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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c9fe4bd9ad33e20f51a08b2fea5099b2b533097e49b768d36792b6d30aa0f9d. 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/ecfe3290-0a40-42e1-ba24-bd51c168c9fd.json and https://artists.proofprofile.net/proofs/artist/ecfe3290-0a40-42e1-ba24-bd51c168c9fd.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x556ce6e416981f449b21b89c20b2ba74be25226ebd538b269e9afbfe46571b09. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZHNA1996362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f8ec5fab80c76594b6133437f82b6463d8b996833fed110fe769fa33271603c. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:51:56Z), 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/QZFYY2010718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x898a7db29d08d260e59e3f73fb9c13b9a83b9ff1f9b0bc59bed284da008d85b2. Chain 2 (Bitcoin): anchored in block 956430 (2026-07-03T02:22:42Z), 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/QZFYY2010722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf3975cc4a7ebe5798adec428c4aa2d82f757cab99e6783f51651a45a7feff1b. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/QZFYY2010724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91b439b0431b905a506babeabe2b2c813de594a83f9aae177cdf13321f25d1de. 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/QZFYY2010726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cf570bf08f6530b16687dc2e04081778b3dec983e67dc78a5ac74c1c4b37399. 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/QZDA72028905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56b9243337582f689cb58fb6b16bc5e5ce8f67f04f246e7982bfc514935212e7. 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/QZDA72028906.
Lullabies and Bedtime Songs With Baby Joy Joy
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31f7957dfd32d9b2ac8abf194ac6f2fe987d19572560d8f3932886695737eadd. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T06:59:21Z), 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/QZES82026592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8e07ae4492154a1e6b04aa46afd8afb3894bf50345c8734dfa5aab1c1bcab5d. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T03:56:37Z), 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/QZES82026593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97f37cb0cec5fa1acfe8d1fc511f827c6df1585698d09f38b75d35c2cb6a8a05. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/QZES82026595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd36c2d88fd25fc1b92429c49c4c7faf77a5e1531f681e23d4a08a147a05b1d9d. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T15:30:01Z), 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/QZES82026596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc25e5ea2b79a2d7080799e41cf0cf5fe8e2943ee024a94baf1ed94a66fdb8b63. 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/QZES82026597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc17b2dc9271c0a5b97324ea7426d3fb683cfe26e586e236793c87c2a333b86f8. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZES82026598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f9bf6a4172b548fc6486fc156e80e46e2adf748aff2e9a070e4c40ea8f58f8f. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:45:19Z), 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/QZK6P2021879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdaa25b1f14c8de02d49e64ab9edbe3787071545d79624d965ed42b295e82d61. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/QZK6P2021882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5394d422081a790ca6f98a830dbe3d622b736261f7405c96e93ae6e5033b3db5. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZES62113717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5b52ac4f78a7bd4182b5db76d819a29e2a6566ba71567c1a0e2fbb1a6a90262. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZHN92134670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59ad009b1f8b76aede5ce09059123f748e12785b3c540fb22f94468d9ea0e7f3. 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/QZMEN2165752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xece0df018f27ccfd56f2e3ffb873c8f8782b3bbcba67318096bc9038ea041257. 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/QZFZ32224735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e6006fc7fdb61a1a0ac9f217ab5adf6db19950cb2007a06869e3edc5b532b67. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/QZK6J2225709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc83a6e8977b69b7ea89451b322864d507ba0f1ac1333a8c80dd0ebdb99ef2d9e. 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/QZHN72368874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd215784a7802ea2fc059eee2ca1e05bdc779b01df86696f3aa007f164f90ff30. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZHN72360363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2eb9225ce179eb23e87ca39c45462a95f569fd23a827090b23e7c27ff29ccdd. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T18:03:44Z), 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/QZHNA2362745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x638e534910cc4a6b1f15b5d61b0162331f52cb3c25cf83398a3e45cf8cab8bb0. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T03:59:52Z), 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/QZTAW2376485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbfdab612df1094309d626bb86b8666a96cbc56a1e1fc536eb8cced60300fa92. 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/QZTAW2388398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aabe7675a5851ffdee9111de65fa5234e00e97247ac620032e359dc6c9e808b. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T07:20:45Z), 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/QZTAW2388402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a1cfa64f11b85fa391198156ce2edbbd0b73e45e00b1de4aa534ed85aba5c34. 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/QZTBD2336324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67ca8aecf49ab129276b97a0464140893fbfd5e4778ee2bd2d5c6186d1c248a1. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:54:06Z), 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/QZDA42417785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d08d183f1940c3c72400cbcb9a7dbfab09fde6f00248abec9f00881b2808ff9. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:10:18Z), 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/QZTAT2437868.