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 0x6c7dd9e2f58ffb549e05e9ffef001735328898e93e7cf820579f084cdec3c7fd. 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/812a50d6-2ef9-493b-8ff9-7729f83aba54.json and https://artists.proofprofile.net/proofs/artist/812a50d6-2ef9-493b-8ff9-7729f83aba54.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 0x4253e0c6927d078e67562569e9daab83ce55f0afcd68e1dd37513c5a51971288. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/USOM81867301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76a352beeef4577cef7423c41ed12aa530992cf88ac1f042ea1cebd9fc253c60. 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/USOM81867305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x260a3d38ccee1541349d6b0c9e3fc16655476b2a8e71620652bca842e0826b2c. Chain 2 (Bitcoin): anchored in block 959003 (2026-07-21T11:57:43Z), 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/USOM81867315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdffd1ceab51ec725a9c5e8e0a30f5176054bd6cac20f0032d7e7bed3a4ebdec2. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/USOM81969301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaa57f11c11fe7990757cfdf7e28d084d10d02ecdf7ee93dc3a88b8823d788ac. 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/USOM81969302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7601e60fcafdadb73507f1b139ca515c849a223e2c60a9862d7d5839c6bd098e. 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/USOM82172001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e5b3a694eed1337b19ba124759bab15865be515e1f9fc5e53e816bf12f80863. 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/USOM82172004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f7be74cfa6d9a37fabaf6b4acdf1ee65ab6f52a4b69613b148952a20430650e. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/USOM82273301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x372bf48025351e116815b8b7eb8ee47b343bd279b88bef30a0df57d12d6dede8. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/USOM82373914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd134806590f8cc8383f31ad3cae8732eb9d05c03c649eb93058c70ee18e2a90a. 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/USOM82476001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2036c3c3c1ea5925ed7864111771fe06cc3fcb727ff7e25c8f6a81ab8165f6ed. 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/USOM82476101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15910d5cdae50f62c2947cde047b61952dfda5aa9d627fbde6527bc97cfaa2c2. 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/USOM82476401.
Want Your Love - The Jazzual Suspects Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1564f047a8bd708d4f7d82c0759b66091129f8d8b37c9a3e2c096f77a53fe20b. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/USOM82070007.
Thrupenny Bits - The Jazzual Suspects Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f9f6a61a39cbb018628176b39770c5448623352430f5a0f62b6472975c7e17e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USA2P2019603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb25ef4315a2d9eba8e8b7e336e41fc29ed69d59a15431bccd288eae9958b6e6d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USME31600196.
Om 15: Celebrating 15 Years of Om Records
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5b86fe066000f246af42d5cd81ac3c5dcef3d520673f5547cab1fe4cd7da695. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/USOM80936117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e92feb18e5c1776d84c980443e1c69c06a7e39c8bc8a60685d7cc35ab1f6d37. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USOM80831501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f5ece8a51c08433eb375e38004551115b4e0751e52d2b81c393e7e618336c56. 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/USOM80831515.
Mushroom Jazz 6 (Unmixed Online Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3e9d5fc6a4217f49462f1df45789ad7eddce738be8958771ad06f942c015d6a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USOM80833001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b2af9229a698786603de922c78eeedfab1e3a04b5490076849b278363e48a0f. 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/USOM80833007.