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 0xd6a6c320c8aaaf793a3c2527cf4ad9f4b96a69dc2cf77710c6b82462cd7385bc. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b63b414e-0d7f-49ad-94c2-45b043be645c.json and https://artists.proofprofile.net/proofs/artist/b63b414e-0d7f-49ad-94c2-45b043be645c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Aus tiefer Not schrei ich zu dir (Arr. M. Lewon)
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 0x1bc2f4b67f240968e6b759f14d4034269ac87a41073038e06b916047f6d9b0b8. 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/DEB901700902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ad690b5fcc8ad6f1a7cc1f9dfb5cb35c0f32da1084ce5f93c706ee1a6b5ed48. 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/DEB901700907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x266abc0531938c5d5a16f4d236c83d15adfa4e84b28c6bb8eb680b4e0b542bc9. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEB901700914.
Le Roman de la Rose: Love Songs of the Romance of the Rose, France 13th-14th Centuries
Invisible from a Secluded Place: Chants of the Cistercian Nuns
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bfe64f477d665966a48dd4d1ac0e46b2f005c731f97fa23aae7d8f6f9182a45. 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/DEB901500309.
Ich saz ûf einem steine - Ich hôrte diu wazzer diezen - Ich sach mit mînen ougen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe62aeab4a40f73991f64877ca3eb35f9ffed1720df50ab461c3b299d0b71866b. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/DEB901500307.
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95850e217cff5c4c7656196b891e99348ad9de79043985269cc5138d8f360bb4. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/DEB901500311.
Kiss of Peace: Songs from the Dendermonde Manuscript
Symphonia armonie celestium revelationum (Excerpts): No. 8, Ave Maria, O auctrix vitae
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc52723c32dfdc57c1131834e0b0e8e13cf85b7b96bb561664d0af441a3a44e0. 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/DEB901301003.
Symphonia armonie celestium revelationum (Excerpts): No. 34, O lucidissima apostolorum turba (1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65d0ec244e0d43d30509bd6745472d5194feae047a498b8d7eef8c16b58fdb70. 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/DEB901301009.
Symphonia armonie celestium revelationum (Excerpts): No. 33, O cohors milicie
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f594eee6f93d6e0a21f2e752e0f591c1964880418c70bac888b805851c2fca8. 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/DEB901301010.
Symphonia armonie celestium revelationum (Excerpts): No. 10, O splendidissima gemma - Lætatus sum
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd80346423c4a01e9c03f76dbf2d5d3f68b4bd8a74f4bfc8ad0000d5caa9e08c3. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/DEB901301001.
Symphonia armonie celestium revelationum (Excerpts): No. 31, O spectabiles viri (1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67e8ee0316b9b4aeb0848ed3e5b1cc993e7da6db730a37ed36a43914d69bff27. 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/DEB901301004.
Symphonia armonie celestium revelationum (Excerpts): No. 25, Karitas habundat - Dixit dominus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7ffe7f79dfe4b8f0d9811b75563cd339444e8324cf1c07a0143cf65c2e095fd. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/DEB901301006.
Symphonia armonie celestium revelationum (Excerpts): No. 26, Laus Trinitati
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a122854e12f9b89167503566ecd2fae5bfdaaa6f51b9c3d64e23792af7b4fcf. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/DEB901301007.
Symphonia armonie celestium revelationum (Excerpts): No. 27, O ignee Spiritus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7b8ed383a1bec669541bdb5907d1287766f49956f5e5b92432cf03fe76d6ec6. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/DEB901301008.
Symphonia armonie celestium revelationum (Excerpts): No. 42, O viriditas digiti Dei
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x976b1360fedad63c11f832233a9f0e879423d6bfb49bfa8d18760b28e50b68bb. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/DEB901301011.
Symphonia armonie celestium revelationum (Excerpts): No. 6, O magne Pater (1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41b43b6bb153eeff12196db3b2d9b6488ddaf4db336e071ab770a0781a6344df. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/DEB901301012.