bb956ac7c0efec93319c5963289ec. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/BX1A91900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd9e403f4d17bfc4a3a0fe277e41a6198078052fefd43573131115cf8d5e6084. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T15:20:21Z), 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/BX1A91900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a0872b464703f3f3afc4e483bd7659475182830052002b92b709efe6508e270. 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/BX1A91900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7a3a5496f72d4f513aee90fd4ee7ee2289f979dfa49ec00f13690af17fcbbbc. 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/BX1A92000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fec30b58faf12785bb2ee43b944e6acd1e7b816544a4e3681a56941fd976aa8. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/BX1A92000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6ae41a87c657aa2a33b1a1707e3128fde09637b5df9225fa8d937d7efb14e4c. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/BX1A92000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc07ffcfbc7bb9eb33c3dbea2cd6eb3a3c47220133bff444e5464a9a9300bc6fe. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/BX1A92000018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c6f3d169c8e223dbc448adf299b9ae17ab7655c515610fbcba8ed5709db45f8. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/BX1A92100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68069e0c6c788b9ac0cded5069bdd6f111db187a7527bfd004fe3b95749a133b. 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/BX1A92100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa064cac3cdc80349b400d7b1329a3812ef7aad8a1d17a79d855658d67a098d70. 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/BX1A92100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c89a76616885451d42ec9aa623de813690540ca0f44487b8cb04796109d5afb. 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/BX1A92100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf65b27034a66d8f255fd20bc68b5f5d20f9bd13794a0f94fa879da09ec20a226. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-19T23:35:18Z), 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/BX1A92100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24b6f5a36ebc6f8f23967d55971b7e5154c638645b36960a8a48bcc8e13aead8. 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/BX1A92200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74765f4a41c66805ab5810927066b33eecadb0f3125acb3c3a8d282b0a366786. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:33:44Z), 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/BX1A92300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x583a9b930b15cacfeb8396f0af9a5ac59a777360f828553d7280b84a403d979e. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T14:00:43Z), 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/BX1922000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdee7da8f6d7c677dca164622ba08b4ab80d5b684a4fe850318133c4b58dcb1f1. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/BX1A92300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b7998383e80ba1ca18e646de651c61ae5225b37cf12c18a05479311ef4bc7ee. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/BX1A92300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74765f4a41c66805ab5810927066b33eecadb0f3125acb3c3a8d282b0a366786. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/BX1A92300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x486f87c473339e0d61bda604478f1a89dc3b19da541517894c48ce318cb50578. 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/BX1A92300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cf06fa8bc7debb04ee1875250dbf5d023e1b8c22c21fe933d0baa99434235bf. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/BX1A92300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa913b705bad70248f2c864da8da0ebbd320619b4af578336d1798ec75e916ea3. 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/BX1A92400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefdf52e28a1ad15cb4d2e916255837f2193e4010642852f2d11cd3d20d7ba4cf. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:03:49Z), 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/BX1A92400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa913b705bad70248f2c864da8da0ebbd320619b4af578336d1798ec75e916ea3. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/BX1A92400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe64421877ef2d517ac23d33dfac593b45af8f863f458c531669bad9add34915a. 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/BX1A92500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaceb0139ed6bd5595f08b4518d42a3816cee4c83cc393344d459ded17652f2b5. 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/BX1A92500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x493e8e5447de9d3c372ee14f91890a843067a3b7ed732588adc91ea6d46f7595. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/BX1A92500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefdf52e28a1ad15cb4d2e916255837f2193e4010642852f2d11cd3d20d7ba4cf. 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/BX1A92400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f8e92996ce31faa9c618fcf3860fe05780222af46e1dd0304b4e550db2bd09e. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/BX1A92500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x363973471516297412d607609b144b0a46131a6f8f41ad1ededc9b572264760a. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/BX1A92500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd180605de5418504676f21a5f6858e1c98dcf5f0074c229c91dadf4f11820606. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:03:45Z), 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/BX1A92500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6244d2438bf07e60b9e82ceb34822bdfb693df0ebe8f5616741ba388effa4e20. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/BX1A92400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7194de0835a958f396af16be9c8b79be8d6a21e2cd01cb35d9fd38fadf8010b4. 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/BCEUW2100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7194de0835a958f396af16be9c8b79be8d6a21e2cd01cb35d9fd38fadf8010b4. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/BCEUW2100008.