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 0x92df0ee2f43b06b9819c95468cdfd3e1ea66b70f13edb15fcfd406cfa036779b. 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/4e96dd14-893f-461c-8e98-0d1794439086.json and https://artists.proofprofile.net/proofs/artist/4e96dd14-893f-461c-8e98-0d1794439086.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 0x6a13434eff56edf974303400628b9fded047e733748189518d471e600ccac1a1. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/FR2X41997412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11bda709801359af6df36541d70fb0eab196887f4205ca2877f58eca954bedcf. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/FR2X41997415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b05bc7b9a827e4356e3d4e4beaa250863a32ee85024167ed1d3baeb449fedb0. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:50:59Z), 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/FR2X41997419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x765171fa7b40338c19d462a89ebe4f34f81ef50117b23a4f745983182cceca05. 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/FR2X41997421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e78cd7f5892d56a7cc3c28466e244d66cca4e93b11d94f1aa874a3ee377a062. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:26:24Z), 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/FR2X41997442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0a4dc3bf433336c139768dd479261caafe4f93dfb48463ef5140243942c8d23. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/TR3111000071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb5acd08a69f5569de9cef76b06bd0c2bcd6238410053b4854395fc66fa3a744. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/TR0331309584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f7a0268e041025fbf182a4224d7a2031e0a2bbe779f8156ee31605a177a36e6. Chain 2 (Bitcoin): anchored in block 957653 (2026-07-12T04:35:02Z), 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/TR0331309585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94546c509e36c4a71f6793fb8e08a9ec4304e742062c7ba87f653c014152f5c3. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/TR0331309586.
Herire (Ji Versîyona Kemanan Strings Reimagined Yaylılarla Yeniden)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0442a1388d8b1fe65b68a24cfbac561c75672812bade3c22764126f23b161696. 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/FR59R1820552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21c2fab16e73ffa0a87b2ccf847ff2bca6d33f7c84e4bcc26ac132c27e9b31fa. 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/TR0331610747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb24cae448d42df1105b8f2b785d33a9b9f9e585401b63b2253080162f05df3d. 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/QZWFS2419646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe57efda3fb2b1401778afc9907db2f57f7bb46ab59936d5b7b51a7ced3a1af79. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/TRACC1500216.
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 0x50560410931c5515c76bb77dab82b5977661e254e5e3d3e2f5c1a662f64a8d47. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/DEXD61800161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e2cf2bcfd57dd9a763018946c991feeff27cb6f27ee1f7d97e2736931ab0c8b. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/TR0281004202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40750577073e80fa54a69e379017f54cecefc9040181f701c640c07239d6ed57. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/TR0390640008.