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 0x32bb33b1b0aece0865c427d5a6f8e45f64aad98fe63941516c319904e167dcd7. Chain 2 (Bitcoin): anchored in block 953885 (2026-06-16T04:12:47Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0b54d724-a1e9-4e7d-b6e3-cee665835346.json and https://artists.proofprofile.net/proofs/artist/0b54d724-a1e9-4e7d-b6e3-cee665835346.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 0x3840a31881e22c3378e1f94ce59164db1f10ebe1dd917f6fee1625af3905bb97. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/FIBAR2300535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63945850c35bf5083b6b52eb16cc5c41f96d06f342a975485ec9e0cd3df045e7. 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/FIBAR2300536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fefab3d27341c348b848be68840323286570a698a7b535ca29045f3300f2b08. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FIBAR2300435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2efdedb0493e6b574931c8a725f3aaa1bbdbbb68b1f75f955624018b0bc1f8c6. 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/FIBAR2300093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa05083aa9d647fa0ea2d7b9b52f9248a4efa6dc43534f78ce43fa7f449898836. 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/FIBAR2300537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x607ecf0620001ec4cb38b7ee4e5e0ddf3f8261251e90ba3c2faf17000165e83e. 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/FIBAR2200076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x596b60c0b6c0d383c9bb1d523535f9cd37629f27d925268bc1ec566b94968152. 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/FIBAR2200186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd94aa4c11dce370b223d5e36dfaabf259aae1d67f9476dadc88d20fb84804512. 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/FIBAR2300538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c6ad4ec01fee29c6a322393ba3c1eab69a289c5b77f96a87d9a45943ce402ff. 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/FIBAR2300539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44c9b138a7bbc3eb35047a43f5f6d7ad71e1b7ed9a0ca4d174833aadcbae1b8a. 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/FIBAR2300540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25d94ea9dc9e1841599b6007b0846c933a9cb564c1c29cfe21840dc75a354781. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/FIBAR2300541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa86609f9fe930827e3cb9c13f87743a7c574bb0208de29d20d74bfeb876558ba. 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/FIBAR2300542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e1ba5deb93948fa7462c404d0e3a48eb52a6046965dedec8c783999163c70bc. 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/FIBAR2300543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdf9efbd7dfe796f3b8bda9fc4336c92760aead8aad3975f2886aa6088363211. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/QZMEQ2253121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6af8758db92a7880748fe0f05c053f24f4fb657e9984f15b9ab494323d518621. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/QZRP52181640.
Pikanäpuamet (Lühifilmi "Pikanäpuamet" soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a604c0cadb5b35e8d5afdf97d784171293e8da4f49993a4708c57b64fb55f1e. 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/QZNWZ2479019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd922581c7b75af2e535fc88a5aa786a4536f370c3a24198181587ac570039ad7. 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/QZHN32064040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x483320dec5c290d6376e814a087754d1a15d4912f35abd12f1b1058c92857bb8. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZDA82107738.