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 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 0xfb7688a319dbc52d72a257f4a27ebd5eb5c99090421784f7b45c1fe34d913348. 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/64c3daf2-d561-4a03-867b-e35c53c42313.json and https://artists.proofprofile.net/proofs/artist/64c3daf2-d561-4a03-867b-e35c53c42313.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 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 0x4c436134f47a107e03b7f54a3fdfd2e6d89ff968e713d11bfdb45d0fca9f0b50. 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/ESA011223490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eb61849472ae394751c86298b507d4c964c93b5cb2e4ebf1566c209e3601d14. 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/ESA011223494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bb27865d76b172a17b22f95162eb10ab1828d86a822efa7da638e8b02d30eef. 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/ESA011302106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40d5d0ad91b1d6b2a3eafe34f413f0529354dcc5037824550d750b876a3745b6. 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/ESA011302108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x774ebb1c4f4005bb1943b1f5b918967a7892fb1193537b61f5706ec5be90c5ee. 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/ESA011302109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20c366b45de199396883b6d436f57239c0a55a5a942d2ebb8e521b2721854316. 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/ESA011302111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65c43e877ed4c8d4738b2939287dbfc835f3096f5056cafcf5422d065c624bd1. 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/ESA011302114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03df29a46ac60985c6a528ccdb4c8fc594311e9b037eed94314efac81a8f10f5. 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/ESA011302120.
SummerTape (Reggae and Dancehall Mixtape)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd1f94e48d30b263d0eba0034849707e3949d1b0be3dfaaa488164a5f8e8d015. 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/ESA011308034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6654b0d5b45e12c480c52b9ce44f73ba8444c8901acb694bf8850e29dbb8439. 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/ESA011401774.
Jamás Pedimos Fama (Remix Oficial By Heavy Roots)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x096443e61d46d56409981a1797ac86af33cce42a5af021442a402a2701f97fc1. 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/ES71G1605146.
Heavy Roots Riddim Instrumental Versions 2013 - 2016
Heavy Roots Instrumental Riddims 2013 - 2016 (Collection Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x234d968c81f151f8c24ffe02dd2f9c0cd9726d861820ec1765f2bde7a9cae12d. 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/FR2X41765610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a9df16060a322adda9eff91a22af123d79567fbd55406a9a61d45a05a303742. 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/FRX201903076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cded84d04df94919904ef008bb12220880ea79ecf3d48e64f48c510e275320c. 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/GBMA21865524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab8d44d6bcfa0340ebdca6dd8e3b50f4ca40e0e289fcdaa46a8376fa3f0ec130. 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/ES16E2100327.