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 0x3f799e5cede66e8fef191a3d7ba6ffceacc6de38cfa0675d888384287215637a. 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/21cf689a-0151-4fe6-b7eb-1fd8b2d2e0b3.json and https://artists.proofprofile.net/proofs/artist/21cf689a-0151-4fe6-b7eb-1fd8b2d2e0b3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Samba de Roda Nega Duda - Tem Recôncavo em SP
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 0xc9909ee966ad14b5bbf5f095d6d7a0edd08fd3eef1abdecf76a0b6f7c7fb7ce1. 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/BRTRB1990845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94b7a6c899a7b22b329386a3abaf210663384a65b2a095f1aef361508f5c26f8. Chain 2 (Bitcoin): anchored in block 957564 (2026-07-11T12:19:47Z), 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/BRTRB1990846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44964334e6db7d0801216d94385171a9331731c070e5f2a9d27823e6c9508840. 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/BRTRB1990847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8df081f2f6f6ff8ccc9cc7956050fde0e262c240cba698a2e347bb5e15663b50. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:48:48Z), 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/BRTRB1990850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1e635e28b97e05ab9b155d9efe7361df0fbb80a84d65139ee8c5a29c79149de. 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/BRTRB1990851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e38bbe35382db540ced2d2b9a3fc41e030993b0f57ca7ab6b5df25805e1c77c. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/BRTRB1990854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71bdb318754c9abc3c0527d7bc797dd5842ad73ec9b570d84b2e1279c7328de7. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/BRTRB1990857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7b677aa22642f35ea5c6c78b40dd39b9b645505a717504fdf1a534fa8b85569. 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/BRTRB1990865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5782178022584a484b0247f9080e729b40fcb8db1bee4e26281fe7536bf962ad. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/BRTRB1990867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2983f6fa9c2cb1c98ff09aea8e38210980a661a08dfbd3fcdb7797c685c92dfb. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/BRTRB1990868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ee054eff165f21d000c3e7a316c6f8020878fcfcabd100dd8e85989fcae6399. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/BRTRB1990869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x875f54ad8c6496601f690e25d662b549418e551f3f1488d0811860a0df83fa3b. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/BRTRB1990871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a5d831c13901d2ac383eec1ce32cb437abdaa2d5bed04b90ecaecb76b1148b3. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/BRTRB1990872.
Eu Vim Aqui pra Te Ver, Saber da Sua Saúde
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bc9799d4ccf9b322ce103caf2bfe79174af6dce2d351a31a9252e21200fbfc7. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:55:54Z), 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/BRTRB1990873.
Estava Passeando Pelas Matas do Amazonas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f42330d6c955d25603fe1849d398cec283d2c0496d82c59fd255f1c4966606a. Chain 2 (Bitcoin): anchored in block 957564 (2026-07-11T12:19:47Z), 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/BRTRB1990877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6f4584a189a08a875369f77d3499740d2c0f45d395f4b6530f7de63a71ba91f. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:04:24Z), 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/BRTRB1990880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4ee5919c48b9cbd10dc73bf228e4efca1db55a76db6ad36619323cb1c06af9c. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T11:05:10Z), 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/BRTRB1990882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6da82f1dc2fccd61361ec7e7d8f512749aced8f2dc1b83d0d190f661da6a0f14. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/BRTRB1990883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb16f7203de81d44dc0c4784a6743331fad3af38b6a05abc702a5433a6661521e. 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/BXC7X2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a8b8bfa04a6f940dff8bf05148524b6f0962b3a64dbad6ef0fbdda493128d84. 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/BRFZA2000041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff5dba4c51e9068c187577a98c41faec9bb641b5b1941ae06d7b4b7737f8853d. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/BRTV52400010.
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 0x420f3f868f62741ae72e51e4e64008e379478325da65016144cc6836e46d7802. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/BRT2D2400039.