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 0x3fcea01214b89d402c2621b540fc9b14b5cc7b1ca08f8cce378beb374bbc5bc5. 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/b972dae2-d979-4e68-920e-a3bfc87b7489.json and https://artists.proofprofile.net/proofs/artist/b972dae2-d979-4e68-920e-a3bfc87b7489.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 0x4f19e6d20739921b8cb19f3da18e1aeab27928865f7885a3a882ed02539bead4. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/SE5Q51810849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabd98263e148eb0f409377b151829eda412a0ca230d41b5ebe6cda2df731d0dc. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/SE5Q51801803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa332447b26880e2772e0b7941390ef3ede5216443fc1fbb2d8f48df11e4de9ba. 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/SE5Q51817347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ef2a756a9d423873507671cb82d17be86f1a98cf996a66d33d48870bcd16436. 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/SE5Q51811415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6682ec783e0b576337f2901766430c15c5156ba71d2ee1bc6c26084f6a68b0ee. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/SE5Q51822197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4ffb8dc78b920bff7c4d8789d923399aaa1f68c694a4298f4bdfab774fba5d6. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:49:03Z), 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/SE5Q51815400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda0f7a0184ca7dfbaf826d026e98e3c506fdcc733851c1cf806e287d6f347153. 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/SE5Q51826229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef9130f3ca4bdb31a949f5e10428f205b0744e43f1b9d1046e82df94940aaa05. 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/SE5Q51806987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab36c014d631b12916fd4c92e254ff1e9baa34bd9a2be7a42cbf04cde260a39a. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/SE5Q51810825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4376acb9578022925df67213414acb027097554be542b9548297271edf5bb5fc. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/SE5Q51823801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda42225ecb69917adefff34bf0700a8dd4e46804980bd0025c6fe4fd17777861. 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/SE5Q51822694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86848c8337076cd08a9e0499e1c1d8204964daf59b9d32fde8a1a43a149b1899. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/SE5Q51819433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed33a08174a57d9867a18bbe69ea13449198ed0f14b3d908c28fa99098712661. 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/SE5Q51816028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x218a584c53e6245872339f702e19464262f8d258d12ebe0078ed542666a6ac46. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:39:32Z), 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/SE5Q51815414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f01a4f59df56a63fb1af338a8f3ff50821adb334e3827a2c9b49e94477c154a. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T11:28:25Z), 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/SE5Q51804599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde65b8fdb8766f9cf669cfbcaeb1b4a77074deb6a0a962350ce6f2e7ddd58864. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:03:22Z), 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/SE5Q51808042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cbbbfedfa5302fe947783f6c47647fd646d26490b8598115132009663df3c37. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/SE5Q51821445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb45e552a7b818e30f17b537ff26edbf621de3e5fba2cae64bba4526f54c3a19e. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:03:41Z), 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/SE5Q51817080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb1377bd1e767a54e21a0bf7cb5e7ce97655d0af891cb6d79ba548a2edbf0ec6. 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/SE5Q51805316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd5f8a8ce0755b21f99cc9394a53acce54b1789c24367fc2661c5100ca4f40e5. 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/SE5Q51824024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x393ba66f48dee007f4ccd1ab813684c9df83dae6408951764da90aa7ae3e8774. 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/SE5Q51822179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85b7abf035fbc13784b2fc5094e9068c60886b9b27e42edc8f1e9b0b6c569668. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/SE5Q51811832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad91d91b526e2b1aafb596a5faa6a14995b9104e1a35a71fc8bc73681ab015f5. 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/SE5Q51816671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef43df17b85fb6e51c4d0388816fb45d5fac2c9f4489ffa51121c02c7ca0b17b. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/SE5Q51822805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd061eda356dbb7e18d13f4f760c2c5cf56dce1dc0a2eca4a675f5dad8ef4ff9d. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/SE5Q51804749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61e1ac5d9075da8985f6594422e3c84876dc2e256831d4c023bbfbc6b54c72f9. 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/SE5Q51825977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2587dff1e55985f227060e8e8b2aa5a2263600025ad4154fd990b9833a188299. 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/SE5Q51807414.