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 0xcac60537c335940d1386fc16856da44c5d674f3675cb810822dbaa22c911b503. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0c663627-c052-4129-a5d4-246fbdfe5077.json and https://artists.proofprofile.net/proofs/artist/0c663627-c052-4129-a5d4-246fbdfe5077.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 0xa887ded83e753a37bfca73b04c2229efd0468c52afe11a94728f741d2be030fa. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T11:28:17Z), 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/US23A1512058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e8631bbf3fa6e44983865618e55a037cedfc9f88223a0879060d41440221296. 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/US23A1512476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd65035c59405c8f7ddc3db415361be2f69fb32af7a4e8f0e5f42681fe0e1e95. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/US23A1512895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13ea12dc0ec66dff339c781b3fc90346a5de4223caba69bd0fdb26ed7cc62abe. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:56:35Z), 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/US23A1528426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdec1beac6fb433ba8d9a6bb3be5e7bad42a455f3a1edb8d02d39c7e6c4b552c4. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/US23A1528428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa67a514599475ccd48894f7d875c8ef8de8cfc0d7b45d25658152b0b0b4433a1. 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/US23A1530582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd65035c59405c8f7ddc3db415361be2f69fb32af7a4e8f0e5f42681fe0e1e95. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/US23A1512895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e8631bbf3fa6e44983865618e55a037cedfc9f88223a0879060d41440221296. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/US23A1512476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5b00c8bf83038c35fe86822b7169314804e5531c22ac04104df5299d837d14a. 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/US23A1536348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0923b14064a974201cf10c5ee46f6f5ab869ec03d5a04ce7447983c855fefd15. 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/US23A1536908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x017b165a924167514201968064c4012fea58e92d3a96e36669fce03b87b73d87. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/US23A1539507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x799e1cebdb84609dee97003cd838e75914f6c0bf7a17436556f3f005773a06e1. 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/US23A1539608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99bac2dce0a7d60e6fe06954a253ffa6ddf3f13536b5c77a33ead0301e6076b8. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:19:29Z), 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/US23A1539791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc11b7c34199bebf67d3436b55e7a3fab1f7b6b2f9e3f098ea61c44abd2333d7a. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:11:28Z), 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/US23A1542736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x499735f8b0fd493deab19a74f023a17a96b869c811f9fcd0d257c79b709027ed. 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/US23A1527948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aa141acd96c78ee8d3ca570d1595c51af6520ad580fc5163ebb02b47ab9e9a6. 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/US23A1554108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e32ca12f6967ca8cb05dad580661cddb3fbe6418bccc962a8d8e64c753936a1. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T10:58:33Z), 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/US23A1558018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x144ca706947437752b8841ee28a6a16a44b79b83bd2cecd057aa04c613f4328d. 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/US23A1559906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b8a88681cde4001cabc4169f15cc06477748873852205d584e8e29b844680b5. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:09:35Z), 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/US23A1574702.