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 0x2b8cb436fa6395028143182e8cae5587c18dfccee44222c5742dbfa0957fcb11. 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/30363875-78b8-40bc-8f88-9971da44b6bd.json and https://artists.proofprofile.net/proofs/artist/30363875-78b8-40bc-8f88-9971da44b6bd.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 0xce33e318d052b21e455e265a41236eea3aeafbffa9fcc2114bf5572fb54d8800. 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/USWH19201007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18806f1f16100f808d9cc106c16ce602814443ee5e52599e8f510e7baba49257. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/NOBBP5802030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7b593e2c1c0800404dfed280eb58033de10400d1b0b3bbd7fabbc416015a11d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NOBBP5802090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf002b17ed16b55e62f5a97b3e79677e14054bbd7119a295223bb4520590b250. 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/USWH19301165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf092569d49e377869bb74b5c25e37374d1ab1cfa6cf63630286372d51982c28. 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/USWH19301171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e80080be359623d072cadddc7965cbd8799c2e5e08660f559337509576bcf3b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USWH19301173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27a12521db745740e970f3d0126d9124e75f664fc09a4a947cade375cd7da0ef. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/USWH19301014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1d99cd2790fc468bf57277b8bcc2b11af3963ba0d0674b9406f1a9fb3f624d5. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USWH19301168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf2a9644c72beb4a6e1574e6e621281cbe4195f12f34b1e2433bad633e7a52d4. 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/USWH19401227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1eae5f41629f6fe6283090a69dcb0c197c0b3018fbb0907744f50d135c770ee. 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/USWH19301001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0ea93982f74e146f04c020d2199938cf9e87c6248e528ae92277153d66a6c94. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/USAKS0500962.
My Heart Is Always Moving (Mitt Hjerte Alltid Vanker)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaab3b633ebc8bb791929820ebba3545f631ebe6697f2b66e7021e101e60c199d. 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/USWH19501121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23a3367131b92186241ff7cb07e54ff77a2fbbe3d9cc78592a159a4fb208e79d. 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/USWH19301178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8275e680297f1a15287c49f841c048e1e87963e6f979c4923032a58d14cfb0c3. 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/USWH19301175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d4ee0e1461c4533c24bfebd9eae51b4cddbf00df549220b5eeb00ce3b5dfb70. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/USWH19401013.