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 0xc7bf9f40d201d7c658affe51d200fca291ad8f81419f999975d0ae987fd08b27. 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/0e6267ec-6003-45a5-85ba-036b33e683bd.json and https://artists.proofprofile.net/proofs/artist/0e6267ec-6003-45a5-85ba-036b33e683bd.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 0x8d55419ad529062c1d943bcaf8832add7eb2fc2778529a6ba396cf3f736aedae. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/HRA101707711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93fe30e06067720b2fd3681ed19e5f0991b8e6a811e8a46b79744ce9ade95331. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:20:56Z), 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/HRA101707712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12c65d833d23b03b9f81c778cc08d4e690d00c21a55427297828fd1650a18675. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:10:27Z), 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/HRA101707713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdef8f698c519e5e6aef3db402bb16c7f7cb1ed7a827463e9c9aa81684361924d. 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/HRA101707715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17742cb75884e624ad7afa4ed942da206ad1f45f1b26e55ba679f2f3c3956a9f. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/HRA101707720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3da79bb7f2f2ea63654b25947c1b1f589bd8ab76e04934e691868893f3ca75b. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/HRA101707722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76fe0bba8bd72170c2c7aa507d7eb29ecd300a9f46914ec3ee054d194817aecc. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/HRA101707723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcfa99f112f86a75eba7a1fb24c13d9ae3d4133474aae1f53bc741f1d4238302. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:02:46Z), 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/HRA102109651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58f1e7a7a00a4f151684267bc96114b411e996b4462235337a860df8f215a484. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/HRA102109654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf02dc9152014f2ebe7b8edd4d80070b0285ebbf0aee3ffa35f08b0122eae2b95. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/HRA102109657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x104fae022c250c7187c15b081a9c34a98057b8edb7cf66f4319abe2a48f95de9. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZES52420911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3349d417682d6b9eac0a86649acb834db6a8bd4cd860a86e9c43e7759cda637a. 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/QZES52420913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b144fe33e70eace1fbaef1a5346332eaa51679802022628c8ceda9e30fbf6fa. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QZES52420920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x564de003c7feaff813648e280af3d6d33fe1e75f6e9284442ce22347751806eb. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZES52564264.
Progledaj Srcem, Stadion Maksimir 2022. Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ce631ad64c714d369f36ee9627207908d589627dd19d7bf2b984c305d01e2aa. 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/USCPK2219019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb067484d9484d49082be664e0d6c1cc1fe435e546ef194782c85eab815a7adda. 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/USCPK2219020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x477e146243832f8b46e5d64fb812c83fcea294435d227bd3a932e1794ae65042. 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/USCPK2219021.