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 0x5704ff090fd943f769381e90253bac760e88721b731cf6314c4a7a9234443651. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6981a78f-d7aa-4850-bd38-d9cfa15ce0ce.json and https://artists.proofprofile.net/proofs/artist/6981a78f-d7aa-4850-bd38-d9cfa15ce0ce.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Ei hassumpaa (Tässä tulee Risto Räppääjä)
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 0xf19c2fe56efec38b49785abea2035a1c235bcacb02c2071ea620f3405d4d62ec. 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/FIVLM0200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8efa63200518c5aa341612b794b5a89884b094275dfe09150265d5990eabd1ec. 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/FIVLM0200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf08c6fa5168253944d20318718f53eb827977b108c66b51afb65d176ccaf0a13. 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/FIVLM0200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7d8988152c49339c3be3084f34ea0b11ba848b675a4be158ced67cb158c6ed9. 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/FIVLM0200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c3be3f43b3f80195debb98acd238685e16989e9e6675cc8ff242d3237b90e49. 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/FIVLM0200015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b502097637b5e2bf0bd4f80d244caaa71bdf666d590b6656f4a12e1b9207152. 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/FIVLM0200016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1156023a9266d3b1a8d4476cba41d00d3b48f87fb5d38e683eb32b892a07db77. 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/FIVLM0200017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf51c72c0881f025b196eedc71743adff7443e5847bc77b7f0ad63f98ad0e1106. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/FIVLM0200018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a5ba90cf9fc60b9f21bdad206910e538d5a28d0bf53afcd66e65d4a13b044bf. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/FIVLM0200019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e6993d1648f6651b0349b0ee57f26edbd982247bfd538a5e7f3824a2dbeb0bb. 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/FIVLM0200020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b4a217688ba1fe12b9718a8b4262c4a76139405d2a906e82aac9b206542c979. 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/FIVLM0200021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22d4b71af67b98dfce17ee48371a632cef4e254e2fc372c57a9b4a814ff1253b. 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/FIVLM0200022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bcd3e642aae86a161fdccc38370d0dc5498c738f37c3ecb61f4dc9a60a2deb1. 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/FIVLM0200023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7210758df802391ab3200689119c989b9e547d77f3971f130d4304f2eedf99c2. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/FIVLM0200024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb61efb8d1dfb22c22ca604ec2a87851bac05bbc13031ba84a3c24354e12d3e88. 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/FIVLM0200025.