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 0x587be9642a463d8b401a20cba8171ea4b37146874cac621bf60e910e7fdc9189. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/675bdf5c-3519-4947-a304-36e88ca1ca35.json and https://artists.proofprofile.net/proofs/artist/675bdf5c-3519-4947-a304-36e88ca1ca35.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 0x3a7fece180c95cdb780309cdbe3a7721d7ea16790beb9aa42432d38df81cd762. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/GBSMU4064977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ca2f93e96acae53ba5d33b3787b1be0024205ae5ffe7486b613a5c6c24a9fe8. 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/GBSMU4064978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb626cb3fdccf1b159d9565b7e267d53c51b07b2815e7495e596c4d9ad38ac3d0. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:05:59Z), 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/GBSMU4064982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81697d023f784d5c82f8060508c5dcbcf2a60bc83d3cc2039b103e7c18e24bf3. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/GBSMU4064984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5e423b719b5012d97e296a716bd310816cc45dc5e6b01ce7a78f7576dc0adbf. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:24:14Z), 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/GBSMU4064985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca1df7857360c492fb8e54c79232e38633899eeda026d7c018916a3939a48f8b. 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/GBSMU4064986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda81d9e6668ebd6689943caae5ffb2251b19b5ed3328896b46ab661392ace357. Chain 2 (Bitcoin): anchored in block 958493 (2026-07-18T04:34:53Z), 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/GBSMU4064987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a04392792df409dd4bcb1a3bace31352f3c72bc39e7361b1a83f9ecc45890fb. 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/GBSMU4065030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf728c2bfcae5d4d232d73400d16faeab9ab6229433875c37ccb7997036355b60. 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/GBSMU4065031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a06a7440619aca23edc712090a487b351f7ce493dc9edf5b329660d24879409. 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/GBSMU4065035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad60f958a1f4ad8d7151365d7ea6ffbf9c6e9dda157862ccbd7ca1659d407a0d. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GBSMU4065037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc60ec2842e64f48951496e4640b08c3ab561bfcdd22f8af4fa95be7dc94e426e. 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/GBSMU4065040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4778768bf70f2b106b1c2facb48fdfbd0d1fc7bcaff145befbc5a8e8116ac54. 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/GBSMU4064817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x643b5d5cb72cd85b2951c4e8fa116424169a429e987d718a234bb068b24360b2. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:35:52Z), 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/GBSMU4064819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd971457766d1bdbc86006ab4756795cfef7e2ef25a68e0efcaa0ca825dc7798f. 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/GBSMU4064820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31c60016c621611e3b47f470a2a03322e5f42f27a58304f623afb0aada9dbf06. 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/GBSMU4064821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb9075ce1dfa52f59f75846a0f4d39ad803f6076c36d717744f4a5c352f1a08d. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:39:26Z), 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/GBSMU4064825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1a5ced4024c7163d5e4a8b51d374034db5f326cb41d42d0ae8ccc6ea36e8759. 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/GBSMU4064826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ed45ecb6ef9060dd0903fb086a859f9238ec03f37e68f0a8de64b1218716e5b. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:18:32Z), 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/GBSMU4064827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd277af94227b2c7036590e57222c561ad3fcd0062ebc0c00b1223d3261c49f1. 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/GBSMU4064828.