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 0x68eca7441880230e5e02aaba10b80522aaddc3444e9fe2114b511e8a44e26fe2. Chain 2 (Bitcoin): anchored in block 954717 (2026-06-21T15:47:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f5500d0e-5969-41d1-999a-809a8adee2d1.json and https://artists.proofprofile.net/proofs/artist/f5500d0e-5969-41d1-999a-809a8adee2d1.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 0x130376852e875810f97f51247ff80e666303bb1f9628e481b6640191bd08fd6a. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/ES71G2318436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10cd63a68712965c73530eefd9e20569022ea035600289ebf59846ade44456f6. 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/ES71G2205948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd06873b2978b7a0ff8ad65704eca4f274ead7334c1403d046764850c48d8ef0. 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/ES71G2211541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60eb515e51d78d080e499fa0d8eebb4db8c5a52448c6aaae22d62fd1be6f6330. 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/ES71G2239996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe79748116199b8627581a1a43235ce9cab7e701ada2913bd85b53354ef0105a5. 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/ES71G2411775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd06873b2978b7a0ff8ad65704eca4f274ead7334c1403d046764850c48d8ef0. 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/ES71G2211541.
A Viagem dos Capitães da Areia a Bordo do Apolo 70
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c4f0e43175f3f5c86845b3183523e3bf096685bfa72c2a7596c0a6a310b8308. 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/PTPA11400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ce85c6869dd0e3f6e23200e37d9f302411fd02466afb2fcade4c120d95c1787. 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/PTPA11400020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ed92c4c96d7cf69c040ce7fe3f397ec80665bc5971fa5ebdb43b088a076e266. 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/PTPA11400022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe80d5b268b7c31b7bac4bc347af9bda010b46389040ad40368767e16c8ca4ef6. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/PTPA11400024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x671e645f3bf04f9088770931ac54ac94f998ee19c7a0b7891f89993f39fee57b. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/PTPA11400038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5f5bdcd82766a535ecf68f005ef390032b7d55021cd16da67a4f8555d29f2b2. 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/ES71G2215348.
Um Leve Início de Surdez/Colecção 1—Canções Para Amigos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc5a6968997e8030a43f5dce42a7b627111de601d0c5ee9f452455fef9574b83. 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/PT2A01820004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4563e7a6669591e37f5b9a78f39141f2df5eda273a780da6228fe33fd3024638. 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/PT2A01820005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff778da1b9e4120cb0234c46342b3c204cdaf0591da3a757036b699b76ee0401. 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/PT2A01820006.
Bom dia (para ouvir o Caleb tocar bateria)
Dois Brasileiros Apaixonados em Portugal
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb44f7049a7c31ac97665b0e43cb7fb7b9a8e1c67ec43c7823ab53beb0b856a9a. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/ES71G2504364.
Amamos Duvall de Tiago Guillul - Disco 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf826637b1a64188def66f7d13427fc2430239d345c5bcaaec935346da0cdea77. 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/QM6N22566104.