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 0xd135416cc39a6e6f1fd63bf129dbdef937da1fac63761d66a316ed3d348d2d60. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/842675d3-06a9-4768-9936-ac1c1df73bfa.json and https://artists.proofprofile.net/proofs/artist/842675d3-06a9-4768-9936-ac1c1df73bfa.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 0x6eed9b02c2ebf5ecdb346876df92a32550e587f76e2e065bc2157e8796e5b32f. 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/QM6MZ1792360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x032e815d6c98c7b0bbb5d3d4ff717ec075a170f9bb7256e83f7dff6652d15d40. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GRLE10701780.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf5605f692a3158cb90e7820f08da1a0c7bbd575e3bc1d4adb7a122accba08b6. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/QMFMF1520784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b745a88c2695d61aee16b0770ceecc99f496f7171ca2128dd7d5f07de749559. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QMFMF1520752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78750b40103a1501b83793fcf5c98d6e6b483dc412011b5b8e6e9339e1214882. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QMFMF1520753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9186cb5b2641d342bc051aefb790dd03ce399b9a870e2bbc2ce96eed35788411. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QMFMF1520754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba690942bdcccd902bebc357cb5efafa0007f15c19dce614717551c1d2ed7039. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:23:01Z), 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/QMFMF1520788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37ccae0e2603dd2b643a47e5bb217b89080c5318c342a9b07a1a90df25a2f5d9. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/QMFMF1520755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a2f85a1a0f8ebcb7914b9b6438dd0b1a8c2fa5431d5f2fda91a85eab1befa6a. 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/QMFMF1520796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x687e5e96d3dcd90eb95a06dddf8e63a53df7273d0b163a5d770d626997347bf4. 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/QMFMF1520763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c6a9172fc750eebc59f7310c75bbc970dec60f60163d14015d1dcabf0948704. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QMFMF1520764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd586f684e042047617a15d3b8c403c608b521a67ba749eb118c89018d5259090. 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/QMFMF1520765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6a065e6abc0c8f4cd516a1e3d418e9abef30923a5542fa660c7753fbf1845d5. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T01:48:34Z), 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/QMFMF1520766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2ffd51c0e2392e6a06bcfb08032bec4b70136c03995b6774d41e3846231b1ba. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QMFMF1520767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb7adf2a52c599659f1517b142155fc96d6013075b1e4aa91e0f0a0e982684a8. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/QMFMF1520783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8876659935cd5f658d04116956b47baec6f1cfd2fceb32745fb4ea5a6dfc8539. Chain 2 (Bitcoin): anchored in block 957608 (2026-07-11T21:00:50Z), 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/GRLE10901527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c52df43dda746dc0c2c18b805c7b48e8470a2890265d9f490db65ce02c169c8. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T15:06:35Z), 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/GRNX11300055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79724ef2fb48716deb9fef5e59c4eb73664357cc6fc7c7eac248c0dc7c89c4c6. 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/GRNX11300058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe49e0ba81d41c4ac7889649c6a46902a73382c51cf07029f66bbe053ac9b0e5a. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/GRNX11300060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36612253ac5dd304a2225582d5e3cc284b208ce650c5b8dba8773cedaddcb7a3. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/GRNX11300065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0bb6c91f2b6989a4095592a6d549d81409589c41ff3c973c7e245b54824e8ad. Chain 2 (Bitcoin): anchored in block 958143 (2026-07-15T10:15:04Z), 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/GRNX11300066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe09b508fffece9f846cc9a98b3215aa4dd80afcd9fa4ff1e0af9eb0da7ab7868. 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/GRE011200189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc8c04c2fa124ac22994302b7a0085d650b0add00de4008c5a5f7505793e8a1f. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/GRE011200187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9869559c7249146acbda17c995bf53549cd0e1bc9a50f5e53045ee80b16a8730. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/GRPH11600472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ce7e27b83c5cae3b693c71b596753ce71d8a1a762f2c4dcbd7c98dd4029deeb. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/FRX201758704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81edce329ed31f63a124215f4aab332e02a9524e540a1585f7b47df69d97019c. 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/FR59R1985067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57cbc1b9597ec799ff0dfc12ef98612bc3e04b129e30cf37e3a87b7e7bec92ce. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:12:03Z), 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/FRS182151832.