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 0xdfaabdccfe6aa6dc9cce288e7b2adadc78026a7ea639822a9c9b1e77000657fc. 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/afe0408a-be0b-42de-a275-3afc1a2f814b.json and https://artists.proofprofile.net/proofs/artist/afe0408a-be0b-42de-a275-3afc1a2f814b.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 0xbdbf615e601a32e45c30172dd650cc4c93e4143c70bf8b362ac10fe3ec38397e. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/FRX452134726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b621f7a7ea22d40bbe40618beb876cd3e944f1b16bbf48302c409e516d6a1a1. 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/DEZC62250534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a359a26e6cf70be7149ee0c1838913020d15db338c07e799ef67fde4260d1dd. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:03:37Z), 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/FR2X42241186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45e96e8ce63dd19b76f4f75896b3fb3555074542a1ceed13fac7d6c28ace71ef. 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/FRX762235603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b1db2e2b53e7fad23b89e343ecafb81bc399a5f89bdf468487273d9edbf912e. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:05:02Z), 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/FRX762297807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0fd044efc19a659c8d935f3c6366b860e679a3a358637f6e29b72bffddd52b4. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CAN112201039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e5d6bee81cf83d6d79a1fb7d10eb234903fde1d5dd0ce468d8805825d61c656. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/CAN112300219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda49616c89c3c18708584c71f6b324a1910c94b628d4c609643b086d1f690f93. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/CAN112300477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5023c1f4a65dea6a8aa712fa48a2d5676c10fda8609189024bd56bb0453e9fab. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/CAN112300478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb67408e9fd8c576f9cbf14cec0c30cb4f9a4020d6674778fe830fffdba39b490. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEZC62343854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc286e5c4ba107660b05590d20140749470eb5b5e44f93995e377c219711abca5. 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/CAN112401145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72aa239c04eb38d9682f1c127d1c7e3d8fcd9686c84569f05fcb4cb19e9d4c28. 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/CAN112401147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf76aee93ce1602b891fb7a8623a8100b785263edbdfcea1b232906ec2ce1b4cc. Chain 2 (Bitcoin): anchored in block 958130 (2026-07-15T11:26:32Z), 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/CAN112402172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd00d989f6c0479fbe5a8b5d46a7cce60ae7f3a9a5edb9c1f1dc64f00bd5483d6. 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/CAN112501908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fa42cd236f93f0315f96157831cecba09dad2cf7aaea03d2df1e5742fbf2f65. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/CAN112502065.