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 0xa99a78f6579a2055ecc18ba12e145899bb757f81160f37ab74c89dce54334d66. Chain 2 (Bitcoin): anchored in block 953710 (2026-06-14T23:32:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7fed20f7-14f2-4b49-b1c6-2899119d6f3b.json and https://artists.proofprofile.net/proofs/artist/7fed20f7-14f2-4b49-b1c6-2899119d6f3b.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 0x72f033928ce09e1a0404ea66c19c28572990e35b95ed4bb9454b2514b0b2e92d. 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/BRUD90800014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d93db239f3bfbcaa5f828aae921656ae994e837d6d0f635c01704e1f199f799. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/BRUD90800019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e77b270f26841eca5583042246bf316771edd50b11b2cf0026e5716659fe2f2. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/BRUD90800016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8478c7907b9788fa49964b3c41fcef3fbeceb39f07b33fbeb42a7ddad6081be6. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BRUD90800026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda1c30a57161259b5e22de3c8a7771b18616455500821f95936c06bbde7ba7c3. 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/BRUD90800020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x025069e2e2b926630b1e0fcfbfb70637e6075b0078e463c10d0cc161d68be601. 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/BRUD90800028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x592a982323450d033c296688bd0d826efa3cdd5b239a27af37ec9717e8875d5a. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/BRUD90800025.
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 0x3c6a2a340d8423a757e5e1327170fc9b76a3add4889a65f288a12b8c18e907ec. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/BRUD90800015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdc55aa08a467cbb78621b42c9657dca059c32693d0a604665b32a4aad48cbe4. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/BRUD90800017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61cf2a6ede5a9e722320d9172fd38938a61cb59665572fdfef0693b7f0cea6b7. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/BRUD90800021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0157ea822636ef0dcb271ed668469740f2de7e5a73e524fd016e62c07f80a24. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/BRUD90800023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d35cca944279723c1002c4ca98f71766114fd268c79ff05995aa02100eabe6a. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/BRUD90800022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04bacc89bbc6f9102658deb74f875a36715083b1d185496ebdb257f6c562f8b6. 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/BRUSA0500313.
M.M.M.A. (Movimento dos Maridos que Merecem Ter Amantes)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77160248a2d13cca135336a0362c95c187282a9dd798e75be88b1a89e43f90c7. 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/BRUSA0500315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35a3097718fdd1f118b7e2d57a86ab726e43d9b9067289ee48d00b2e4fbe610b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BRUSA0500303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26979e068ba035c6e19aaab38f9382dc5112c46e3822206475dd6b002ee7e9f0. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BRUSA0500317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd81a99925d2a3054b677c84ab04c44010603eee8363f58c19fc21d41a3f5d112. 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/BRUSA7800319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee2e5452093a9d79eca98192e932b1da1447b62e3de2abed2960ef2c5dfa4ba6. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BRUSA0500322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9606d9eb5677601e57ba53675844d944edc0f129ceba104104d01a8085a2aca0. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/BRUSA0500311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e9c91ff3acc47b971e2d2d2272ff03a6733bd55b2dd2bbc2c40ffb7d47def5e. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/BRUSA0500299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58c2e176d3d7df57813ae9f289e437b86ad89accda05791fe5a4b099cb31def9. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/BRUSA0500302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24723c5b361dcd7d9ca8db3590a39b22fb035d10c95e324f0597f1ddae6bab99. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/BRUSA0500316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ff564a39d067282bc0e63226435f120eb754e49b368286195378779a42152ae. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/BRUSA0500305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb9fc30163a7634fae18a3aa54cccf28f749ae43fa14e42450f9b2a91d0c8feb. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/BRUSA0500308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44c5b99689c76d98ff20651aa497191cdd1a9ffef75488c9a2e73dba72430d38. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/BRUSA0500324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44d4fa691d80f1ad22542448271271ba3e839b719a9dca4b48f2af2d66a53788. 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/BRAPI0500806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b16f73a506696830a6a5054b6ac97aeafd54f259954f615173feef2a774ee43. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/BRAPI0301676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5378bd28a46f1d3a282bca9ad641d9f15543360625eed10c7e698e8e436d26ae. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BRAPI0600835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0585a026666ed7eedd0a89a10af471e1d6aa0e81aa76600d7a6b5e4efbfcc27c. 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/BRAPI0301678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84f7c2eae0d2480bdd3b9c35a060ec96e92e2aba333fd958d014a76408b509fb. 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/BRAPI9900617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1705a59af5d3d1199177e958e703ae9f69e6c71fac3e08d9420e5a0f76ba204b. 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/BRUSA0700456.