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 0xf90c610a5c669aef3bb778a66e0521f7711fc4411ac562d5e430dc3476f5625d. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ef25b811-dde7-401f-a340-d1d6a73ae651.json and https://artists.proofprofile.net/proofs/artist/ef25b811-dde7-401f-a340-d1d6a73ae651.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 → 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 0xc1155ed86791f23769c472e9dda65bc591b473e7535624dc8a9c92ca6b6e8b76. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/NLUM72401651.
Voor God En Vaderland (Expanded Edition / Remastered 2025)
Je Voelt Pas Nattigheid Als Je Droog Komt Te Staan
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x214f21dd2dcd3cdd4816831179f9e85a46aa72f999c9d9bc67cc90739a3b4c30. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/NLUM72401616.
Lass Die Sterne Stehen (Expanded Edition / Remastered 2025)
Van Kwaad Tot Erger / Voor God En Vaderland
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf94db659f892e7daa3aea2bbe411b4eb86bd8a4b3e084412559c912481d5b207. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BEJ011000268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec4bc80b61baa8761b9acbe825d505a6eff09f6181cd30cf71fc6882e77e09f9. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BEJ011000269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x410fec41af63cc740409a10a0971ba1ac6331f9a3e43aa0e6fad4dd8a9d4a3ed. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/BEJ011000272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ef2c0f99d236946c9cb14f325c792c58bda65e83c9dbd924e9e9123d8f05a88. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BEJ011000274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67d64b676842e5c1c4e9f69f3cab62b2a4efcaae119af0b9b468fd8378660cc6. 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/BEJ011000277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6db6f99b8378900787954fc8e70ece0d87d70fd34abbfe5920ad16f537c7acc5. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BEJ011000278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8012b89a7387ce353e110978729db75b7cf5f286cb399be4c98b8d93c52fd7a6. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BEJ011000280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87f37309a3509789ee249b2a2d680418478567b50318e0988e5116d1f241af43. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BEJ011000283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5565995aad7f6134d565f9564f645408e9f86bf75a29e413b2e7f0994074dfdb. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/BEJ011000270.
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 0xe2104a4e0c370d2696a20c4e04b8f4c843dfe320ba5d3ef61c20e0e43d7088b0. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/BEJ011000271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a08221ff45ba4c8bbc1986b6d733343a820e73f5ce2512e77fde13edabbbc1c. Chain 2 (Bitcoin): anchored in block 960277 (2026-07-30T16:10:47Z), 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/BEJ011000273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1404cd1e797984a7ab071b808e879a6b643bb638dea2a40a5c0655d98408acf. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/BEJ011000275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e119083795b6e51f4fd1696f08192aee87564c342b9b725733762a16dd30a49. Chain 2 (Bitcoin): anchored in block 960179 (2026-07-30T00:39:11Z), 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/BEJ011000276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20d78ca6ae44e796e24bdf3950fecbe36327b2f03e8cce11e00fd1ca1a8efcb9. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/BEJ011000281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1c7accea06298aea849de872929a0d241de8c1bb06f0dbf9c1e7bd95f50e148. Chain 2 (Bitcoin): anchored in block 960422 (2026-07-31T15:27:29Z), 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/BEJ011000282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b666ef2467b95a7c46b233e4fa41e9a6d064bf86029416bc90108a7d2276913. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/BEJ011000284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d4e7c298ebcc3b791ebf0b766af24b824d868b296a7cdbef7051c1fba8cf6a7. 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/DEF811407502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fbf66891fa5746c90d0393bb9cfb816e1d4d71635ebe453848e39509e61eca5. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DEF811407504.
Hollandse Hits - Top 100 (Beste Aller Tijden)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf94db659f892e7daa3aea2bbe411b4eb86bd8a4b3e084412559c912481d5b207. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BEJ011000268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3f5cd154b22ad62275829dc0f6264eb21a38cfea79b5b838cf11bdbc2fb92f2. 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/NLUM70700160.
Stromberg - Der Film (Original Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78786be47af7227e21f842c568c6757b51fee642940be5e8c062169482e4c321. 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/DEQ022371876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf94db659f892e7daa3aea2bbe411b4eb86bd8a4b3e084412559c912481d5b207. 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/BEJ011000268.