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 0xc2d661db0946662962a37ad1c9c7edb7e2192263330a973c9760e9e2f8f67aed. 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/6f13046c-6b39-4b8c-9474-4001a53265f1.json and https://artists.proofprofile.net/proofs/artist/6f13046c-6b39-4b8c-9474-4001a53265f1.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 0xda62d58244e3ff3a61a46c12995b8a92575154bdd520a9e3c1e81625c225a6c1. 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/QM3DF2160679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9103ee1912506fa7e290489deec297b0f5d51dd907a0fc4413f60176e25dab5. 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/BR7552200105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc33fb4abbe6a3318df41606aea8fcb2d2a1aed9d996aa39387063ea2bdc1ed4a. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/QZNJV2395017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51f1dcf095fb6c0c823a3f4de086c05ea5c44d35f15fa036b1115295376cd9b5. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/BR7552300132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18e82b9522f8f2e46b8b23c8284106e7a237165970e0e8a396925b074795c7a2. 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/QZW9M2437878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56a4da8d7b18a6baba5be6e2cac860c189ef75828023e728a5c1118262b755eb. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZGLM2561847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0caa14c291ff1127c79690273c1a13e18ff3c088328f6d53cad8d4f7b796c011. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZNJV2557605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ead878ec762142fad2dbca0b820ff7dfca99fc4be8ecf96d4c384d30bc7d93e. 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/BR7552500017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4f47dd2f6bd36088f7c4847faf07a6c70663ef13aaa3d5e15eb90cbb7f13f59. 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/QZGLS2356195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf137172a2f598a73f39263e8f07b9cb2dd68b5ac096bc2ac55bad380ba7bfd45. 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/US7VG2238443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7daf12fd2673d6e35da16ba1cdab439f31279b319b461d9f4cbb7eae15db398d. 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/QM3DF2198745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde2c4f7df5153e91ccf062929a2e3468beb490d1581d07981f053770e835a04f. 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/BR7552100082.
Ide e Pregai o Evangelho 7 (Edição Especial)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51c70634b842115015091edbf0874097f7918a07e7c23cda829d3265cb0680ed. 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/BR7552400133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25c2aa7e9c38f1c50273332e03e09b3bc79dc7c91003b46fe1807c15ca3f9998. 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/BR7552200116.