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 0x921adb1aa8a69a2559411e1b6b98de681ba223efd58a5c0e7fb449f5a6330e6a. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2cc573b1-9d90-4264-851d-ccd1dcf73a01.json and https://artists.proofprofile.net/proofs/artist/2cc573b1-9d90-4264-851d-ccd1dcf73a01.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Massenet: Manon, Act 2: "Instant charmant" - "En fermant les yeux, je vois là-bas" (Des Grieux)
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 0x48db0c00fa71bd57c271c18c979fd3b9edf9620c30220477521173c4f792a7b6. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBAYC9704739.
7 Dikter, Op. 28: No. 5, Jag längtar dig
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x969efd27c193a554556f318fdef9cd54f83ac49cc934ca144b900bfed5027e01. 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/SEBAA1305401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a3c81a2a4cdcdc0c554603716b9326d2f8961f0d9f90d6ee2afee9a8a6a67ef. 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/SEBAA1305402.
4 Visor i folkton, Op. 5: No. 4, Bland skogens höga furustammar
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2a4eafddee6b0a82bae10898eb75751868ef64a71beb52d7ccf839ea59ace4c. 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/SEBAA1305403.
4 Visor i folkton, Op. 5: No. 1, När jag för mig själv i mörka skogen går
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04f6629ba79d17e304917dbafb842cea9d2d139b2c645e84d7e164f851d1b100. 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/SEBAA1305404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e9f499a6358475db231bf92dfb3fc1f9ef97a7055b48468bc0b728d774f2660. 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/SEBAA1305406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51f8234dc7af5915778d4d71a059c3e73a6c8b6e75e95cf72770ff3bc9689c9f. 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/SEBAA1305407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d8de05f196410b41c30d19c771d36e2610bafce1f03ec4083516fd719d9988e. 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/SEBAA1305408.
6 Songs, Op. 36: No. 6, Demanten på marssnön
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x312a514724013d9aa2e215f7868056795052d0815520056680e721a2248ddfb0. 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/SEBAA1305409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17d8ed01eb1a4cb8f4463a2715cf826439baf4f572bf5984facabdd3e92c8f68. 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/SEBAA1305410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0d66a70de34824b8a93c968b62d0731d5c7011ec8e8f3c8ab52486b26967d08. 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/SEBAA1305411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe663d22a282a9db0ef2ce810088e3e4484797d4d9a23545bbfd64129046054fc. 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/SEBAA1305412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6bfc9520061a02faf907b6f8ce5cc3256e4472a060cf5bd8420fd2161ed26c3. 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/SEBAA1305413.
6 Songs, Op. 48: No. 4, Die Ehre Gottes aus der Natur
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e216aa15a784be8f0321b2551acb855663b0a4da063e7d88db075a6dc23d8b3. 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/SEBAA1305414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2224c475fbd6893642fb262b9d246db00357db4eb6f93218439f7dd4636dfa3. 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/SEBAA1305415.