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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6b9c12794e78b525dcb3072f6d3a3a37fe503433c0cdf735955cd90ffbcdafe. 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/73a6cb2b-4740-4768-a82b-aa1754e0b1fa.json and https://artists.proofprofile.net/proofs/artist/73a6cb2b-4740-4768-a82b-aa1754e0b1fa.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdda5c9dae27a56fbfa43c709bef426e3470007f689fd050f2c91fcbaa1d2df22. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/KRA531900046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa58fd889794d073fcc557308ec5918916aeb061d33dd6ad691dd1199c4929690. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/KRA531900047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00ffc01324ecdaef7103c3439976dad880debea5514ccd4ade77d7e65215c182. Chain 2 (Bitcoin): anchored in block 956425 (2026-07-03T01:28:11Z), 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/KRA531900048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4094492a70b20ad9584c3c4b96af30b926e1adf0fcacf3ea97516d08e3eebc04. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T07:27:09Z), 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/KRA531900049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4517d9804472dab2173c5ad65617c7051bf3eb0ffeceda49e6546f526f7281eb. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/KRA532000004.
Girl's World (Original Television Soundtrack), Pt. 3
Girl's World (Original Soundtrack), Pt. 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x331cfd199abd7b527a2634ba1f3d26dae612e9095496acd7707ab2458ce1bf38. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/KRMIM2135950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29e9255fe2253fc34885531a8e286622b37d6c4de3a76fa743a32fdf7f0133cd. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/KRMIM2135953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd76e8394818da1bed5acc6423e5f16039371c70f6b0a9de18257000f3d5cde6. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/KRMIM2135954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x042ce2ea11dfe0b0c57accd05e275fc56ac99cfa95f06f3899752e04ad37da29. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/KRMIM2135956.
Missing: The Other Side 2 (Original Television Soundtrack), Pt.1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x191e36681dcbc0b17090e4c80f53aebad6347ae507d38dd3d971bdd6567fe2a9. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/KRA382320111.
My Dearest (Original Television Soundtrack), Pt.10
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20f1b6c44f389f7271596c9fff0abbbb99bff327588b1ac65b6df3b87a47ba43. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/KSA002400996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd06665c882ae6b1ca109b56751d7655bdab4e6ae0c4b7a866a22e3f8f5a5aea0. 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/KSA002400998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3556ed043332485eb42e2bee218e78f89189409dd9a56bfb7b045eabe08eec60. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/KSA002400999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x457db12aef33856c6f51b107ef2ddfc666e0514c16df0c56bc23788ff2f9e660. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/KSA002401002.