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 0x5f5ba0596573fec8e5fb66adef552a34ac74230ca78cdb0d0627d6c9ce3f3842. 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/2ce201b1-6757-4544-bc9f-584274b1ac22.json and https://artists.proofprofile.net/proofs/artist/2ce201b1-6757-4544-bc9f-584274b1ac22.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 0x6f8dc1ef59bc0342a9219ca4ab9cc6c1f6b85efc101c40e16a0b1f0a119bc24f. 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/TCAGM2260052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe5ab30e46e22db198b6155173d479e5508f3fc6172645d8c6342a0e4502d329. 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/TCAGM2260077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddf92ceb1c9d54e03273594cb9580dd3688aa3c86309e10ef0203aeb01a5afe3. 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/TCAGM2260198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c4dc323a34e90e5e85ca896458f498d02f73c219e97483769e6bfa4b7785127. 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/TCAGM2260130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x193d2a530ecf033b8383c443dd656d9fe50829ee08ecc4ffa4013821dccdff93. 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/TCAGM2260176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6da364487ed645a628c6c8366b624d26b0aa7da25d8a01d84ce60397c647fb6. 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/TCAGM2260124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d2cf10e185a4ef709b45d3050442d21b31ed17b8e84a1a7d61f4dbd6ed19027. 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/TCAFY2127262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1f55f06c07068474d479af2b7f685711815f166b679126e67b5cad378ce0038. Chain 2 (Bitcoin): anchored in block 958042 (2026-07-14T18:24:07Z), 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/TCAFY2127269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11975567d6de1f1c44eae3fcd7df8677c56a2d653fb7af4cc652192c8c32d3d1. 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/TCAFY2127281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76396858dfb920cd6d222341b22edb939805bb64b55dd6863b3aedd34d95283f. 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/TCAFY2127353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dac52ac3782d1938346d8599401423e6e01b9210d618337fafb73d43d4d7f6e. 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/TCAFY2127617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd46c6c2b4c7337c842774bc35f79c6a82252e40d4c6443da038963d51a5b745d. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/TCAFY2127255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc2c2fc3c037e2381290bd41702149f7adb2c6869b1dd88e33a680fdac2f5792. 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/TCAEN1977362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4d91fdd4e0be7dc0121b8192631c2ac0814ecfc6ae6b54896fdd5228d5ee47c. 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/TCAEN1977369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50245f0dad876f0278f3565c61aae6dfdc326a5d53d32952c9928e2e211f3fb6. 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/TCAEN1977373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08dd41d465a905fe739c4726887781cf8d067a521584d6da15f307447948ec45. 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/TCAEN1977374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4697fd30f8af3409d6316f12245dac5b44b28e74d5df86c5eb0283ed6e791de5. 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/TCAEN1977376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65e361ad2e6a79159e99bce934668c98f0bb1ceb1bf42f34587d701264ca761a. 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/QZHN52486562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81b611b46da2f37d7a9c4f09407c51e47d357fbf4bb18a36d460518168d413eb. 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/TCAHF2305714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65e361ad2e6a79159e99bce934668c98f0bb1ceb1bf42f34587d701264ca761a. 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/QZHN52486562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb30b5b16c164bd911b5d1563c61a80469bc05930c9e274c760cd610636ec0c38. 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/QZNWR2495550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb94c293a76c5d0bcaa3359c18ac7cc44a47947f957c49370a972a833c1eecd01. 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/QZNWR2495553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb0e59030a630241b48138a3b7b6a8cbb85bfac4a7e580d919915d0de9c7d2f6. 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/QZNWR2495557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x135c5df037eadbafeae2a2dd48d8dce405a7f320432c7685d47717d352b55e1a. 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/USUYG1485135.