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 0xdd0e9085fa1a64a847ed0dfd150a555999309f435e08c8ae85fc7bea6526af12. Chain 2 (Bitcoin): anchored in block 953765 (2026-06-15T08:55:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bcc956fb-c27e-476e-8132-2c8fa762838c.json and https://artists.proofprofile.net/proofs/artist/bcc956fb-c27e-476e-8132-2c8fa762838c.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 0x9b7415c6d933e9942df06386c0f1ffccd7545d97a800b26dd39fff3c355c65df. 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/USCGJ1502827.
Que Les Jodan (feat. Waor & Dheformer Galinier)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b6d5687bba6ff19fba4ad6901f836dc222585f6957986a75e05935e9f07623c. 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/USCGJ1502828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7686e2d8c1164a4354954660094f8948ce84b5e71c29aef7c46377ef524b724. 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/USCGJ1502838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3048e8deb360894ed3f5d52798fce5555c18844c64ea72d722c7fdf948924bc7. 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/ES6081242402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc19c87f60ac6b2baf040eb1f8d9e1ad1c31918a020f5de5f645a2f637f135c67. 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/ES6081242414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x640374887b4158a1a9230f85a35e6f75a6a2b3b71b67e2bb1d2ae50108b45335. 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/ES5021500606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c7f1fe119e6608ce4ab6cd4922b85cbe2e9e599f13750599c73c58ab9e3c6e1. 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/ES5021500616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63253dfe83892ce90d80963240f68bb62fbd83d666ac06264b6ae328d4c26fdf. 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/ES5021500608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa19bfcd4a24acf3935fec9f05194f611047b7979710b672f460a283651f02579. 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/ES5021500607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x498940f06afd0adbbf6294c7453728c1cbe35c8b6c5563de33b85f2aafccf4c8. 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/ES5021500610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafd2852c4b105199a9d975a1c46803aaea8fdfadc1b852899f360690e294a949. 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/ES5021500611.
Con Autoridad (feat. Nestakilla & Nemir)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe58a217bd3acd4a20518faba4454a15617629eec32186aa8728722a8d7f90e94. 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/ES5021500612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a825c8905ee5f6f068e25cab1e1eac51af20c5f70aa71fdf0b27373fd0b5e99. 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/ES5021500622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x173be4b6c5945dc37ddb072e6608b02227445fa625a4cbe7587dcd3ee056ed60. 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/ES5021500613.
El Premio Pa Ti (feat. El Canijo de Jerez & Maria Luna)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b16aefb674478482e7932ca1402c8d53c18b02463ffed821796f82c16edfed4. 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/ES5021500614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32a8dbd7361d3bd84ef8443b3a5fc0969c2d5eb845d906564cf316d87a928799. 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/ES5021500609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcf49c67506b6cdd1ae55ac9ad187e18fdd89f6497b985f4dc7162e19149c481. 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/ES5021500615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17a59486c4a58378c7eba3e8b43d227dd8491230982ba7725f9a22ec95904563. 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/ES5021500617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc891b87c2ec422f685e61c174f64a6f19ea3ef4c601125ca80c02e9d73ad693a. 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/ES5021500618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe872cf808ed481d5538760a3c3c45df0d4d00e5e166097d2799f930dce4257b6. 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/ES5021500619.
King Kong (feat. Murrah, Shotta & Niñato Garsiah)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x682d06f7b1162a8613c008eb95524ee310e9826b8313626f6df5b12c4f5aad9b. 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/ES5021500621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5958121e9be13283d591cd9193351d06a4d9623cb04ca6113c91ad8ebf2a0afd. 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/ES5021500620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56dd5ee151c31ed99c3379a9038ca07e809cb46cbf68ca73d11296062fb3c043. 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/ES5021500625.