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 0x0a329e36c1a2bf8f6b19384d333d9dd9bb8a4a09e2a6e1b72965b24d9ac2554f. 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/aa0e8c9a-6caf-4c13-9469-bf50a42e2489.json and https://artists.proofprofile.net/proofs/artist/aa0e8c9a-6caf-4c13-9469-bf50a42e2489.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 0x191008a3b3830c0dcb11443a6579d3a5cbd2d6d29cb255600a2bde2506d511a3. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/DEKC71213830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0807937d68083e98fb07d36199893da3e4756159a3ff93704ac5e2b27aa2715a. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/DEUM71600976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4633ddd6c97fe05ed818be4f74e66b4d2330d72b37004c8767f0fd7dd6721f92. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T21:23:21Z), 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/DEUM71600984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57b47254d328b174593e741c271602d9bf33ce53dcc687172451d2ac8022391c. Chain 2 (Bitcoin): anchored in block 958495 (2026-07-18T04:39:02Z), 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/DEUM71600980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb55bb9a78db7a7701f5e880664b9489039fa5bd3d6bb961cf30cf1d467c083f2. 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/DEUM71600981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cd7bd76b2f6fbe30b8f0dbdc33c70f645aa6ebc3e55f537228ed3fc91d3c6a0. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/DEUM71600982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbabc3da99033ba3ab46eb298a3864a38afe40474081a4f01ee34cd8e30bd0b58. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DEUM71600979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8671d48c994e090cfe4d2ee34b8d92ebb8d60994773fb77fb7f69938bc370a8f. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DEUM71600983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf35e195b028acd2b9365acc49eb1bc42646e8ff93e382c1a44b5c9a7e829b67c. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/DEUM71600986.
Mein Herz schlägt für dich (Instrumental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbb4505f52ec43a18fd943cce8e8e88d31e98a4dbb742b97f332b041bdc4d030. Chain 2 (Bitcoin): anchored in block 958731 (2026-07-19T12:35:36Z), 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/DEXO31954672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74b264dd55b9a9c1137760b6bb38e1ddc4bee8dbda3648b82fb55633d0c1d751. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/DEXO81924150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f429d981654969eb3319727e54829109b3921b67d3981af8bca9b17ef22eeff. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T05:43:55Z), 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/USZXT2557487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x584d94bddf2d0d0b387463db52d63bab369d58a61bfcc49404ffef76ef73bfa7. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/DECE72301928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b05cbb8323dfb5174570cdebeeeb84b205e4c6868eb7fd6605eb67aecce36f9. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/DERA12200001.