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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f3fefc027b78ec9f8bc0a4ee40ef2d93cc9288adfac5330ef2ebe10898c1a36. Chain 2 (Bitcoin): anchored in block 953701 (2026-06-14T22:16:40Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7474e4a0-1c61-4590-8821-34740637a88c.json and https://artists.proofprofile.net/proofs/artist/7474e4a0-1c61-4590-8821-34740637a88c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Mundos Cósmicos (Original Motion Picture Soundtrack)
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0685962be0bcf38600f942e37f1b3f956c4bc279c0ad7e9409f0919d6b55383. 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/ES71G1705542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd5b8c74979556af992a52ef0eb83b9c98726b06220bb22ab8a3be8599f8c2e6. 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/ES71G1711874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28c603864e7af286465137b3a0f23f0147c55fc8d5c2fd30dde828e43c03e5ac. 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/MXD781800277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3da869f0f9e73671be8862a4ac24d9494aff21952a9a4e6099b7da831d7b79f. 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/MXD781700612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84add4d25c446ee89e3fcbb496bcf4123662ac670794afad3f2e9cb056e5286a. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/MXD781800279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x795dda111495a7ff3a72828d479b21c65bb0acc70ca15e93e17d3df97b442f65. 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/ES71G1630559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcec9045c3f2104f17c3e5b1089acf3027c29cde0cf0da2122ba091120090a0e9. 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/MXD781700613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb235e9d76a75cc36240b4521686cbe9771a30cba6626edaf7900208e1f3f1d54. 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/MXD781800282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c14631287f5c01e3d296bb13e215ec4b715546a936d4141be11fbeb7c2b6ccc. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/MXD781800283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a22a0dbebf903ef2481c236efcf9fa3f7d3f38c5c7d8468e1d9bbfe6fc55693. Chain 2 (Bitcoin): anchored in block 960165 (2026-07-29T23:29:40Z), 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/MXD781800284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3da869f0f9e73671be8862a4ac24d9494aff21952a9a4e6099b7da831d7b79f. 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/MXD781700612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcec9045c3f2104f17c3e5b1089acf3027c29cde0cf0da2122ba091120090a0e9. 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/MXD781700613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0685962be0bcf38600f942e37f1b3f956c4bc279c0ad7e9409f0919d6b55383. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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/ES71G1705542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x795dda111495a7ff3a72828d479b21c65bb0acc70ca15e93e17d3df97b442f65. 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/ES71G1630559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7addcde2e08231f71c65b3d557f457b2bfb65f6cb8bb04f865275d338fe50468. 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/MX3741500419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd60df9e6578d85f81921b281d9d2dd2b3ceaf8c7ca2bc79a235870d67ac3d694. 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/MX3741500418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa98780f6771659dd26020623c62fd38b47f259c009ecf9fa1d87a392d3f356ee. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/MX3741500417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2e304ba8161a6ae9c99f653931897ba03347efa53d9c22c77fbf4155f39d2cb. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/MX3741500412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0bc15c5921caae67cf19f0fea754a61a8e46cb9f92564ee754352b64e619449. Chain 2 (Bitcoin): anchored in block 960200 (2026-07-30T02:37:10Z), 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/MX3741500413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2b5ad4763b9aeb4929f1286fddb5657eadf51c4fb2802b6c4eac4484a767e00. 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/MX3741500414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6644c327cc84a000731534588ca78738739a7549280d3c85f16c79af096fa59e. 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/MX3741500415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8976e0d8f7224f299593953c21f32428c2e34f1612be86aeb6b9bfd105f2d77. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/MX3741500416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x877bd72bf46ada33f30a3ac7c4c021f4a7bbd9afadba84410c4a39c02afc2ae3. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/MX3741401008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c0dd452a5119dfcaf0921ba264d1c5d74193fb204e751ab3269ca5797c6fae9. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/MX3741401005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfa941ba16d1007e3e9b431064c90e268e0fd0a67e257123b1ffce512f974e50. 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/MX3741401006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69bfa061331e358dadc9afc0a94a14dd32580e8fa031f4123ab37ce203c090cf. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/MX3741401007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x877bd72bf46ada33f30a3ac7c4c021f4a7bbd9afadba84410c4a39c02afc2ae3. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/MX3741401008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafa93a7880e115a68b9f728135be7a8ab8a0a8297767847d9ffbda16594607b1. 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/MX3741401009.