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 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 0xcb7d2346955b04006c39cf94be3cc50e3e29935a00718c7f828039c2a5f440ee. 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/eecff9ef-e945-41f3-8d38-ead514a80c14.json and https://artists.proofprofile.net/proofs/artist/eecff9ef-e945-41f3-8d38-ead514a80c14.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 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 0xcbf81a32044c4b609a92088b9026eee0578f375005e71a785ec350300d112e39. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QM6MZ1725119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x823af37a5bd81f31aed0616eb1eb79934d0eaa351e8d41337c057cae776fb1a8. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/QM6MZ1725122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1330d4712325c621f64f2c913b29e9d6e1d3d4e812ff744a2171bd06c11d6d95. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/QM6MZ1725123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x551f1c8700be350e1edde6012506183cb8413bc9027c57c925522dfe4d9b6de8. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QM6MZ1725126.
Yo Soy Puertorriqueño (feat. Olga Tañón)
Manolo Ramos live at Sesiones Desde La Loma
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a11ff1352414765b536558060631b9168e5e2b2b32379e7e677061533799d28. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZPQ32100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72675cf450271ad76906426d58e7862d48ff20a47b2c5b189388b4c905506f91. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZPQ32100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40efa9344b7e6cf4abccbac03cbee5ea2feb7100f72734e43157d1d164e91224. Chain 2 (Bitcoin): anchored in block 958731 (2026-07-19T12:35:36Z), 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/QZPQ32100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6994fa929987fb3cedf2659769a8f4f749bf6968bd5d9f2104d9ebef9a36a435. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QZPQ32100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5504d9214721548d680af200f1f606bcab002da8b8493f5731ee649539cfb56. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZPQ32100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb22bce47bccd6f4168521d7479066f4d14ca8292d147c4f9ee22af786b8e74d6. Chain 2 (Bitcoin): anchored in block 958422 (2026-07-17T13:35:31Z), 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/QZPQ32200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd97e062e325f442f809e80d82faef2d14572d53779e0de4ac7b29a2f42e730fe. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZPQ32300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c96ede12246af4aad20345282869dd6e7b2188325262fccfa057f7406acee7f. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZPQ32400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe029c0b7da2df604837b5beb75b36d406a64c7282389639aa6d76adc6945d5f4. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZPQ32400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbcc315b87f5de0770c8cd7fb17f741729c3aaac405dccdc139a140f3b4a4b4a. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/QZPQ32400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d375e2fa90f4d12f627db07598189490f59c86bc924731daaa36246540e68ff. 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/QZL432300067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f77a848e678f9cdfef5e30c5220c8dd6d139667fe5ee329014154a1ced85e02. 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/USASN2220770.