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 0xbc4db6d07a748f34bafcc635d735e5cea517bf0bff024a508892e1f0a5d50f6c. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3c54bcfd-4497-40d1-9100-f63469a491f0.json and https://artists.proofprofile.net/proofs/artist/3c54bcfd-4497-40d1-9100-f63469a491f0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Laut verkünde unsre Freude (2 Tenors, Baritone, Chorus)
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 0x86181d2d074420c5c10cedd4d24a05241dcdc08d4659cc0122f80ea5548fe1e0. 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/HKI190852514.
Laut verkünde unsre Freude, K. 623: Aria: Dieser Gottheit Allmacht (Tenor, Baritone)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35b42385853aedf9365c32ea6a08270c8a7ead398bc374ebc028207ead89f90d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/HKI190852515.
Dir, Seele des Weltalls, K. 429: Dir Seele des Weltalls (Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb32cb9b267acc2f201de559a21e305cb31a029afb83f1319458efd384a187fed. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/HKI190852501.
Zerfliesset heut', geliebte Bruder, K. 483
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea6d2ac975864a1fb2e64082058aaab32c923194b97e8bb698150f5031aa62bd. 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/HKI190852506.
Die ihr des unermesslichen Weltalls Schopfer ehrt, K. 619
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78faa51ce18c77547d00772062ab78c3cce26c034c77b3c1b04e2bdf0e654cb4. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/HKI190852510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86181d2d074420c5c10cedd4d24a05241dcdc08d4659cc0122f80ea5548fe1e0. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/HKI190852514.
Laut verkunde unsre Freude, K. 623: Aria: Dieser Gottheit Allmacht
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35b42385853aedf9365c32ea6a08270c8a7ead398bc374ebc028207ead89f90d. 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/HKI190852515.
Laut verkünde unsre Freude, K. 623: Duet: Lange sollen diese Mauern (Tenor, Baritone)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20343465ee2040cdccff241f25e76aeeb4b514a474b079f372fdc81032ecc40c. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/HKI190852516.
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
Dir, Seele des Weltalls, K. 429: Aria: Dir danken wir die Freude
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc8962970de8933fa9b7ce61c21a6b8e1aa6e3e24cf728b9c16fb311a054a805. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/HKI190852502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedc31b53ce3a6e363d4b02894128024906c895253bbe08e1a7890e2c5e316c0c. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/HKI190852505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3809fb5d10a21bcd924be3082b3f0b82845139bab2a13060e7b2538825aced01. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/HKI190852507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb39d26c7c5f1f4135ce635e091c4943d7220ef7542a5313b0af80870da61bd87. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/HKI190852508.
Lobegesang auf die feierliche Johannisloge, K. 148, "O heiliges Band der Freundschaft"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42285aec325ea2351a8c0a150cf1bfed7f05997a23d084265c823ac397225ece. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/HKI190852513.