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 0x0595ec3698cdad3ee576a47820e7bf098ea00c9df6134e767aef0ab37a39195c. 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/520d01d4-c25c-4a0b-b098-32f09fd7542c.json and https://artists.proofprofile.net/proofs/artist/520d01d4-c25c-4a0b-b098-32f09fd7542c.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 0x3496952159c61e9996a5d43bc7a9b0f72d6fbe9c67ec614e89378cf5734ffad4. 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/GBRKQ2152595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05f0f027ce27bde4869c0dc28eef32ae93f9779b38bee78893d49895a45629ba. 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/GX3Q92404853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06d26024457245689dc503a85e11afee129d6b555fc6275e0295e379662ec781. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GX3Q92404854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1142198f3e5cf58a1cb0597ad70bf59952032dd0b9663b4e6b2ae57e9c137603. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GX3Q92404857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3141f76476f5538ec9bd5df1e0fa44929a4e4599a248f568f0c1ed2750e3fa95. 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/GX3Q92404858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fa4711171ea0e19df538485535380fa210fa321bed960bc429ada4148904d57. 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/GX3Q92404861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8107a600175dd89faf2cbedd710cf446c09437cb0cb618d153ceaf24a60fdb9. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USCGH2395851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b146f45e22cf56a8950168a11fa35effbd112c5057cbc9924bb7170dbb08bb7. 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/USHM92103185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6613e571ce9f8bb5e63d94f34d3477535de9dbae53a5e2348f036cdf7b41971b. 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/USCGH2395852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64e894b38d574f99d30f27b505d17049b830ea0de2fdb71c09a4a1ab1cc21098. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBLFP2222812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63f5130733e8f220c1b47b6d6c14e1f32c912d290e68f50c2ded34c80298202d. 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/USCGH2395853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56d594402b5768758b0302848177e556fe0c0ccafcbb0519281038fde495c1fd. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USCGH2395854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdab205656571f69d43e354f36cbfcf84e04f3bd3967f21ac1d9376427f22cd84. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/USCGH2395855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66d1ea1324c411ec8d920abb7b75d03228770793caa4a0fec940ec6d83435965. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/USCGH2395856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x986cdea3866a777eac0e1cde687cd7635cdef8f4cf7cda3763e28f220523df4d. 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/USCGJ2201885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77306b64fc1206e85afa6448a280a4616af96c722b7dd65746e19a445c1a4c7f. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USCGH2395859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf49f82851a84da6ceb2dc060a09a9f7de345aa93154b43666b0ccf4bb398cb7c. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/USCGH2395862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e0212bf71040b56d8c0131a21773c1fcb66097ac5b3c05458d5eda0c30cffde. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T19:00:50Z), 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/USCGH2395857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a0d48db357dc4e0a3141794251c3f02f8d4c0cd0bb0c41d98af8c4b67e1d3a5. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/USCGH2395861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41be8c1ad215a83d085be1e4e6823df234a80f6e6a67a99566b40305ad3322f0. 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/USL4Q1952593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bab8c4690e01f16f86c439717bd22e6e58d52ecc5a6d9af94b4aa0fd0a4b339. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USL4Q1952594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3877b4347066d05eacd619cc2162ece112f17ae164f8df897ad0622fa84a603. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USL4Q1952597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32bef1e30aec14597589cead171baa09619f39ffd8ab600fcd589a44224c683c. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/USL4Q1952598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d74ca21834d16d5c91e6b9629d01abfa067bf830ecb4906dc361d1468779216. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USL4Q1952599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61c99c896813c8b9ac3995d5685633469ac082ac891c9a53b6f6d51d9255fe30. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-07T16:54:37Z), 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/USL4Q1952600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8b475ebe31358518cb3947de28345c0e25fa9134c127eca8a47e9f663fe14cc. 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/USL4Q2358970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f18865d2b9f1d8e7638b2b2e2495bf951f2a88866ec11ac3ae52ca11061d763. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBLFP2272955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64e894b38d574f99d30f27b505d17049b830ea0de2fdb71c09a4a1ab1cc21098. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBLFP2222812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x986cdea3866a777eac0e1cde687cd7635cdef8f4cf7cda3763e28f220523df4d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USCGJ2201885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b146f45e22cf56a8950168a11fa35effbd112c5057cbc9924bb7170dbb08bb7. 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/USHM92103185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ad73b4360c11a248ee768188163d4963d4de079959de80a71dfabbed3253765. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USHM92040718.