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 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 0x2cf18b7bd75f6fc8428e2b50d7434eb56fd5602f82ad25379a08835183e27744. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4e5e5a5e-702d-4ac3-a3e1-6fa27c5f2dfa.json and https://artists.proofprofile.net/proofs/artist/4e5e5a5e-702d-4ac3-a3e1-6fa27c5f2dfa.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 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 0x87c33243277fa37fd84ce12351db5c308df8ac8a0af1f58e1274db32c91d448c. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/DKY302000802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0604cc656484926fd84f380d7d2c5abb17ff2795a6d9e61c5a18ded4550a3e5. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/DKY302000804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25f226f7b0e4476ce2410a4a27febbcfe3447eba5d2af1b5b716daafdb9e2f2e. 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/DKY302000401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf19703cbebd4481bada28b0e3828f4314bac65686c0fbda90997d134e8212c6c. 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/DK2D71900701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca622a58ca56de19ad311b783cc59c411efc097b82a664968a5f6bfacee2f860. 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/DK2D71900101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcfc44651063bc0de9804bcdbf5b839222e3a94755e800472e06f66d1e29a80d. 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/DK2D71900105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00d975ed542e804d7abdaa907566ac37edf24be4f4c217a68a51fd375427be48. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DK2D71900106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e7440c2fd847ce35266706db2f7fed71ea5233ed429e1fab44dfb070baa9e24. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/DK2D71900110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00d975ed542e804d7abdaa907566ac37edf24be4f4c217a68a51fd375427be48. 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/DK2D71900106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84a9d0e03ebade3f8ed79110b8c0110eca7856276b2c9dc01971a94a322936a3. 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/DKA9Z2202102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44811cd14383ba9024f03824d9feff6ec7cc04c76ed358d898f1aab6418bd2cf. 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/DKA9Z2202103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf435c4ac56765e6bb0040e71347cf9ce7683447d2379e5764a9e8236ea9e2170. 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/DKA9Z2202104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3b1d36760b4a2339c208121c65a0ad378845b0270352337864eb27020a7d61f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DKA9Z2202105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa601f71d315ef0bf4ade208f2b35452f8db57c2525e7da05062498a1e844974f. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/DKA9Z2202106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cae6e7b7cdd5a58daed5aa81ccda762a31632f7cfbf811b14c6d3c1e8193251. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/DKA9Z2202107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2a334dc87822c6e7fe659b0265b46ba60bda185114268d868f327983a1ac9e1. 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/DKA9Z2202108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28d9be72bd14f72358cb0036e787f1527134f94b71d88c578500e280d75aa9dc. 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/DKA9Z2202109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa82cc830de3ea48629d7174f8a6168598cd6bbecc975b56fb75e4f0b305d85fb. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/DKA9Z2202101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0397cf988ad51b5ef2bb17987aa17a6db48ef57e80980c571d2666ddd29086e. 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/DKA9Z2202110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cd13efd7ede535293e47b68b43c36a0b53765e680f98c5bb4cb7b95e6fd2099. 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/DKA9Z2202111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3e396b04456516cba10f1c5bb73325aa17a574a0e955d39404742ecdc2f44f1. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/QM6P42053767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf526583b7adf8f1f8b475e7dc1a9af7d9286306bef9f33130b42677297ac85a5. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/QM6P42062654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa45a168318ef46904e38d2e4409f25033661f0ac2b745c2eb6a33e9b8464a9a6. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/QM6P42062661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3ac968cfc20c34a5e281bee2e687f9eab16ff16e10521c34bf68f01162e7014. 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/QM6P42062667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e814d67f174409e5c22013ef3506ad32460aa6cb892ac3bd25ced339824c603. 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/DKG2Y2300101.
Jesus' Young Soldiers (Documentary Soundtrack)
Åbn din gyldne port (Fællessang i Gellerup)