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 0xd43c8733bfa518af09a2c11c41d2db93eb050fc328f53b0b099b1eb883a563d3. 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/b79a7c3b-155c-4776-989c-9cc0ac479104.json and https://artists.proofprofile.net/proofs/artist/b79a7c3b-155c-4776-989c-9cc0ac479104.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
South Session, Vol. 5 (Versión Alternativa)
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 0x3aff53a7be3ae1423bdff1b5d8481add9fdc66e21a649e4f7a7cad40b66656be. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:45:58Z), 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/QZW9K2342912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16c1f754f6233ab929abf1cad0d907a2555519995f1ef968f4c43111df15a8bd. 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/QZW9K2360517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bbc8cbf4cebb73a3a6728f62197021a64f22d35a04048f0164f9ea0823054d9. 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/QZW9K2369232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17f2c908bdc61ce5933770d6336410c6f03764a0555f29d2d86fc5cb2225bfcc. 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/QZW9K2369234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f6b35cc1752497d8df9bdee4a162ea4875dde2d10e9dc908b873b98aaa14801. 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/QZW9K2369235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33949329546b61c1cfe493df55399d6b79d5ca14eb06ee1dd393ac0546140acb. 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/QZW9K2369236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02018643db726070f1bd77faf30a12a05d4628a25e7e4a5ce708770a5bb8887b. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/QZW9K2369237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a3c9b770972097924c67ad197067c741bf9cbcfbc44450ffa6a5b2933dcbf46. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:07:47Z), 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/QZW9K2369238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b6d21e00e69e833403999aac33476982bca5247c73303db8d8a046ed4f6e717. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/QZW9L2367192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57547e33cb3f026f31893575b569d4369ecd676c2c143a71fa4b39b26e9b78ba. 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/QZW9L2379231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2078a732462ffc4edbfc099704d4a4057ad224384c8b5ad39acc819884f774a0. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/US7VG2490941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cbfc9d6d273bd7f19c0b76bd1cd24be51802813be0ba4c0433ba058c21e6b2b. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:47:48Z), 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/QZGLM2456555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4674acbe50c0c67ee689ea23615f709391a5fbe5ee7e36f97bf4d893c727020. 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/QZMZ92478813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f3644da35af8cbdccc5b78eae5895ced970e88ec191efc6ef8a57ab7c793309. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZNJX2403941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34c7dcd209fe2fd196101fac7f19ded21e7523e8914a62d2243e6143fd4e9329. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/QZNJX2494305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa55f55d1ab105fe6e2fb7b987cfe20491723742be7da559acba2c7b87528d635. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T01:37:00Z), 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/QZTPX2408859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd45423608d41d62ffe55e415407cdbfd4803e887783527e57d091bda8779bdcb. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/QZW9K2419346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x865425487dcd4ec83f30d3a51930bdd8105b05ee363d249b0cfc9133dc1a62e9. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), 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/QZW9M2432523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a833feec09170595e368e18048ffdcfc9d36040cdf322048369a7c18cec5a74. 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/QZPLR2557852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x054c49194df558689aa28b99e79e4853428f663ecf01b445f280a0e2c02f6770. 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/QZNJY2599924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a4aeb2ed493cd1ef4f29e81b42b7bc3bb1db16dd39b0f336aa6710ac993174f. 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/QZTPX2521911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71c6f82f2b5e793e4240aa070abcda100a7a7d53011ebeebccf09cee5046fea2. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZTPX2554400.