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 0x3f5e8cd3e04364598e55419d2d8f3d5f6b8b1ccdbe7c827c1cbe8f876dbca493. 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/daf07970-65cf-4700-83a4-4b684423a57d.json and https://artists.proofprofile.net/proofs/artist/daf07970-65cf-4700-83a4-4b684423a57d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Rice Records Story: Linda Manning, Vol. 2
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 0x0d7bf02ce80545c58cd8891cd6342eee67f4211457a11cc0a4dd05f854597efd. 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/USASN1103954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x830e7092f656c6bb3d57d11309a82518f8cb65b03fe608660e3d20639b7d3c17. 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/USASN1103955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fecafd69441543e9f5d041feca28b479ec064e03d10af6909518621027a6795. 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/USASN1103956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf98bf33221200b2edba7607ce3a135b4e3c57d096173a0a8f6f254daf1bdc59b. 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/USASN1103957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa129cec633f9d34a89b8a50cbd56d1cdebd267aaf34e35d9c7e563d7395744dd. 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/USASN1103958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0e5c865c553282c126789268bbad6ee222886d174ce052f0a339dac811c890c. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:37:10Z), 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/USASN1103959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3e3a5bb9de0a0f3c341f114c80232c0eab253c4e31936999a43b314679317aa. Chain 2 (Bitcoin): anchored in block 958399 (2026-07-17T10:39:51Z), 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/USASN1103960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x433537baa731d0b041f59dc6d3237557a06dd116bfced79591dc2f7cf7354bad. 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/USASN1103961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7f84f79c15b3b76fb73402470a9082e859a19b65ee42f4ce3429e41e03961fe. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:06:39Z), 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/USASN1103962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe366995dc381bc2bac8590b92925b1b9713403f00909440cb39764883e29895d. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:40:30Z), 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/USASN1103963.
The Rice Records Story: Linda Manning, Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c076559c8cf324a1d70707bfe38d9807a9179d0a8e0931f0190654dddb72844. 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/USASN1103964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x456ad2df74d4bfb92f99c2355a293a6e4e5cc546b3ed78053df7e43b933823dc. 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/USASN1103965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb494bc62b82c4cea098d10e44ef3813f8c5503e2283f7dbfe98e0c07ff7f40b. 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/USASN1103966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fcaa2d3ed3532696649483e060bef1c521843d09ca58dcd035d2c2883f15cc4. 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/USASN1103967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde2bd67afa33e3a41b55fa67ee4390181f06a4bbb2550ea0d76109ae7af48e63. 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/USASN1103968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9ba3b2384e92da512fb28fa9c6e3e00fbce796e663ad072c04bd73b32b5c5ab. 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/USASN1103969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a1d1c7b6757d37d441f51cd60091686cd9b6fd5750a9d1943196276fef6ae37. 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/USASN1103970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfe5b1866f85a5aeb733b7abd3dde5c8e0b7a32ed95c36f69a7dd3ff3bf46a5b. 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/USASN1103971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c3da24600b55df7a998d4651303302aa564227b6fa996c5e658eed9d2d7dc83. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/USASN1103972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16bb74e1f5167fe82b131565baf1e51f05b888723e272a2f7cd0bcc32a29f1d0. 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/USASN1103973.
The Rice Records Story: Linda Manning Vol. 1
The Rice Records Story: Linda Manning Vol. 2
Stone Cold Country of the 60's & 70's, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab2457b4d65dd51f600b0de34f270013c5ea9a9fe8ab823c9f7fd721a1af9ab1. 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/USQY51441120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c615e8e84f34b6e1e6298a69a73535bf014c09ef679d68933d57e2753f5460f. 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/USQY51441124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a3cfe40fe06066c2b00c1116b40b1d0d031af742ad83774cd6e971fe3720354. 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/USQY51441130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca608d293cc2e6f2b9d508321c087d9ba56d0c276709c797b8624bffd1d6a952. 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/USQY51441111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2f086af23982b69851dd3e25f172954bf8af6b0c7c58e2077a30af996a328b8. 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/USDHM2113733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58754ff4a64f088bcf37edb2a620e5fa5efeb5cf0e25261057fdfd7bf7777000. 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/USDHM2113734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3677b2a503bd65f2af6bffdf8013e8fb98b64f24625d14d51d782b1aa3e1bfe. 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/USDHM2113735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec5be187c69b220cb77a1de84d16a32b700fdae9b60766662060ac4795606c34. 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/USDHM2113736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7240b1ce22d14a3ce77c086d3cbf0f358d1a34d76c25f45b6e046ef2e483d94. 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/USA2P1371530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc3c4d5c5cfc82c0dad72ed84424fd244d36986b23a340a641612a1d4af72b2c. 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/USDHM2200165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7140072611b9efdd06417a1f0c8563c05b3e2894e2f155b017cab1dab2ae1c03. 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/USDHM2200166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x537f1b9af40a34eac8e5402cf61063ee56b6c3849c04372427f6f7e3c8af1c9a. 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/USDHM2112514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5a9e69f35d1d5052ce3f05c25b3e058fdec32f5f7f1defb5fc1d8021d343d99. 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/USDHM2112515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcaa652f5b4b9e030338c2ec92d86b980fb5a5a2d02855b3563710d3728b215a. 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/USDHM2112516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa71c74770341b9c45d9d92141efd447a12de60aaefe8333216310349071765f3. 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/USDHM2112517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x121198739227ecee2a2c5cebfc117a1b919eee9901191ef34bbd8fa5ff677797. 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/USDHM2112518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x309936280a3100824f99d684b2e313ed8c52a8f1009007e873466126a62c4151. 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/USDHM2112519.