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 0xb68ef9106214eb697eb1865039e7b7b9e50bd5ea9263cd639b28345f3b38afa1. 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/f3a961e0-b22c-400a-aa1e-a267e923524f.json and https://artists.proofprofile.net/proofs/artist/f3a961e0-b22c-400a-aa1e-a267e923524f.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 0x9d97207d128fb90daa42bf04650d31bd8546f949d314cf4fbbdb23032f11352c. 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/GRDNA1600327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bdf4dfb78732b9cfadcb31f08a0ed74a2bb4bbfbcd10fee5d8734cf367689e8. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/GRDNA1600328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf4ea2d206a4ef631036bb97fc73a59af9457edba57f4365ea92b754cae3e9cb. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/GRDNA1600329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdc4b4995e46d57e412b7ef1f92652dd3678f267903988a360503e35963b09e8. 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/GRDNA1600330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbb240a31a690f6c94c13bf8f5c0a5869333d635f44fdc9bdfc0586fed96ebc5. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/GRDNA1600331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24482de8ce8d466b3559d46e410d61073e622f2552b10d6a181c60261c71c8ea. Chain 2 (Bitcoin): anchored in block 958678 (2026-07-19T05:59:57Z), 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/GRDNA1600332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8127a8586fd0cc43e3fa7a5749c3669dbd27a9528fe055d77ab727ec35ce12d. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/GRDNA1600333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1fd23e9dcd0058e6c981b02878e7a12539ea0c7b09531feff1343a30300b1c9. 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/GRDNA1600334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x575895b1e04a0ee60d1c41d210f59fd563d2f4894d149f1d259530fdb17a577d. 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/GRDNA1600335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98aa0ce22da07bf793209cb15845e8bbc0fb838cd48649f6ff7a2ac8fccf70ef. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:12:03Z), 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/GRDNA1600336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabe3be4826d8c72f8f4b27ec1ed3934c2e1f319d2b79ac3626554ca452ead819. 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/GRDNA1600337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56f723eaba2dea320bd87171b38e76e79535d973d2a214bf3fbf80e6fcf86557. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/GRDNA1600338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b024641978a13f087d42e6ca44ab47b9b353771687f191e3e2c7cd120f24a1b. 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/GRDNA1600339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadddcc76fc48adb38f5226fcc18c97aa2b514b1ed7779fb6bcded3384eb913a6. 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/GRDNA1600340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73d014a7f36cc2fe5d181bc501916de261e494a37329c334d2bf86f6f8f6ed86. 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/GRDNA1600341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2a9536f25d3b54a6435281175c6413266845fc634e6dd2486bec391fc1c07e8. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GRDNA1600342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dd7cbfc46f7eacf29d1a5763fb77814518a0d5115a14f7e933b96a8bdef3996. 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/GRDNA1600343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4dde68e13b870674c04eaacb1946c819ff5757694ca77a157d81098e4ad5b9d. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:55:46Z), 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/GRDNA1600344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa2f584d8dbb1fe5556ccefd4210cfe1b5913b2e0dacbe67a0a0eddf45325b0b. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/GRDNA1600345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5c9595dcc62b2876b5fabbae609b0604043430e5a89929e3ad9a41e86fef723. 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/GRDNA1600346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81fdd440d97a3655775738d0fb8f7f31bd23a05bc4bb5cfa09f2177cd0952239. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/GRDNA1600347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadfd3069aa9d5dba2454d3e5e22c5433e0bfba9f8206c7bc876363b99214dbd3. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:38:59Z), 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/GRDNA1600348.