thumb|upright=1.2|Promotional photo of the band Suburban Tribe was a Finnish alternative rock/metal band. The band is notable for containing the members of two of Finland's best known thrash metal ba
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 0xc83aa804a6582e98f8076331cdee92d4237fcdfc77b5847f86595625b7785f59. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c76981a1-f878-4473-8014-62280995272b.json and https://artists.proofprofile.net/proofs/artist/c76981a1-f878-4473-8014-62280995272b.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 0x86ee30aa8ef3216214e3c7b5e484595b3151cff06ea26f9a77d35f25f32baa29. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/FIZGN9700014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x296d11bafd2a70d14cc6f2f8771951a6e7d2c6f819c7150d8d4b9b81af86dda4. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T16:56:30Z), 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/FIEFP0100053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9314caaf58e29ebe9d1141a65ce6056aae8a8476053d15f7addcc7a814a6c2f. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/FIEFP0300038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3df90c20eb5b098879697d48277455fa6ef69b905875e887379e6152bedb78ae. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:52:01Z), 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/FIEFP0600003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13737048bd86152a1ad6c35b047cfabb5991eba0bbf327ddfd952f5453d617e3. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FICOB1000014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0a565a03b3d1bc4920350716f35793043476443b761080b14a6197e681db7a5. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/FIEFP0100057.