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 0x5e6f79f52d409b87f718c2dc1eb5102b98c6691708bfa3fecc339227f76df724. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e3524154-cc1b-4a0f-9fd6-3a9bda212c9c.json and https://artists.proofprofile.net/proofs/artist/e3524154-cc1b-4a0f-9fd6-3a9bda212c9c.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 0x4eb3a01f826617bb60fb489f3eef06e9f95eeb7bf14b4c0a2a0671784544c2ba. 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/DKUM72000267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4561c4ea50f09839828e83e85451a59aa94adf7ea11251c5bb587839a9a326d9. 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/DKUM72000270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5097d8f0e2fbdd82bc16d830fb440ed6b5576cb6baf1d2da11f9d94657669e85. 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/DKUM72000269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ec7855b95886014d7092b4f5393dd8a3d490f370f5d96a2a607873588ed150b. 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/DKUM72000268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79ecaef3221a139f7e50bd32a1dca491462000710770da9c396a302c083f736b. 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/DKUM72100490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x508f16834e563ced334c67da9a862d7d48403444db01e323106259661f967b4b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DKUM72000271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9d446c2510503ca62c945be6e1203de520f49fca96897b0b07b3d404ee9952d. 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/DKUM72100491.
Vi Er Venner - Musik fra filmen "Arne Alligator og Junglevennerne" / Dansk
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c3f4be117d5e9540d6b645ea232781d0fe61cc107f85d5008e78ccdbbe5a093. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DKUM72200373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x641954a4d7c871bc88a941d83653500f282d6d1eeb7ce2c620cee2e00b7732f6. 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/DKUM72100493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe31bd5319ec8990696bafb960efefad69cd0156aa823c485ce883fba1d9a50d. 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/DKUM72100492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82057a3a56e9d42796e7dcf7783fe00dcf306c4985d1a09a2972a6bb77082003. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DKUM72300515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43dd6f652e1d19196acc8845125c185f35becc8bf588b5f050fb577bc197b629. 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/DKUM72400094.
Jenny Jerboa - Musik fra filmen "Arne Alligator og Junglevennerne" / Dansk
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5a2cd59936890685291746c71c00afef6c1e32e0b68543d2755ba8484b72687. 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/DKUM72100494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfccbf5628da63826bbc4d8cf60a3bce6a910f8efdff25ee473d072fe5cff171. 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/DKUM72300582.
Arne Alligator og Junglevennerne (Musik fra filmen / Dansk)
Hajen - Musik fra filmen "Arne Alligator og Junglevennerne" / Dansk
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x720c20c6f73b90150a11330ba59dc7e6276d4be37699b120013a1aaf1cdd5950. 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/DKUM72400028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5a2cd59936890685291746c71c00afef6c1e32e0b68543d2755ba8484b72687. 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/DKUM72100494.
Langsomt Stille - Musik fra filmen "Arne Alligator og Junglevennerne" / Dansk
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x763d8d3fe12ac7283c312ca090e920441e0d44b2b34f572ce40aa4f22a6d53af. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DKUM72400029.
Tandtrolden - Musik fra filmen "Arne Alligator og Junglevennerne" / Dansk
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa46e2770d59dab17723f05fd1b09b8ed08cb31a232ebe5a7c966328ea810f2b5. 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/DKUM72400030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c3f4be117d5e9540d6b645ea232781d0fe61cc107f85d5008e78ccdbbe5a093. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DKUM72200373.
Junglevenner - Musik fra filmen "Arne Alligator og Junglevennerne" / Dansk
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2005d2d1964615267e340e647a1c0dfac838929c1c851d661b6651d649911252. 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/DKUM72300705.
En Flod - Musik fra filmen "Arne Alligator og Junglevennerne" / Dansk
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf385c01bd3d2ca0849d8f3600e6860e1c55fee57e74563b226a04a7a1608951a. 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/DKUM72400031.
Loppens Bedste Børnesange - Arne Alligator
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5097d8f0e2fbdd82bc16d830fb440ed6b5576cb6baf1d2da11f9d94657669e85. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DKUM72000269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82057a3a56e9d42796e7dcf7783fe00dcf306c4985d1a09a2972a6bb77082003. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/DKUM72300515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x641954a4d7c871bc88a941d83653500f282d6d1eeb7ce2c620cee2e00b7732f6. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DKUM72100493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfdc88d9275fe3a35036c50b2e6f7f6246733159eab0d1cc456588298b7a9f71. 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/DKUM72400093.
Tandtrolden (Musik fra filmen "Arne Alligator og Junglevennerne" / Dansk)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa46e2770d59dab17723f05fd1b09b8ed08cb31a232ebe5a7c966328ea810f2b5. 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/DKUM72400030.
Junglevenner (Musik fra filmen "Arne Alligator og Junglevennerne" / Dansk)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2005d2d1964615267e340e647a1c0dfac838929c1c851d661b6651d649911252. 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/DKUM72300705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f34ba023107b373f934a1957dc8ee8b6631da33b0b231f8baf386500291d720. 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/DKUM72200576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83d15d358fb7a677d9d4d3205e948b0f5592577eb10dfa49f4fda57704e74aa7. 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/DKUM72200571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83d15d358fb7a677d9d4d3205e948b0f5592577eb10dfa49f4fda57704e74aa7. 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/DKUM72200571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f34ba023107b373f934a1957dc8ee8b6631da33b0b231f8baf386500291d720. 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/DKUM72200576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eb3a01f826617bb60fb489f3eef06e9f95eeb7bf14b4c0a2a0671784544c2ba. 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/DKUM72000267.