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 0xdab071ddce04a2f3204a24e15394702795397a850e1be611f20e059e8440a1a9. 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/27d0045f-dae6-4427-9df2-b9c1bd13eb4f.json and https://artists.proofprofile.net/proofs/artist/27d0045f-dae6-4427-9df2-b9c1bd13eb4f.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 0x4e20818533b1be0b8b818458991a04b1dddb96c8b54d1ba5c716c8088738f287. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/ESA012244426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa56ed8c49651317502c7a15e15119c1169e390a63bc897d1cbc9efc76ca5d92. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T22:10:56Z), 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/ESA012244427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf26f61bb7c23d5ffa2b264882ef27b06f79648d71d706f44b17426633d3abc5a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ESA012244428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7068bb07b651b8013c1e253c03b7b25040e5a99c709e0db68d81f7887b9bba86. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/ESA012244429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x648e8da7b2bafef9fe265af335c7f8b318ad613abf50377f2e9c4c80aca33866. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/ESA012244432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a05446b0489b7c850944cac80d3044acc0380c3ed5e71d15c4b0ad677e471a0. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/FRX991593334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80fde577aedd7c6d3a28cf1ec13d4157b8767b90824bec50ee386877153e86dd. 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/FRX991593345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e3e4599f954e7a5020fc3f35b41bcbc5672ebe2663c93e4a9986a4f772163d6. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/FRX991593346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66ee1124f785167d0ba92a15ae2ea8454263c28075ff7289e1e518222656aff3. 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/ESA012240671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe81a170ccd261e77a87ae55c38c73197986e19bec018a26062a5d79ad5f4fc17. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/ESA012240672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b18661044c4510752f0d3fb23b5a913c24bb3f5736d77feb585c770a4d8a416. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:44:10Z), 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/ESA012240674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3ae587f7ffe34f852115dbcf449d79d0e2a39596eccac4e9abdcde3f3efbc4d. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/ESA012240677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0f9e0245d9839804eef79df90244621db98b2df1c61e56237634d969552e1fe. 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/ESA012240685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ac5c14d950da269365926de787430f89e4e1dbddfff5cf9f37b5d03eaef0487. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/ESA012260355.
Las Inmortales de los Doltons... En Concierto (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26e091d94a949c0c388d9ba66c8a068e46b848ec0ffc7e9d4ed75cb8e5e85170. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/PEMG90006001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3e0a74a9b6834efbee717c704f9439f57c7c9eb9a4a2d36fcdfcfa68a26054b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/PEMG90006002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c5451cb7292dcd57f9348c860f4c7de43d0c2ab2b4c8d4811b5ea071e2c6336. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/PEMG90006003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b5d004c903c443d72a37b79174b0eaa5884c389b86c8a9b7b481088eab4964f. 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/PEMG90006005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf8a1bbc2ba74938a6f77a1a88aaefa3fe145d5ea795c48ee3c19a53915b968a. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/PEMG90006006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa33f034ef482761848d787a76f1e34ee7d2ca4805fbf11d7e28f124322fe3973. 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/PEMG90006007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebc360c167f91e3b944b76f3a7b4e945ce8843b39413e742b48f6e803ba73de2. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/PEMG90006012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x565669b3d87ef428032974ca2ed01ffeef22ddd6a6fd7fd03e51aa545b577c6c. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/PEMG90006013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb179ee536c9462ec37b08c09bb61681fcf48c3d66476a0e69456bb26c23c4246. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/PEMG90006014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef0ff03079a11ec3aafc62b6cafd7994c79f62210096a9486ffd19feb362e6c1. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/FRX991593333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4f4df6785548c04489e68365d6b3e633892b618c015df3c6be1d285a922f5f1. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/FRX991593341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d8ab35e13e40c6766a4c39ef12a4b4b1e78c19bd6984ffffad65fb07d45c348. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FRX991593343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33ea92ae382862a42e907c0bf258d868191b7fc1a6813f3170e3f72c05f07683. 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/FRX991593347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f57a4949f20874296004749f1a808fc915192b1874059e0dde6d0c6712dd978. 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/QM4TW1571419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa33f034ef482761848d787a76f1e34ee7d2ca4805fbf11d7e28f124322fe3973. 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/PEMG90006007.