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 0xba426e16b1454428c78090522443ff35add1204f337f2de5e6ed6d70f0726101. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ab5f1b38-d935-4786-891a-b9b82fef0cbc.json and https://artists.proofprofile.net/proofs/artist/ab5f1b38-d935-4786-891a-b9b82fef0cbc.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 0x01f5bb8da5d70b6087ff88043d018a96b32297d290e5e069e5eda067005444f1. 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/TCADU1885531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc76230be8acb12fd5915849c9fb3055ce40b31e972c9b97ed30242a8d57ecfb. 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/TCADU1885533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0ca52972eafa15a94d21b597badad6692c14ebdad005a0d391e52cda818e0dc. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/TCADU1885536.
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 0x8631c89362c74470cefd7f08966d06085e928cee34fdd279277421b5339cea2e. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/TCADU1885545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cb6ca7bc4c12d134d99a7ba2bf65cc3c9612717b7b2ae045a0f223ee6501c41. 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/TCADU1885548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb557b29748dcb36956e104f28ced5183ae813d674f902667bead0a4274f59dd8. 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/TCADU1885566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91ca023de90786b9af81be3374e588faac72efd4800abf77eb0b41ecbbc5869b. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/TCADU1886253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x140e211972bc8572abc3b96f0096329952af44f68193c0e930000d90f669f494. 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/USHM91315187.
Sax Fifth Ave Flow (Gas-Lab Remix) [feat. Williz Freeman]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86023497a0f9999ff23a681b560ebd817396c6a5aa6aec00fbe822c0d4771c3b. 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/USHM91315188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc89ba7341aa51f7ab57763ad01dff74c094997a12a659b08cf5fae417da06576. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USHM91315189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d1ab23ea20e67873d741e87fb3ce946f6a07ccbb49ce639423b1d9d37e98937. 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/USHM91315190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x224803886bd95ae9587ee4acaf370bb3e73c65ebadc9c0c8fc0d37d1aed81a39. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USHM91315194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4500fb9c013b3e81f7d9c0abbeef912a20a151282ef858c4b571649dec1e640b. Chain 2 (Bitcoin): anchored in block 960166 (2026-07-29T23:39:29Z), 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/USHM91315191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdae905d7f19d10b2a604c117a1ef6630704882c877a813e6ce7c1cf5655c1743. 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/USHM91315192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda7cfd548c32a4cac63348b1dec22dbb342224d8f7cd256f47d2f5b80d5195e7. Chain 2 (Bitcoin): anchored in block 960241 (2026-07-30T09:58:01Z), 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/USHM91315193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60499106c93ca6c04825def3dd5509464fe184300aaee52cd79eb12982275e76. 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/USQY51238414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1090aa8661cb3420930fe6097db92d047e0eb030cb632b7d16c4600bbcb97553. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/TCACY1729198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1519fc8a9bbb1cb1f3321bae3fb1707246f5de5788db61460d0ef64751475ee5. 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/TCACY1729212.
Aca Te Espero (feat. S.P.a.D.E & Sol Liebeskind)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa433983730e488c7d2dd8425d603eb578de0ac8fac6a3069a4c93605bdf1449a. 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/TCACY1733818.
Paradise Slum (feat. Ray Yung & Hector Mario)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9bf6cb35176f2447ce2fff0c48b2b62a267d9905c46823fe1c602db8f70115f. 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/TCACY1733894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea625df1c43f6b85af1fd3cf9c7af5f7274ac4a725ef5ce73d69d11a555080af. 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/TCACY1733913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x148532bca0a1a1729c15b42669172972753b30730168748fae1e14eee584da7d. 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/TCACY1734422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc797f1835204d709df982aeeeb7ea9db1835d47f5b0a76bbb5f0eca2e56fe915. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZK6M2449593.
Hip Hop italiano: Old School New School, Vol. 3 (Passato e presente dell'Hip Hop in Italia)