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 0x64f66c14bd0b0fc5e8a1efca0a7dcd98f7d4715997a46944bb257a53cf68ed65. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b6915c73-bd1a-484b-8787-3b9da29dec77.json and https://artists.proofprofile.net/proofs/artist/b6915c73-bd1a-484b-8787-3b9da29dec77.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Folha Seca / Eu Sou Seu Fã / Meu Ex Amor
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 0xd7eac96590132b19e33c102e71dbaf4b8096a5bffd1ff2e157f3adaceba08bea. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:34:20Z), 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/QZEQU2145818.
Essa Noite Foi Maravilhosa / Dodói por Seu Amor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87a5cb20fd5847b4b4f26d581b57cf1290f3314d892b8dab709e00d34e0aa3a8. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZEQU2145819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fc4c2a7bc9e8c705910764179c9a29106047d50f50d07ab40e0220f9d3ac40a. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/QZEQU2145824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaab4e98563a8dc95b306ed9833f4df6e5159b9b9523bd956b566be9de8abb539. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T18:18:42Z), 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/QZEQU2224296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x376d295e3980a28f86ef13ab98d711419c76e2c9116f6e9ad06a7192c457b211. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZEQU2224297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa93bbd6db4618449d6c86f6d19b8f1cdbc108d56c5f0a57251c46e4cd0d499ae. 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/ES25F2402625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4be2c00a1942ec594dad84e3964d5a3526d30c11bf40561d6ac88e64012bac71. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/ES25F2402626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ce31ad2ce061f2711c677037d062baa52d4957e24a12a3ea5e8090f8f61dbb3. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/ES25F2402627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbda209b9366bf93b66eee27f176daed58c3c9f6c9b66872a5c366592ccc0c571. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:21:10Z), 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/ES25F2402630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd51358fabef8576ce1aacc52e7c909ffc3a0439cca0c539aa740d706adf4f41. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/ES25F2402631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb160fdf1981b54207d92dc380eee2db8e953f0baeeae3e887309a5b5deeda1c. 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/ES25F2402632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb223fcf94cb9079a5db7f7a5456b55ffdd6d01384d872d5e5bb216606ec04773. 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/ES25F2402633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a4b57e9abd4cc5645904f50158bdde9ecc72e93fa2463684c6f5bf51219022e. 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/ES25F2402634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbe5dd8d29496379fef988e2a459e12d5b114f5dc147cb397d9798cad07003c4. 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/ES25F2402636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1de8e8de1aefd9f57674d6fef697db88f21bcbb3b77859db6b544551d1eccbff. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/BK4DA2514753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6285eddf7dd34a19ae17248e738cc17c49ed53aea7e23d996f87365aae22b81. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/BK4DA2514780.