thumb|right|A private island with a summer cottage in Finnish Lakeland, Finland A private island is a disconnected body of land wholly owned by a private citizen or corporation. Although this exclusi
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 0xb94fe41a518c023654c127772c91eb4a0d26829086ca756b9837ed647215aa28. 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/c07e3b0a-6c74-4e82-b176-d33b62464e95.json and https://artists.proofprofile.net/proofs/artist/c07e3b0a-6c74-4e82-b176-d33b62464e95.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 0x07e5957e87f9fe331f73e72808617041ba333234d19e9717df3f945dd437bb16. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T04:00:21Z), 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/TCABZ1445960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a5f08fd93330f06e1fd1b05bec2636688dc4a57ee26d8d572642f4aa383d318. 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/TCACJ1561667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0537368cd65dec244ab0981723dc31e850970be6f9523c2462bb63098809b5dc. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/TCACM1604430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x352bd942b542cd917274e9de0f0b4e17d2af375210481b79b991ada72a71c58b. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/TCACP1653360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b80145c3bb056ec8b7b180cc6015ce47adaefb161988792bd0f933054b6cc88. Chain 2 (Bitcoin): anchored in block 958988 (2026-07-21T09:08:06Z), 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/TCACP1653365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a5f08fd93330f06e1fd1b05bec2636688dc4a57ee26d8d572642f4aa383d318. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/TCACJ1561667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4a2477883ad770ed8e8805304cb5acb52905cafbed4ae874e54d32a5fd9f919. 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/TCACX1780815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85f0bb1f15cddd8002183c0631917bb5c080ffa26bd23bfef57bdd138bcf4605. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QM4TX1965806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf93bd3a4d9ff8006f33660aa1a194888c2fd187ab1beff67b708a50c53a23251. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QM4TX1965807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58f43605c9efb81bdedab406218a5954cc164edf358bfcb5ae7a959cff2babdf. 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/QM4TX1965808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5efb8c04a16493238cff783e5296e634f569574450b26115c4a0a82b058fcdbd. 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/QM4TX1965809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1a0a4cef3eb71bebeb8c829f852019ea71dfac45479a813bb5a80e602529fa7. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/QM4TX1965811.
Can't Take My Eyes Off You / 3BadSoSad - Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c3ff13db5581fe29a723cdebc9b849d5700666b62e95f1992e49ba97df64777. 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/QZMZ92095630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb53d2ff4c9de336c9a000764a38bb7be5f95d5585c6a2da2a0f2b319ce1c26d0. 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/QZNJX2099432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f980a5f97a87954a296245023c15132862fc035124954817e423b2fe74eac07. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/QZHZ62289781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39514cc0428a0aef97b5b20570620f2f519fa3863347eb09b3e86aae6a53afcc. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/QZHZ62289782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45d7a604115b08c115516e2288f82e1de77421c66a0e0782dcf330fe8c7b2c15. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T04:58:25Z), 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/QZGLS2237028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x724f71a269a501e38c660f7b8622d6ad9bcf293ec4476f7a2c5e660e311ef690. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T06:38:02Z), 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/QZHZ42249823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71974f33c041ab387dadd7f801b85689c210b1accd7a1af9e5c7adccbbe76e42. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZHZ62223527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ecbe8fb8526fc3b42f444bc98625e90ff81d71e470b922c94e0cfef32822747. 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/QZHZ62289783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb855325ab21a9139395213173c8282f7526e5451b1bea4da5a4fe11670c97e81. 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/QZNJV2314794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdc1eaaeeb5db14493659973b896d732adbb7f220182e813747f8de6af4492a9. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QZNJY2332463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa27ec2f99e94b38fd944be2a4bcaaf4af6b797c6d1881792fdc91b7999821520. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/QZGLM2481131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a426f63d1e9642bec67f80971a32622966bca07b545ad7000fd2f4c9be4ab50. 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/QZMZ92472343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e23ed847b9f5643faf1f69c38d3250ac17bdb0783bc1235d08bc2dde2d7b893. 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/QZNJX2491465.