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 0x0f69f67628555e73a7710d48216870218652656a7d2d51b0667a8a0770ca7c6c. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1dbcfe65-79e5-4ad4-a039-bf5e12047ae6.json and https://artists.proofprofile.net/proofs/artist/1dbcfe65-79e5-4ad4-a039-bf5e12047ae6.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 0x8e51cc64799d062c145e081315f3f0d49578e603515a33944175c9d19387f7c6. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZNJX2474535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x533102cfc184bacae80e961b830d3fa99078769a861de21c52648754d613a1ac. 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/QZTPX2455234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfd8e5ea91e9acbf4c979db7167e139da43319b7429cedaec9e4798f6d2553f1. 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/GBMA22418378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4be6ddf77d5fc919632501d78e0c3cb95941a9de623777ec5af5bbec0b10c6e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBMA22499898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa29b04227cbe9aa441bfc77120846c4b71e02b1461d7d1e661d68d2df7f3b339. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBMA22452652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbf8c533b2f0c79dcdf74c5169284ded4caa05af58d88435b2b022cab3d58079. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZNJY2494464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x509b01063ed9a96becf206692a812263d2a5c33d0a31cd2174a5df07ce5caab4. 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/UKXN22470385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc043602c97ec8e9ff5495e95de3ac9c9ffe0a4e324c18ae578ebd05b61145365. 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/BKNU22400181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec6f55fcb1067d8e6731a2b96ab6a22db60b579cedb8c24f240b45d3dcebca97. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BK2242401247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd47a7e66ae67e519844f81bc056498c7fd3a2496760fea32960ee54390ba6e6d. 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/AUGBT2403514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12377123ad046075ba5ccf806439ab0f89f2fc518d4123144891348fa06cf028. 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/BC7MM2400199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd419613536046d467929601dbf0c60880d3747632b6b4d0ff334f9b188d71267. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZTPX2423915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6c8ac358ac7f820fa5dc3e7dfffae220e3e57d6a81c76d898cff72afb7d0faa. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/UKXN22519238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0edf8e2b13a37e029fb68f72b3f925a8d4ec2f3445f97d8520eace103ddfa078. 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/GXF9Q2442214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eec6a3f80c184fb0a6f5e634fbf9354c8bbecf238aa2de6dd78dc2e65d24204. 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/GX53U2497469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51f3ab56fe499b48a18de4e39fd63f872a3df3fe4eee05ffa60b5457efe42795. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GX53U2497467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94f24513789000806bf610c1d0357dda83a8800352a28db6c9e8ae7cccd0992a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GX53U2411058.
Bonde das Oncinhas X Dentro do Carro Bicho
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1955ad0b7a5c26d5ef73ad45babc64db24f14254bea384f6112d42461a62f628. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/BX4KA2400035.
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