1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x01c5569bb6a85f2352218135d23584e74b4b4b03520434311c867ff02da51fa4. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8f6a2681-f9b1-42f7-8767-1af2f1193829.json and https://artists.proofprofile.net/proofs/artist/8f6a2681-f9b1-42f7-8767-1af2f1193829.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 → block OTSBitcoinBlock must exist at that height 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 0x1ca95b947de5c06adb47f54fb6bc97eb511b8ab1f047a37d0dfa73ea02001560. 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/SEVOZ1001401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b465e6b5a537501d7817cc25fd7fb420171a02e9977888847c36957c90086fe. 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/SEVOZ1001402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fb7405f9e3f2eb21129825bcad5c6b8f229208e613aafbfa82ae73a96d48d41. 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/SEVOZ1001403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd42282e96ec9dc69626b637f7d9a4b479f3b00264baa92b19cbfa17178631486. 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/SEVOZ1001404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91ed77304586e51f812de4535ba05d4aee4f81c3a9b80aab296b3cb99a5c978c. 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/SEVOZ1001405.
5 Christmas Songs, Op. 1: No. 4, Giv mig ej glans (Arr. M. Dominique)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe52c428bc4ae4851cf185ad4aaceab62e5849ed84162a469d8828f8d1b0b87c5. 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/SEVOZ1001406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31ccbff08f4b51c643a21a8b396178e390454ee6ea3717b41495158f2d176f51. 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/SEVOZ1001407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x908f37fbd4200231236e9a7f507d6111db0dd2c720bebccc860aa11bdb52ccfa. 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/SEVOZ1001408.
Cavalleria rusticana: Intermezzo - Hosanna
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6488caa8b945bbf7586e2f05531d711516cc56cecd5314c31a675b32f7202ddd. 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/SEVOZ1001409.
Exsultate jubilate, K. 165, III. Alleluia: Allelujah
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc82a362954626f49fba931bd94b2568a58e75e04447dc073f154ea503d4baf1f. 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/SEVOZ1001410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd151c7ce15cdf9e63d4120412369392a4df4de4827f4f2826d2eb006645b58a2. 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/SEVOZ1001411.