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 0x3f06acbf83a4836553109f7060540c3942fbe3d5474468a23b85da0b6819c586. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e3f2dbf1-a666-4dcf-9515-1349f4a469c8.json and https://artists.proofprofile.net/proofs/artist/e3f2dbf1-a666-4dcf-9515-1349f4a469c8.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 0x518fdc907441dfaf424638bdff51a1e799818bed258448b4985510d1d28ab5ad. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DKADG1200694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84d8fea358be36d0746620302db9840f03f19d5bfcbb8b915628b7322895c36f. 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/DKADG1200695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb432a1382972bf4848512135c03754a0c63b39162c67124e7a9fa435f12f780. 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/DKADG1200696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac389eeb1779081f5a71da4f4501d18fd5a239a9f71ec688c6afa1b50ffd0f4b. 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/DKADG1200701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7961c2c5878e00dbd95fb3d3b5e50234a963cfb8bf9d4eb1116d251206dd312. 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/DKADG1200703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bc345da8d7645421869f6e67b4fc4f8461302f998e96542d99b78274ddadc60. 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/DKADG1200704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a95d2d1c06cae27b604dc9181e00e0fbfb7b9eb932bf4ca7ac746d29ea45dd3. 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/DKADG1200705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c21f80643deb2ba87bde8c849877b6e97dc0f04746d3e6255d73a9e4910c675. 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/DKADG1200707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x900bc95dc39d1a27edd4bed63f3ab20fc2d72087b64b4122f4c6a24e384a25d3. 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/DKADG1200711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f850b105024306a29d9d6f129b3a91918e1de5cb5897a7052102f5e2d44c6d6. 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/DKADG1200712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b6c57367555ce6b86147f6b74a3049729d47c7825830e16f3ed2070b069abbd. 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/DKADG1200713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2760d9736a5dfe5612528491b7ec1bc1b05b58ea768d198abfc7313f1da0a4a7. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/DKADG1200693.
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 0x5c7419c29b84eb095ef19982a60b73949d77bf70263866b940a5c3f59ff7f275. 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/DKADG1200697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa12ae3d0fba43cf92f3300c7ea13a37ebf0e93e9428a79286b1c916dc260c88f. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/DKADG1200698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f60ec930923b31c70af88ea5e771c784bb01c8d086e0f3874ab7795dd86d95a. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/DKADG1200700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ee737cc2d4c2d1ff5dc9479db9fb56a4e1f86a6fe5086f5ad14b08447265f5f. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/DKADG1200702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57abcd857d5e384e4cb8a10fbe6989bc69c364a50af2b8cbd171dc3c47be6795. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/DKADG1200709.
Magnus Tagmus - Fra Kender du Decembervej
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f0bb62a07fc14c34e0a932b7b387fac9744e309cbf6de012c929f5b1c369620. 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/DKADG1200650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdad640450a966cd8cbf193ccb22599f503bf7b2ac252b18632d2f3146630d4f5. 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/DKADG1200644.
Det Kan Du Få For En Krone - Fra Jullerup Færgeby
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9104cd96d46a4c76ad4b5f7b40eb0e427022b88c57bac69149db95cfb095f82. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/DKAXK9774206.