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 0xf9c89d20d354295bb04134301c14d6a5e52083d57702421c778c5ca849254443. 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/8b871c72-ad77-4b74-b247-6bf36dec5ccb.json and https://artists.proofprofile.net/proofs/artist/8b871c72-ad77-4b74-b247-6bf36dec5ccb.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 0xc1fdd3111d3b221089938bf27de4bc323239033d49c1ececf675edea9fb84b9d. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/US7VG1635860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x380cf4293f40ce761397ed8ea73a553a181d2bc2ff6c43c0504d54633d67eaa5. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:06:08Z), 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/US7VG1635861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ff0bf2440f0856d49e167713ff581a2d814f812ac3fcbb6484954052001a5d4. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:08:28Z), 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/BX0SO1800114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd423a5478d4d4d7a5310cbe5b458bbc56ec4034065e54c0fb52f6d4dc2cc5a71. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/BX0SO1800100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x760d636b928439646a94f7d1cb2da3f8c89f348c0c48a39a9e7f52433d3d85c3. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/BX0SO1800359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x186bea1a108a08450fa0fac8cc9491d26d2185bc5d030ae449b8dc4b10c58a68. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/BX81V2000521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x582544151a3872a3c2e0e0ee83a50eba98bf446a933db91cc5d5b660258e727a. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZNJX2291796.
Vida Loka Também Ama / Sequência de Sucessos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x154e0179247efe7c7086ddfab503e2e00a8f794e8afe9fe740a4c62a6697748d. 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/QZNJY2553288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d42020d6111b8c874dbc02c4684eea87013a3f5b090e26c4a65006971e0a574. 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/QZNJX2140505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa09b50c59a750beee2d8f7fffc440a7a05b3dd76e867c03187ea4d99ed733b0b. 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/QZW9M2411444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x331d546b9dd0e2967a8d0b9b897d4b6ec5554ce0d818b19359da643160930064. 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/BRKO12400915.
Mente Milionária (feat. Mc Tiago VS & MC Kbça)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe13ed33a701165f3753fe423a21b53eab51165789a089f65d62fb80d13223e4e. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/BKNFA2400005.
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 0xb06984c296ee4f407e37e3c3e9822fe565e64764211503e2a0d1b1ccae981079. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/BKKWW2400016.