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 0x00def2cd653f2d3952ec5a3176eb16e7963e7e45fdd1cf2ce3030219f578f48f. 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/9f826289-0cc6-45aa-bc73-644b0a6a575e.json and https://artists.proofprofile.net/proofs/artist/9f826289-0cc6-45aa-bc73-644b0a6a575e.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 0x6cc83eca7f26fd46c3daf65a5510c7a6593d2868bf5e6eee0c06439362080c34. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/BCHFD2100045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d7902992470aeab175628fb3b87a2af830512821ee8eb6039da916e999f64e8. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BKARF2300026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec57127357427a742add697f8059cde4d9d61ac8720c7a57e42bc023fc273495. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/QZGLM2374934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b62236ac7af2dbfc11b6613324eb84258561d167909eef98465c98d70c93304. 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/QZZ8B2343063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e1673d26428e965d875bb1b935318d9822d458aa8b5d1b8156dcb6415f07737. 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/BRSVB2504975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbeab5828010ca610c5ddeec526f214d303db42909ba92aee6028bc63ac6704d. 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/QZZ8A2451831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72557886680ede3f34c2948e4368f7997cc864594ecc9a5fbbd912283eaba377. 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/QZWDD2538604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8bdac0dd57d1b8fc53236bd98f6f9e0bccbfc58e8fdd2bc27601656e33891b4. 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/BC8182500051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9c94770567ebc32aaa328d90831ea36fd5624f10f5e03deb3a8b3e0390279ee. 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/QZZEC2468984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42e5f0458e07ce3b65de6f3f42dc4a6c5af14ffe608c942764d344bd76970c3c. 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/QZ5FN2586294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10fb4ebf3108a3a2ddf32e9fb44ae66d0051ea23a4c552379d09a690654632ad. 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/QZZ8A2432925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x981beae566ffb6c8c8409757dccf31edad6fa7017ed030527183939d54477886. 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/BKJH72400079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc89bfc4b38b5c9008eebdf6d8fc8914c645f6ca60ddc840d2df7fccb97cbd172. 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/QZNJW2441068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb02365df950d5be113273ca533f5942bbe13f947044df99cc4ba2ca5a78c88eb. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:15:21Z), 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/BK44T2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12098aa75053ced57f7bf00de6d2811ae013a645fa7be77524f0f228c7189e98. 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/BCNWM2400016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x357236aecf417b647d174319653f32ef5e8ca58b182f51601aeedd9339378c1e. 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/BC8DD2200170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x608aa2554935c621bd49bf8592359cd5997e08ac229707caa46353e9c1720276. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZZEB2398695.
Hobby das Safadas x Vai Ser No Beco Do Alto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97b8808558f17fe1d81914a070d6b5ab346a601ac0a64e033314c566d955f120. 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/QZZEB2330209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f59c2540b868428fcacb383e773ade0284a304ae1a102e7e5572bd902661f24. 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/BCNWM2100121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85bac281968be353b9661b525398524dcff3a7b85e9c7880910307f4b2bea36f. 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/BCNWM2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ccc582263e4c19efdfc37cca7eeab1c170b0cca1509fbf3e07b330d0aa4a2cd. 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/BK44T2400016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb05b757f9efbf927509df4021d4987b5e2f4e09e4f43e53619497f50e0121415. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/QZZ8A2367177.
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 0x79e92174ec131110cd54ebe76fb183241cb9dfdb6a29b69f4463ddb6412b4ea0. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/BKBBL2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa29e6026816d84cd40975ebc15fc144e22b019466ad0ffa4bcac145e5ec9899a. 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/BK44T2400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea06eab521e1d06e7b164249ffe62d0306931d7a36c1a5a584ae0d2569a17a10. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/BKARF2300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82bce898dd16b6a6953894330969db1691253c298bbae1a02f30f83d41460f7e. 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/QZHZ32106578.