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 0x8c73a11762f19f7df22de1e8f80a000e2b2a4a10a4a76625b0acc0427d0c4eec. 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/12811e6a-19e7-440f-8d54-4501dc250bbe.json and https://artists.proofprofile.net/proofs/artist/12811e6a-19e7-440f-8d54-4501dc250bbe.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 0x6bd9975858792e06addf761a90beadc20cb92c2eee3c1550e4e29cafb6c98364. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/US83Z2237922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4070d0f22d1f27dd65f03daba4581e47622a52d68b835086eeaf58751d447ab0. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/US83Z2237923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8afcfc983a0a18d023202e6adfc7ba91ecd09b240fd7901995cdc6aa8f3c8ffe. 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/US83Z2320530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6685f898e43b3033f1576b3873a3df6dce8484c7c614915ab7af74797e44246. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/DEUE12333337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74b8d7aa44f8e8a797a9d177d31b966e47f50894b4e0aca27c2f0763b3e6c0cf. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/NL8RL2331037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30f39a753ee8a26248a9546b82fa3983e505db3cd2932ff456227d13bd4dab5c. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/US83Z2475577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1c662bee659bd456c08d15def4d921b824ff200c6c7c0534cfd4066c43ffc02. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/US83Z2475578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x988f4ee632c365e71843f68d86638b664aba922340eabdf91f1f9d76fc1e03ae. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/US83Z2482463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ec2f53ca75e2f3eabae7caaf1c91a3e890bc5d26e3c2e5f11bd3d0228e7f6eb. 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/US83Z2480094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54cd71b381e2bc9767b7f7e804e532cfc6ca4319ee08d124f8bf7b98751c9f37. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/US83Z2499799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf286f89be5ba3cd4c9d3b9a3054ce7d3ae6e564e6e14da3b791144711cfedc2. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/US83Z2401852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8afcfc983a0a18d023202e6adfc7ba91ecd09b240fd7901995cdc6aa8f3c8ffe. 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/US83Z2320530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdf39422e7e9522cdd195a3039f9ee2579ce7b4533e1f11aa18d1c4e871292cd. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/US83Z2401854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ad8b70022eb2e93d540875b15def1fa5ae80b5f169fbe58bce6bc5fa599519c. 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/US83Z2401855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54cd71b381e2bc9767b7f7e804e532cfc6ca4319ee08d124f8bf7b98751c9f37. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/US83Z2499799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4456b4b3fb20972a1eaabda12851043c01ac3609328887a5794969505a220e6. 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/US83Z2401856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdf39422e7e9522cdd195a3039f9ee2579ce7b4533e1f11aa18d1c4e871292cd. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/US83Z2401854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12ca2e82bebf34967d845197442b03042d9187dde88eca63e7a4d35e1374a335. 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/NLE712400614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cbb66ebc95d84e65888dcdcd27ee3f506658e97c99e7da64872d010629de549. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:23:39Z), 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/NLE712500194.
Schneeweiss 14: Presented by Oliver Koletzki
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fa182e7a46f39531f0facbbc5f765d5981cb26efe6157bb8cb7487a079e79b0. 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/DEXO32235896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bb6396a3b581febaa8a5c88c1571cd723c5e2389ea563fd9a09d30efde71eac. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/NLD682301711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2010fec929b1efd726f09c3349310a1c4a2531c4eeb2a894889f5ae45ff1efd2. 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/FR59R1753685.