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 0x720c709e0c95a2fc44ffd2dbf613351157038aaf288d5314fa681df275e747f4. 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/8709b4c5-4e12-4867-b407-06b305be9c1a.json and https://artists.proofprofile.net/proofs/artist/8709b4c5-4e12-4867-b407-06b305be9c1a.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 0x5d21a1aa17789a4abcb58859ccd593630b1062ed1fa378f2527ff6047a2b434f. 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/QMBZ92288799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdebc3d95f50e1cd64a01a8549f51a781d4febc3dccf44d043819bf73e7c5c3a4. 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/QZGLM2321579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fbd7a2eeab27762bcfa2ce9af05badb71a504eddd89b883199f991383c9e6eb. 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/QZW9K2479586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce8bab4193e3344f84ec1920694f2b862b5f92b133e4839358bd278235b89fdf. 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/QZW9L2468386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7e12b230ec660a55259a818d48a8f110b6c6f990fac9d8f8f0a64635e869be8. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZGLM2584085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7698e96da313f7507b19f5b9af3e39d748b9ffc40fd84a487d940def824dfb07. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZGLS2592342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x968815ed031c6f2d4d668e64bfcea3bb50228ed0bbe5f616073fc575db273e0b. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZMZ92542097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbca3992adcd17f75c41d939a62a3fced20c0ef5dbb3981111d90603d22e3efa. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZNJV2536876.
Chocolate con Pan (feat. Israel Amador, Big Lois)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82b2f906e3eb8635b211c18717920feeed833e9c37df28dd1534ec3bd69f52d4. 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/ES5152201736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b15f5bf7d50478317d20f3529c51d74795c289ece51bd085d490c7c6a848904. 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/QZ5FN2214365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe43eb279e469be6ddca65b4b700d87d82c6b5c3d43adfc46ab0284f9f8c9d3ae. 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/ES64E2309929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ac4ed32b0d5cbc69f68a28c7cb4ed81f4d7126e9bb7e36c32c235ac321e3a4f. 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/ES71G2313414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x765908e3243b81127f3b414c89fcfc1d97cc75eacebbb913e377c1f49e3a4896. 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/ES71G2224798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f71ccb59aa4f3733b65ea766aeb338de5f44a7b6bd484968771a04bd6d3e99a. 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/QM7282387173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8357f5b019f9456d498b63d9a89b1b5dc6e2b650360dd86768f5dcc989dc1607. 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/ESUM72301225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56c508d93da6e9feeb89e930dab00fb6810195a1ed4773af984f28d275b742f9. 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/ES5702200971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4673dca7c2b0e069d18c469ed5424f859200d49ae3b94989f5bd7ab3d11900a5. 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/ES71G2146321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf1416a6eb31a64591b79abacb28153361c1645e1dd0a931dd8aebd6a81d0928. 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/US83Z2351930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c24606a11d6476ee4948da5466d1692ffcfec13261dfdf609ecebd76f7afa0f. 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/QZTPX2464492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb7e679c0495c1ca201c5e2f70138b8ff6d131aa6362a56c9c8c20ffd6a16d81. 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/QZNJX2450657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd67ad7d51d752204d9382829770f0add8bf305fb7ac262be8e57052bab6b6f43. 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/ES64E2309426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b71a331e200f8b2579ae961120bed6066a9c201759d72cad34a3f29fc60c45b. 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/ES64E2205330.