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 0x6954d418a862b22fb265703ae27c3425f00e24c279728f7230245c777e86f2e3. 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/dc1ec10c-1686-4b79-bc8c-113770fddd6d.json and https://artists.proofprofile.net/proofs/artist/dc1ec10c-1686-4b79-bc8c-113770fddd6d.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 0xed9a53b95561f0509f485687ae050a7d8db9baf29852f2ed71c0d83c63bc640a. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/JPD951300807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15aebb3a007692361fbaf5ba6b52ecbc51828362452e83411852a980da22dcc6. 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/JPD951300808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0f7b1654819eaafc7f78514d4a9b4535f973827f10a298dc624a44f329792d8. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/JPD951300812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe882b47e545f4225da893a062c3afeaf7dd8407dc6ddb65ccbd0f69985ecb9d4. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/JPD951400835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9482e3b141b0de88509a9053cde78b345d1353ec49d3ef0bf2c7fa295e9c7dc. 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/JPD951400836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cce80e5c7914d075e5a46942776e8704970488cbe065560876720cc910585b2. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/JPD951400837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5b1cf3e546695e0480c94d2327668bf3781c634eaf90d1f658fbc4e1e0a1e27. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/JPD951400838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c7986fbcabb4b467f84a80661d855babeefb9bf2a636591c62b51637fff2cb3. 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/JPD951400839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eb302117a2e63e44a9ede81be700adfd26a3b352cf6a7bd3e9b620bd8dcc100. 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/JPD951600897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcedc39b9b68c6f9a46c26181fc0ecc68f69f3ea665000be7beef6c7534970953. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/JPD951600898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bf501baca71aecf6bc6f6174b182c660a70adca089d363e6c179ee515535cab. 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/JPD951600899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0313d342bd6533789962685f83203c71cf1b9970ed6e1d5ee182ddb4a9dc39a. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/JPD951600900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a5121088aa1fce01ff9f6eb5f76080eca15cbd3882827ebd71a4385f51223aa. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/JPD951600909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2da19ef2b9351954e361b64d0b8715d616730f85f64135a69850e6dff90c2192. 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/JPD951700940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0e5e5aea94143bc7ac9bf5652872bfd44be76dc3523c0bdf0483fc1389e728b. 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/JPR751700221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf247821853b365a805a21d7040451f01a6bc70a7d35aa50039a690b282b6354. 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/JPD951700938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e1b5335988bcc0f574e113af0c04b2436d8ad6383116fadd6022efafdfa83a6. 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/JPR751700227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68f18a7bec17a3efb4931d76c6d5ab7c97f137514cd39f78f7f2b5f7981986b9. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/JPR751800364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa19d19b50be2ea6f0370e7335244f8b35b1c77a46f71cbccd530bacb2fb493d5. 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/JPD951900984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa74213a92b0afa73dd4d378704bc57237bd257c1fde224202b91b0d5340c1a1d. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/JPD951900985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca7c832121c5b35f3173f33c4e68b8930db73355bd818f0466a41035081e8842. 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/JPD951900986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c7422ef9aac28d31a42a49690e0815a5c3baec07f984d09613ac1d21bc191c2. 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/JPD951900987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1883ff84c9b6df0ed5ed4d0f10eb2b63c3a73b52d02f8570a47e609326d37c22. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/JPCO02105270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a77bb2159e88a9d8490006751151250569f8a6b51f28472d62774194a26141f. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/JPCO02113290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3db7921770bd7c71562bd279b947e53734433609e3aa376e963134fdbb7ed8c2. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/JPCO02113190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaf3c6789b1bcf479c50faf9791f5f481d784f84fa5908dc803dab9dc480fae2. 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/JPCO02113210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bbd372fb290f55c3f2b3f990bb78464a5b9310fea1d77b6e8a5554fb5f44999. 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/JPCO02113220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4d1173588ac390c8eecc1544de2da81d89b3f61c55466c0be8bf04892df8d38. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/JPCO02113240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39e171e16c8361a79062ff4c9631acf9968acf7e2eca45c95d371db8649f13e9. 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/JPCO02113250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda22823c450eabdf4ed30f8e8a110e0cce299b018786fa4adde61d90d3d0c2a2. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/JPCO02113260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfd7ade3ffebb186fce9605ca538b99300b4d43b42797ef5cd7dbda85bf6e4a8. 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/JPCO02113270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4a5beabc6d464ccc36be359f08556ae3b26c4d5aacdf7d1e1a3e4a69ac7b9a9. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/JPCO02113280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2d17c24c73d1751685d181fda2b98c63fca7a68cbcd8449daf8648b69cfbc54. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/JPCO02216520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb370c9bcc9edca6ccc4537a11fe2ee9a399df304fc3839c15319d464bf6c6521. 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/JPCO02302530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc95d25c887629ff165bf390a1fa0c616c7d1cf6c3951ed42d3973b57b0eed33c. 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/JPCO02308230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82cb96de12b354ed10a16b39f033a564115947f586f40ef557e03927f03202ec. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/JPCO02308260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04672ba7902ea545421d468edc49505b0b2767b528fd7f35b42ee1c0fc0aa240. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/JPCO02308270.
Timeless Melodies - a tribute to dustbox -
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x161a9cf4cde98d8195e9f2ee340336e0d0eb500a0970ef913aa4e037aab6d680. 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/JPK402401191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34b577a06ed4db5e6038902e414ecf83f9a564b00d1c16979502a16f28d61dea. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/JPH202000096.