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 0x97f4035b0b499b4044b6b95dadbdaa2cff803ce2a19006acd09a21402382f719. 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/b87e095f-8dc0-49a1-b3cd-fc574a85107a.json and https://artists.proofprofile.net/proofs/artist/b87e095f-8dc0-49a1-b3cd-fc574a85107a.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 0x13b2225b4bbf066c38d4f79653d5c8aea1f56d1499d8eace8061f5e29d057579. 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/JPP301800775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd1163bb1fc86fffd52733c259388b57f1692aec98cc8c0fb0d4195de9cb80e0. 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/JPP301800776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c647d9a5deb1aa0728bb22d14c091a66d6171409ec8967c85d74921f0a21799. 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/JPP301800777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd1163bb1fc86fffd52733c259388b57f1692aec98cc8c0fb0d4195de9cb80e0. 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/JPP301800776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c647d9a5deb1aa0728bb22d14c091a66d6171409ec8967c85d74921f0a21799. 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/JPP301800777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37f670a5284aa93033bc9c6447ef8261fa2da2b82c8e8377732f0c123c8ef0ab. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/JPP301900045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11b36a7a03df7764eaca9797eed1b84c9daab11a5428817b893558480d6053e4. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/JPP301900046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37f670a5284aa93033bc9c6447ef8261fa2da2b82c8e8377732f0c123c8ef0ab. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/JPP301900045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11b36a7a03df7764eaca9797eed1b84c9daab11a5428817b893558480d6053e4. 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/JPP301900046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd57fd205f91cd92ac3f399b82dd9a7e35ae3aee8c630d4fce4cdc07ac9842097. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/JPP301900191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8969dda262005ac6ee30363d772242ddfc75508f194acfaf9a3d7e6f09e033f0. 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/JPP301900428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f173b7d282466d819c5ac48677253e5a9cdc3a518f9d9341fdaab81658af165. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/JPP301900430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6722d16f8269c5b76b48ed59bf3f7e8c962a4a9c1c2e944ed2d621bba5896af8. 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/JPP301900432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b87bd9dc11bd01a4a517f8abf8dd0e4efe1016eb636d2558c67a4dcdc0d220c. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/JPP301900434.
Imagine Siblings / Number Four or Five‬ / Trying Trying
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc589f7863109cbe53cb581027412cdbf4c64944ca522d5934d96eae78500b7ee. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T01:47:42Z), 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/JPP302000125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9e76a960cce2642830f5b2a2a41634d34794c6600ee613ce803e56a02b61a6d. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/JPP302100227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfca22dfae12d4a7fb6386053d3388b7fcfbdf7112644b644b17337b10ef11a9b. 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/JPP302100220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cf0dcb4b52a3c7adac3551ca128730a13e7c704a7690c6772cb3b27ff883b6f. 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/JPP302100222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x267cc431281b79cae3bb5b2bc62bb2a6bda012ef721c37691cce801fe0be6e3c. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/JPP302100224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1724e30c6c38fde40bd8d0b261f6b752ddc130c0fcca1903da29302f053d1d4a. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/JPP302100225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x545950a81f7cef9fc1ef67e017f95c49983daa5d7f36da80ecf934f24a2f9519. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/JPP302100229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8b3e5e576d19a3a8ff0d17ac7b598d7c05c21af925a151f1ea3bbf6cf191367. 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/JPP302100231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd94007d5c0b63aebfae81886b52ed29f5e7f1d83a8f9baf1555bd854c6e54f56. 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/JPP302101957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x238de9d1aa454775f1c7b9f96ca69ab077d31a19ddce183603885f309549f616. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/JPP302200097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79ecb0078ca1f5a30adcb2068e16830d629143ad3b49ab8ba627cb08f866aac9. 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/JPP302200350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8442bc5d648eed79daf8a341b2a4b9e1b2900198be15bad3d6cf4945c1e82815. 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/JPP302200517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd70f872fd94ff10f856b4719444e54b3f33633e41edd32ba013286c08f4c5783. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/JPP302200520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2932d86c5c83cc6bc55f44c78c08eae5ceb23c3e233fe7206e4ea8264f9b666e. 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/JPP302200522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd94007d5c0b63aebfae81886b52ed29f5e7f1d83a8f9baf1555bd854c6e54f56. 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/JPP302101957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe114ed28d646f50c45b66f58d07f20e256d9455086b6fbb630e53c0e25f36293. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/JPZ922309918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x395fa076dd06d10bb670c8b6758742b38655bcd1278e05290211be8e3dae212d. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/JPZ922311410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe114ed28d646f50c45b66f58d07f20e256d9455086b6fbb630e53c0e25f36293. 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/JPZ922309918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1ff2b04704227328ed66efc08c4b8b65e3136293cdb5591987fc47fb089f9d0. 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/JPZ922400195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x246122c397853c3a1ca98fb53be0dd639a124ac41e2891be48c676770172be93. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/JPZ922502366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98125b0438d768733eb05799e72396c8c0622615428b8dd01d980b8148fe6d14. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/JPZ922502367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b852cc7e43fe16f4639bcdf4877ac1240143650ccc4a039ea0a99d991c46917. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JPU651502860.