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 0x7ac7a07e8fd918749148cb5cff831163856f29b3530b4079c82c2c6e2c009553. 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/31918a44-7991-43ce-9efb-a267f1672a95.json and https://artists.proofprofile.net/proofs/artist/31918a44-7991-43ce-9efb-a267f1672a95.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 0xbef8ae439554ae042e482455acd11c7cf0e92182d8a584e4abb6c37d1da45a2e. Chain 2 (Bitcoin): anchored in block 958988 (2026-07-21T09:08:06Z), 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/FR22F1900410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63bc3e535ae2d5e5aae38dcdcc9cb309570a735e87d05b331f6be45527545f75. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/FR22F1900400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4506464b89f6fc1ae5feab07252a7dd00d51821caa83cff35fee6f0fe4e1881f. Chain 2 (Bitcoin): anchored in block 958590 (2026-07-18T17:28:56Z), 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/FR22F2100150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd00c539bb4d4ba6f09f48bf0f67fc7bfc55a5fd6e3671065f9d9d0278b670931. 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/FR22F2100340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd00c539bb4d4ba6f09f48bf0f67fc7bfc55a5fd6e3671065f9d9d0278b670931. 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/FR22F2100340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa70523371b84943fc9295370fa5ba7867207e8a855b272a3f80c82cf96363849. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/FR22F2200210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8e70621dc5451895a094a246507cf8893ae77fe148d770fd858a7be06e63cce. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/FR22F2200240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73f30cfd8f49defda040792e3da060ca39d30590ed62c240707d16b35c5c6624. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/FREFW2400150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74ee6df4c20d403ab1caa5e8ad1840c135c16bcbb7e37b426953f6431a441c34. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/FR22F2500010.
Latina Fever, Vol. 3 : Reggaeton, Bachata, Salsa (Pure Caliente Latin Tracks)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7e34f651702e24df41077e40582968d1a33363df6971484d64a3b6a328d4a87. 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/FR22F1900130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8d8c8992c0f2debeb97e936825748552b52c1170b2011c36c1299dc048d8da7. 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/FR22F2200080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81e752e2a3da06fde12c5d81a1bc6975223d22e3688488e092d778e068ddba0b. 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/FR22F2200340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81e752e2a3da06fde12c5d81a1bc6975223d22e3688488e092d778e068ddba0b. 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/FR22F2200340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d76105c11c6d08e153b3d29ece8cd20468d74076a56bb8047e6001087c81fc7. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/FR22F2300060.