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 0xa72ed03facbdec65423de574093a257060a3273fd40eea215fde6cb979e7921e. Chain 2 (Bitcoin): anchored in block 954650 (2026-06-21T04:51:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d96e255f-cf29-411a-bb91-1fc367922b99.json and https://artists.proofprofile.net/proofs/artist/d96e255f-cf29-411a-bb91-1fc367922b99.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Kristallen den fina (arr. G. Eriksson for vocal ensemble)
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 0x3ce83a8ce17b480e420cd22c74f6ae504369453e559c608d8f42e3df734d69ee. 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/SEBAC9305020.
Es ist ein Ros entsprungen (Lo How a Rose E'er Blooming)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c4af15ad1e9f5f5ce37fd3cbf222112cf3dfc87a9d12844e871968795239548. 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/SEBAC9305040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c627d25e95481670b746836bdd957b866f26591aa9f5ef07e105bea3af7ecb4. 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/SEBAC9305050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x960ace9c9968cd2671fa4df61b1352cb0110a6e966c47673ec823586921cebe3. 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/SEBAC9305080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa56c7b5e2993739d2f8b9c586c1f22d7bb83b9f9d00939326da299e7f4597028. 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/SEBAC9305090.
Ave maris stella EG 150: Ave maris stella
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3de03c1fb8463415d65f3ab27a8d15a74f9db4fe0afb7e17efafbccbb46ba633. 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/SEBAC9305110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2668bfc2fbca6a2fde8b0517e80a3beeeca5f3616b6783bd3e8e18eca9480004. 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/SEBAC9305120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a7196951979b45fe2eb81b71dc165f9dec8c7a216667ab226e2109329f0b609. 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/SEBAC9305130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ac1036a1774a267b6a043c53b65215d817fb63520d10b32f8ea72aca68a2595. 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/SEBAC9305140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a039715f3ce9b27967a85ab3e36347b8fe2998da57408cfb908a9d4da3d193f. 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/SEBAC9305150.
O magnum mysterium [Christmas responsory]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84a941e1d25af2794e2abe452b789cc71045f88e7b219ba174b7b2dc48c20d11. 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/SEBAC9305160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd32dc46f28dde4573655c5fda334bed908cc86c20d0fed23125b0680d995625a. 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/SEBAC9305170.
4 Motets pour le temps de Noel FP 152: No. 1. O magnum mysterium (arr. for vocal ensemble)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4977719b800b5c819a37bf7087ed9291bbe486027a17488eb95460001c05881. 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/SEBAC9305200.
Det korta livet / The Short Life - Rilkeensemblen
Det korta livet/The Short Life - Rilkeensemblen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b2d7df6bc0cad21e1dcb383e9fed7ee1354141dc06f906203f03c821bc0f3fd. 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/SEVOZ1153903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b7f58524887369eebbae44e824e84a7e9cf420e7b24d2f5427c88d54a3b4555. 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/SEVOZ1153904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d49b9dc4eccd684aee562b1db0ed2248b616077e87f40746c1633aa38aefc9d. 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/SEVOZ1153905.
Sommarpsalm (En vänlig grönskas rika drakt)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b80fa39d464faae549793656ee44bbd28ff1bbb0fb6fd4bb46641058548cecd. 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/SEVOZ1153907.
3 Korvisor till dikter av J.P. Jacobsen: I Seraillets have
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceeb687129501cd80c1775e2a5dac69c4fdf1997b4d08ba828a8c59db12f49ca. 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/SEVOZ1153908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa82f3b4c63cbf000e9c2aa46e7c184af33844280186d5f0e64bd9668d73ca1d2. 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/SEVOZ1153910.