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 0xb3fb18bceda09d1e70b4ac86aa1b7273d0e4327bce1f8db1b0dd0f7ac26a7854. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/16667d0e-2f1e-4a63-95d0-83ff2d06c262.json and https://artists.proofprofile.net/proofs/artist/16667d0e-2f1e-4a63-95d0-83ff2d06c262.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 0x1bc59253fe1ee8dd4d10b2c45e9f4ded7373c35aba4649d1486ef72ad5b38a6f. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZ5AB1743122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1ffa20e5cad8d52e0bbd7af37f90a5f7bc8328d8d050cfde4ebc5ef37f97b6a. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:04:29Z), 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/QZ5AB1743123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa695c9423e7ef307da0d62aec54ee3cd9b4d2a1eebabc7f65ea23d3cc9cc174. Chain 2 (Bitcoin): anchored in block 957671 (2026-07-12T07:35:31Z), 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/QZ5AB1743124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fe44f0e52833d3ad9d5770db7cee39263d608c03c3d746df9ab253b6dfc0549. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/QZ5AB1743126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84a5fb46ce3b5f505a41dad732496dc4b6db04ae6c3290d313bd1350d70051c9. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/QZ5AB1743129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbad46eb102a16922ac5c9cc05ab9e1c786af922a60d1d68c2bff1dc5d5e4551e. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/US7VG1937019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f76ba0238c13474999e07e2e961a5ca2667d8e81db7f4d3802367905d506bb3. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/US7VG1937029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae6049adb3afc719f3209f41a9c07b56f42079bd58a12bd43a6673d70e760fa4. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/US7VG1937031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe13756c87d47c2b5e043209bf5bf8d3d7c341d2a26251056bf486aa4033c3f0a. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/US7VG1535279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0929a503dedc0993773d431c99a1d2c3c4fd1a5c1e1ae2f8c5ddaad1b65aba80. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/US7VG1535281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf44cde23731e8cf81ec898b1c9ac8833ddaca4e10be302ac23d43e00e18542d4. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/US7VG1535283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed72ffc425825821ec2aa1fcf9c5648aca102e9f00120e5d897e9e516c1a5fec. Chain 2 (Bitcoin): anchored in block 957671 (2026-07-12T07:35:31Z), 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/US7VG1535285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8f0b5d365bef369e75e6c316cbcd2568fbba119688de28ac470a91c68f7e43b. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/US7VG1535286.
Sr. Bikini: En Vivo Con Toda Su Fuerza Desde el Multiforo Alicia
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe2c7530f5784ea51f9c543b2ed07164286ba051d371ec2570285dcc211246fe. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/US7VG1936722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7018557de683a9f0c54d2b524ca70ab24c34deb1c83362a6b587e96096a32931. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:35:48Z), 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/QZGLS1951406.
Pronto Nos Volveremos a Encontrar (Versión Kalimba)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dc42b1b99b1c99cb799ee9a3d47ce0cc941e9b6a8ead9e0173f2523dee8274b. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:26:27Z), 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/QZHZ32251043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d6efd106a00daf9f9bd69375cef23415834da056a0471f5bb5dedd210ba1f99. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZ5AB2342092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa200105f77f5c31bfe2b7df5e5fbd95d8898088399c683e94209ced4a87b163f. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZW9L2434579.
Desde el Teatro Metropólitan los Korucos (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x197742b081c6c0b7f484028002e111762432c6eb6e94917e10562a6785d1269f. 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/MXF601900327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22a88f2fe01acadcb42d6dc9af0e3f58c6e6a0077f666fb72ac8c125d72c557e. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/QZHZ62173154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75b3e393c65894742b66cd63d7518d630b426d6260933049f1c4eedfc89cf560. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/USCGJ0768503.
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