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 0x5526ba604c85014902cf5ee2e6de94321de7f71cc0fc2733ee790da8dc845a34. Chain 2 (Bitcoin): anchored in block 954549 (2026-06-20T10:56:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ab125623-0f7a-4405-b6b1-0ce0029c3a74.json and https://artists.proofprofile.net/proofs/artist/ab125623-0f7a-4405-b6b1-0ce0029c3a74.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 0x1cebe8200485fe83ee353c14f0d469a80b1c6abe295a95469c4ce29fe4225dda. 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/QZW9K2311307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x316e636e8a4242ed20b5c6e7cf080cfe010a6b78bbe4d244b065ecc41bf92f10. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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/QZTVM2303441.
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 0x3862a5e2d4f15debd21b72fec5dfe844dd86f0340c84d804128dd85780faa1fe. 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/QZW9K2311308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e6e33b4859297f9953ed2200e83492e4a304cbbf0a3e1025b80644a5e8e32dd. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/QZW9K2311309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4d74617fa880467e7afa7ab04766820564555f104d27243e9689b8428057f93. 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/QZW9N2215724.
Intro + Viciado / Palosa / Ele Gosta de Travesti / Sacode / 100S2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e68b606472729cb4263be23fc6cefc1849c4508cf41797a5ab5e132c692c573. 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/QZHZ52266485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa38295222398070a2f259d3755dd0b5adb62ae8d0ca495263dcf5fe936549997. 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/BR3NM2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbba5933a18a2fbae3aaf312e859e459faf4cd9bcc7bbcff7ce8a909174c18a6e. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/BX75Y2400182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x208fac8283354c271b34832fd55be629ba41bfe4261f736991ed422df3115fd0. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BX75Y2300132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11097bd8869fbee24c018bf06c4860920561fa814f1c7ba2a8bade13e81ae737. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BX75Y2400160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6968b8a727fffc370754884ada9e9b652b23ab85a8391031e8584d66e27b5a8. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/BX75Y2400176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x713003a7189488e13964d2afd76ebe000fb824c82293cf13af8d5ba13ec0ffe8. 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/BX75Y2400177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d8415adbdea097febb8583dc3a012018768dcdd2ed5ad0434a36bbfecb6091d. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/BX75Y2400178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd7ac84a7c1a8b35494dacb267c1925dc2e932e5e74c37d6e40351f53b552048. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BX75Y2400179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74729749179b602e69a17b92878039018f8ae7673625f769bc36e87aa4c4c967. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/BX75Y2400143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc6110a6fa7984c05ea1ac21a3ce6720d858be6fb5d51e09ac3801952ed483bc. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZNJV2544366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dbaf30fa46c9861c15ed2f20d83bc8ce1d99b8d38980990a2f8bd91df917cea. 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/QZMZ92515299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24a845f69b995a653b8c1a48d1f6b08b6bb6c00018401d428990a1492ccdb2da. 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/QZTVM2463243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca7365ab9e19b97977f59e57e2f6a3393801d546cde53356ec02c14e43791b92. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BCLOQ2200017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe67132af12c3db397443f4d17f16d611f8f6df57830c2e3c69e5cfe27231e08f. 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/BCLOQ2200018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dff9ee52509de3cbb0220b5ce2937a42305103f744205575a91aafb6bee32b5. 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/BCLOQ2200020.