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 0xd038ed53c96391b086224b91a60da6d425746279cb7058050dcf66f9fe4c02b4. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e28319c0-37d8-444c-8a2f-5f279a992964.json and https://artists.proofprofile.net/proofs/artist/e28319c0-37d8-444c-8a2f-5f279a992964.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Musiksanseriet 1 - Børnemusik Fra Morgen Til Aften
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 0xff6d0494365e77ed48b72f8c6b3561e112ddafbf785c3dd9b9d67d771cf7feb9. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/DK9T62100106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dc53af687bd717a7b4b828f4920445482f909167010f1f9305aef61063f32d1. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/DK9T62100108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc864119af47bafabf6b5c9497f548bab0cc9edc70e2a516607d98888ec856620. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/DK9T62100109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73dcc72b5014b32b337bf631b77f134fdbd96c7dcf95d07d5d4e3fffae1f6008. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/DK9T62100110.
Musiksanseriet 2 - Børnemusik Til Leg Og Sansning
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x010ac7de8884ce52d119c32c316355c4e2f210ab3ede09295c5b886469d57d4a. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/DK9T62200110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eabaaaa577fb8d21116ded3209a73174316a5da9dddca2bc6d7244a1f2e12d6. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DK2DY2400517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b4fe9e73a50b70463ca14ad3494d9ff7d3b5a88d032751ab7f11fa0f7ef0cc7. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T12:01:54Z), 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/DK2DY2400519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c65eb09ce6544aaec5bfe6eafc9d36475ae3d7399aadd377545f672a4723874. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/DK2DY2400520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0918ded6a40a560dc9b7cff571d413ddc0253bacc6bbcf6c099a66662014f10a. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DK2DY2400521.
Musiksanseriet 3 - Børnemusik Til Fantasi & Leg
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ce2a307d5ebfb88edbe27d4c21dc9e2887016bb246ba696736ea6d730d41339. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/DK2DY2400483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f864b2237407390a4fe8bf0eed3350eeb91e0d5cdb5ab2703a8f405dfab2f64. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/DK2DY2500024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef3f29816d2d4e53c88e470257fc143c088b835dd171d4130fb9dc24d9622474. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:34:34Z), 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/DK2DY2500026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16985bb788d0a7e6894183d774990488a5094724d1974a292d4a99dea9ca11c4. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T12:26:09Z), 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/DK2DY2400446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa5c74d72c81d04189f2442fe83bf0448e61360c197492eb0363646c3deaa57e. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/DK2DY2500028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69b0990b5e3ad7a2553f746a61cb928f7c6ca3c3d64075c0d8f1c80c03151557. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/DK2DY2500029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6813d38389c49199da9f013e5bada880194062bcdd47133113caa3275abc8fb4. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T03:55:47Z), 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/DK2DY2500030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b4c257e3a5a9e77a857c308d409a763ff92f2d79a362942ef207059544d06c6. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/DK2DY2500131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1aa46085d980a18bf9ad1d1490be28adc171e3bb419c67f1d8df677737e4d1d. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/DK2DY2500132.