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 0x0027ac0edcdfaf6bd10dbc46b47f3acea063421519b50119e434aba8f73bbdc1. Chain 2 (Bitcoin): anchored in block 953724 (2026-06-15T01:43:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8cb46866-c57e-4460-b673-60f9a69c52ab.json and https://artists.proofprofile.net/proofs/artist/8cb46866-c57e-4460-b673-60f9a69c52ab.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 0x75f0dd4a092b275adbeef2eb30083e80f8239bde9391da177dc6837a81405b31. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CLEE21102671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2f867188215778087b92085243636b0b49692d3d3721a35ffaea1fd1600178e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/CLEE21102672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b13c6bdbb1f7cd394c740e107851750acc55d3e8ce37f70a894c2dff798033a. 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/CLEE21102673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84afbab79b11376c3d8c7a8d0d4e2c3b66911d82e2da76339493ae0aa61424d6. 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/CLEE21102674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6fe6aeb841494145514e464deac703f7fd51b0cd5a75f74dad5f30764ca8eeb. 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/CLEE21102675.
Un Poquito De Ti (feat. Movimiento Original)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd524af04696acc418dfbb272057b04e913d58c789d584582839fe1a176799ea0. 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/CLEE21102676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5665ca5ac6e8647718c3c801145d56dcdebe46914698ca422e162166f710ca4b. 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/CLEE21102677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bc6086a381feceb21a43172fd7b3dd4755d6a2c1d5c2df67221e313e99da96a. 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/CLEE21102678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2671e5afee333a5339eadbe1b25a07c569041bc3961a3cf8fdeee6cfef00a721. 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/CLEE21102679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0974bfebcf484efa12b1cb68895bba60c589077a4ad5ad8b4fe2031f6c33f6e8. 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/CLEE21102680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78d04ac19b9cf904f46127ad1968a13552eb957434ff4491aacf8a5b73636d1b. 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/CLEE21102681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8151aa68ef5055af2f46d9e40330574b1d1586d1f72a014ecf2b9b33dbf4dab. 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/CLEE21102685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcccad20a8da22bcfe4efb99dcff03a2cb286f9be535025ee728928a050d934b. 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/CLEE21102687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x584d32d14e3e596be8d812b443186e98fefe1d98421010e775f3eb8236ed63d8. 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/CLEE21102688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x640d9447b31af56e31904a535068321e00720f8fd7204d101e09c5b56db8f5b8. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/CLEE21102689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18cd7f5ecb882a0f05ec91c486b3a983f2a7ee140dcd674cc27dd6f6774d0253. 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/CLEE21102690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x236f6db58b221d0fd562c13486f548abd49cd9bb63dfd3a7f7864aa071991ccc. 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/USCGH1731810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e375c2afa3b3a98766db87af6b96ac0d3463f5925ea2b2e3f6b3f49208c2af4. 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/USCGH1731811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x778e8c5df420f12800d9e51eb89694d09c50c0045febae31e970ad8251d30b40. 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/USCGH1731812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87f7c82d84c433585a2fccde3a76e0fbe7224a81bbe4a51c06d91064ac82f11d. 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/USCGH1731814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa69201a2315bb8b7b61113cb05d9153781b8ff08a14c25a79982c104969fee76. 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/USCGH1731815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccf1e28c1c32103ca6c7819ae7388892bf7b94f0db792285e6457a85ca80ba54. 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/USCGH1731816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84908f08b165c78f9baa7e3a23bfa14f1b79743b765862b29b5d8615d2ac1f66. 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/USCGH1731817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb30d69d6a54654d8b8b3a8802532b9cfc0297a0910a6fef14e7f5a7db192874. 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/USCGH1731818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x312115c1a3f738aa93acafc735af7311e1ead44b98b94d78431dd77abe8e16f5. 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/USCGH1731819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf78d3a88fb3f2ba6bc6a69daeebfd4f97619582e29b3c76de094c1974b754d3. 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/USCGH1731813.
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 0xb087fcaed230c5b740bae306b39c558f32132206eb34de5a53b6b7819cb710f9. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/USCGH1731820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e042e875085100edb184733f8a366fd54cbdd52501676c33d5532a6372877b1. 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/QZNJZ2313489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0523e63a63ca29fafca6c044af8c39f7a183a7df22e4eb118f5cf9434c037c4b. 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/QZK6H2083017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03df7ea68176f9d999f52cbce09ae3161a2f6c8597e98b599d295a9ff4bad538. 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/QZK6H2083018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefed87a67663028f578c3a30a40571a0b63c1857ab13c789723997e6e70f6bdb. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZK6H2083019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeadd5462e18c57efc0a3c33df7d9b2a45edb053eb887e2f2575f59a78362ea93. 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/QZK6H2083020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x792489e1e18790b1a730c6219966f3d036f55219ca8b176f3bcd7fb46fbbf8b7. 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/QZK6H2083022.