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 0x8e44d222764727342a3e55627ea5ab34ed69ce63aba8b70ecccb54b701835ca1. 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/89131ef4-bf3c-489c-b6d0-9e75e05fbf2a.json and https://artists.proofprofile.net/proofs/artist/89131ef4-bf3c-489c-b6d0-9e75e05fbf2a.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 0x72462e3d2f9e732833035d23152e7fcae43d7a55379873d09bb25244cc3abd7a. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/CZA168700660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1e007e1527d3a1a61131163a940dd975161882ebd77ab77486ea0961cf9d82f. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/CZA168700662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2e001bdedfeb28a54241d19eca88e244152bd431f00acd372421f39fc156674. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/CZA168700663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c7724141b3d11018bf09f847493727ba4f94ad1606d308d06cc3a8d31e173f9. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/CZA168700665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe97563bea06a31eee11b292f0b76e0c580a51ab93965fc0b0eafcdb1faed9581. 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/CZA168700670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd79b8d5f31cf33ec3ce704a0303e1c03c671630e330983a384363f3cba4e8665. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/CZA169000530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d0dddc840b3c610c09c566b7ca8b1e8de59ff818c3ddf5d55507ff885ac4121. 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/CZA169000531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc47058f92b019619b7d1fcef78bc79c9eed774a87054654166645a869d33f2ad. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/CZA169000537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bcd3c4ea62aedcb65387568f1800617549d911cad4552f22156593b3b7fc5bb. Chain 2 (Bitcoin): anchored in block 957661 (2026-07-12T05:37:10Z), 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/CZA169000539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2904a598efc62fdb28fd8574b82bbbe08e1d914bcecc6cf4f7b94ffdbe54846b. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-02T21:02:00Z), 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/CZA169000543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd30e5e021696db9fe323d716f14adaef43ff3cc9e478698aafbd37acce54eb32. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/CZA169000544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93154864cad14cf3f21d0246b667d6e0d6abd92b66d0fef3fc45bde5d7dd1fd0. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/CZA169100707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x951a880ed0e016fa781c708814abc3ddf7ea35ba7617f4fad34ef813bccffd1b. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:35:21Z), 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/CZA169100711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44e0c2d263ba0eaa5376bc067088134b19f8d05b988a939545863202a9e1b3bc. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/CZF951600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35123079b327c563494a81d4bfdf42179ad1927a9be431d77a52a8c2197a712a. 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/CZF951600002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02feb7900ef2cf24fb37922acf6525ab5e368c5b9a3f2f1c1184e4dc1606977f. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/CZF951600003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe924eec0861ce1a9af1b0e81a0898c2c3d4c2df94948167c03d45ab2b4d872cc. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/CZF951600005.
Tak jsme vandrovali... / Alba a singly 1985-1991
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74f5ff21ad01a5dc8f6b4add73bcbe0ef8582b9e68ea4aabd9853ade2e2c32ae. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CZA168700664.