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 0x7c37bebd9818e42afd94fc58bdc2bb27978a04ddc6234cf22b4063de0325bc06. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cbfc4f2a-dff5-4936-9d1a-7ec8813b06b9.json and https://artists.proofprofile.net/proofs/artist/cbfc4f2a-dff5-4936-9d1a-7ec8813b06b9.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 0x64602f595c2c7064375107935fa17b28358c1569d2887648543aeb94d9b9d48e. 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/ISA220900679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37e523c0f9b5c9129df734041d723df8d3ef69623893c3eef92975103c1eafea. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:33:01Z), 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/ISA220900680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25e08684da3d34516f7d7bc0b7863bf5b01f10d52caaae543e16df96d3a97184. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:45:54Z), 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/ISA220900681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa85e690e85570edc91d2a475b34c581fc210d5a0ce712603a4ea1a8ea277b13. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/ISA220900682.
Á föstudaginn langa (Ég kveiki á kertum mínum)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x172ff9b125484cb52d739c1edc4e604dc8dd73f908243c6b4a7b1d0cf897f3e2. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/ISA220900683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf94e34c2e2a1fecf9dc72d6276ce890b8c725ce3e38e756ce890c0d7527bd67. 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/ISA220900684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d01564da08cea0da660899b566fc36c2bdcdccd46b658c3dec435c913c30c15. 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/ISA220900685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38315227e0ec295ddf28531dddd71b8bfc503a26f475411a77d04fef507104b6. 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/ISA220900686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f18ad97ce06f4f6301ef64bc8442526d8f72b08658cff29bb7adccb036e5d0e. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/ISA220900687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11e323ea55001c918c3cf760f8291add956325de98ff302e1bf28915a3160005. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/ISA220900688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe99f7caf34238f9f5a847ed72a5a6d535062e2c39ed49e1a48136b202a2c4194. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ISA220900689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa14d48197e94221d8d6779c1cdab9260211cad146f6560033dbc6658e48010d1. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/ISA220900690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeabedcdb16dd4dbcd0ba75bdc634b43bbe495966c539ea4069713f4739d7a3b9. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T16:35:36Z), 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/ISA110904401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16f7ec04f45d6dcd63d6735b178fd10b67f121c83c9f6f5dcfa6e2a2876ce12c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ISI109500407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b71ddc89a00604a8f8ae4ff2de8782c4159261b11a1d02a20cefc4ddd1aea01. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ISA110606120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e6f38c215526295419f7c90e3176b03722391f6a3cade87131323ba3fd1ee4d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ISA110306218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ac5e6bdd9249eb0119281d70e44827c457b8a9d79d87b9a1069da1f6170155d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ISA110603104.