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 0x43ab43b8103f69d4f4861d2663d3fe94f2efe046ef97cf8c02c41edc38d69242. Chain 2 (Bitcoin): anchored in block 953808 (2026-06-15T16:45:15Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f4411596-9c47-4168-8985-fde345c2249c.json and https://artists.proofprofile.net/proofs/artist/f4411596-9c47-4168-8985-fde345c2249c.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 0x7ac10dd2ad4b7cf8a02d4fcb8221ccc9fb0be61a5a2ce9a881b2ac0a544f3d47. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/UKXN22597038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x255c33d4592838562256d2e326cf0ab0fda4efce34090a3eac82f289d6e5632b. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/UKXN22597041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25aee704c88591766a66a29f8fec615739d7c1765c8506f4ddcf8fe69f683e05. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/UKXN22597042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a7afebcb6bb92c36a942afeb9a30c3095c0a7007f8dc7ff3f8f943609af8cb4. 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/UKXN22597039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05671454f9c2ecfa52851bd9bf9858cd58452d0c7badcbad14b5aeb2fb56db13. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/UKXN22597043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8776340f8346b5a9c9b352eeeb4c8b6b7e3be37d713c582adfb720bcc8c1d7a9. 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/UKXN22597044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x674e69f842872a6e6841a8304bb9ff8e087fc6dba1a38b88a032b34fa16e6173. 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/UKXN22597040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc7c7bc5623eba2c56d6de788da8e70ab536bf70dbead100ddb48dc946a23f40. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:04:03Z), 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/UKXN22597046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67192130048f3a40ddb6cababf0e3443fb6e9c4aa18b437c344df02b3ad07fb0. Chain 2 (Bitcoin): anchored in block 958572 (2026-07-18T15:47:37Z), 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/UKXN22597045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf38539ad876a97cf40f719f73c040b21cde7db2779b1b8df06c81a381bae50a. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/UKXN22597047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x316690db3311a2572fcd393267efc652c5d1753700ef4ba66a4ff8b27f610eb8. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/UKXN22597049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x306c4d58e7659ce95a4cf03f67d1ea8ba77e37efcc0d2a21b3a9b8db90dce705. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/UKXN22597048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2cae230b8144ca9548314886f2d797bd1c1f11ff95668a01921971dd439138b. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/UKXN22597050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70db0494d838b9cbc8d18c43dd93c705da157353b866818bf8d173678855ed36. 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/UKXN22597051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabd6ab6b6c26b94a719ec2a90768465568bfc637913a4a3b6a7612c21c69e9ef. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/UKXN22597058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a6ad64f461dd1bca3bef4b503b88d9d94bf9fcc85561fae75776f27e26e4cb5. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/UKXN22597052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75aee5ffa198d987e6cd07b68aac99c94a81ba6ef13eb0444ac462923358879c. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:42:35Z), 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/UKXN22597057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6acbfa1e70e1f01f6cd9955132274730548f2bfb4dd35382f408e0caf5fac16. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/UKXN22597053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc53eb86d64ac32da0834483436f46e6e48049806892eb80fcefa16dc47c423f4. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/UKXN22597055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f3fb5c5f866235f6a6bb9b5eb2520e13479648501607a804080aaafc7fa9e58. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/UKXN22597054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d0d0b9159fee18a16bad8b92a96a04410323d8657031a0c205a4cb837af5ca6. 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/UKXN22597056.