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 0x8636cf61afc03a6243943656f05f2f5ec479ef6a32bc3f1d1df2391440d4bfd0. 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/ab3eb9bd-a7d8-45c1-908b-ad5e2594ead2.json and https://artists.proofprofile.net/proofs/artist/ab3eb9bd-a7d8-45c1-908b-ad5e2594ead2.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 0xf50b97f8a451d8c1e3b67afdee24cf04a7ceed5dc136446fb395e7aa51fb69c4. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/TR0391800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d232f7060569a6f27f76cb25c38f9533ad0425df78f398db700ff7d4b4eee3a. Chain 2 (Bitcoin): anchored in block 959355 (2026-07-24T03:24:16Z), 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/TR0391700304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98a1044635b92fd8d1e7f0517690b3bc2e51e7d9cf240616b76b6f133ed1f1a1. 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/TR0391700292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x904637c79ded3968fef7275ca881bf92ced31cf4cb805abf5e17f7cc6fc8661c. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/TR0391700294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceaa9736cddfa8cfcc8e9a1a66f74ff92903eab93102305afef0c9d3ad0a6967. 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/TR0391700300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac067b8523901ff5fdbe51575cdedf52c9f016dd3575eda2106dc62c8cbe72d5. 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/TR0391700297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x721171f1ed14e164b44a9f508f6c30c268001d0f0590b8dabbf305126ce87507. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/TR0391700293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x880871390d446592cf6f725d40befb8eafdf67fbf941cdd4528cfc90bb89c65b. 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/TR0391700301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf50b97f8a451d8c1e3b67afdee24cf04a7ceed5dc136446fb395e7aa51fb69c4. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/TR0391800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d232f7060569a6f27f76cb25c38f9533ad0425df78f398db700ff7d4b4eee3a. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/TR0391700304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98a1044635b92fd8d1e7f0517690b3bc2e51e7d9cf240616b76b6f133ed1f1a1. 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/TR0391700292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x904637c79ded3968fef7275ca881bf92ced31cf4cb805abf5e17f7cc6fc8661c. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/TR0391700294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92016f79807503ba1af7083b0cd747fc99d3777fb2b933d29efadb2ac344fd43. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/TR0391700305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceaa9736cddfa8cfcc8e9a1a66f74ff92903eab93102305afef0c9d3ad0a6967. 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/TR0391700300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac067b8523901ff5fdbe51575cdedf52c9f016dd3575eda2106dc62c8cbe72d5. 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/TR0391700297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x721171f1ed14e164b44a9f508f6c30c268001d0f0590b8dabbf305126ce87507. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/TR0391700293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x880871390d446592cf6f725d40befb8eafdf67fbf941cdd4528cfc90bb89c65b. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/TR0391700301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6872e2981d66e4a50ec26ac4d6b5bbae3062608d4b23ef29216fbec957801fd. 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/TR0531913143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d0ebc72cc5cf7fefc980d9a25e4ac3c63ce90e1cc8cf40dbd97e1fa34063212. Chain 2 (Bitcoin): anchored in block 957550 (2026-07-11T09:54:43Z), 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/FR59R2195733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fc064c35033068b803abd49a57ef1319dc82f487b36ca14c7408f29850193bf. 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/TR0532114246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04a6741cf3dd6ed1fd5475755b9d6e1e8566953c3eb13db12c4355e00c3fd424. Chain 2 (Bitcoin): anchored in block 957552 (2026-07-11T10:04:42Z), 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/FR2X42281594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20e02b97a04ec89da755dbc4f37865985e1b1b1fc06859d6cd6bc314dd4686b9. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/FR59R2269825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e91c092dc5bdeaa263837365dc6a9686e1849724b22e629c74d0755168bb1c0. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/FRX872291347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94a3e83b29ba5dd2bee87c202b347f23617b57030683ab36f2cf7542aad02ed6. 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/DGA072254900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc599437c5a792a941904e55943f55f34678135d181a37ea40ebe56176ff44b5. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/DGA072254901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa24e4305c77f27dc6d383344b72cd18297a6d01c04bab5506b5a90154f853c6. 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/DGA072254902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83a676d93943a37b5d7ebd2cc8a9cde9be86f0a9b554927b2d5cd793482737e7. 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/DGA082203943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d72d37fc607990547d1e2156d018db1ac686059f7636b3507319386d0f4fd9e. 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/DGA082203945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fa044b84626ef8cd009f3cd9d190a053b4aef3fe690d15c1104e5f09a5f3215. Chain 2 (Bitcoin): anchored in block 957551 (2026-07-11T10:03:47Z), 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/DGA082239098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x324e67233a2e543987ff52dc3c7f5128e267fb716a9d16e89f92c7c21661fd48. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/FRX282340460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x614b41293bab2d1bee504127ba8208cad3649091d752ccf1982e98544e11a5d4. 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/DGA062334062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a6c8d3d011db9e5d473c4653332b6d22d764d20968e8b4e72546a071af37598. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/FRX202463926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85f9ba399836914fdf11ff3b41f4a0f40536f389777356d70dd7916edca36978. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/TR6232400666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x821ada9ab51f6846b88fce3bd351a145c88619f31d7cd36c1f425eb8277fe021. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/FR2X42555079.
Hastane Önünde İncir Ağacı - Doğa İçin Çal 13
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67f4ffced9105d19001985c3f6bc65e1e0d540b0000db59e88248abe5b9d929b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USDY42374663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x469a7546df6f6a48683d3f90a99156d7c89708f63ac5ff80e81642e868761868. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/TR0432104335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf790d1fd7c618a8017439973cd8849ed795cb638f04b1906fb01fcb4cefa2ffe. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TR0391800185.