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 0x3e0b948525203d481a9611c2f15ea3834871e3d0f20323ccd65bed7494e8ad4f. 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/03a95c11-389d-45ac-bf8c-e31e5201ccfd.json and https://artists.proofprofile.net/proofs/artist/03a95c11-389d-45ac-bf8c-e31e5201ccfd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Pop'n'jazz (feat. Morten Lund & Peter Vuust)
Nice Noise Sweet Silence (feat. Dennis Mackrel & Lars Møller)
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 0x02a25fa41e7ffd1d7007479bf1df85d187894d4566f5ce603c0f05eb9310f01e. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DKEBA0032201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b4ccc6df0bdd66f5b6138fd56434a28bd14c335ded1bc6146431ead03c167c9. 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/GBLPF0601585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fb5ddd61c73d6ab3a7d852a2adbd146b635b684147ef65b93f57ca3f1664218. 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/GBLPF0601582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98c4a2633b31f74ee82bdcabfc13cabcb7820fd66b12ab127e27aab62c73b7a1. 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/GBLPF0601592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf08366d1b74740d01ac992b44174e7de61c432d7c3e09dcac5cf82cc670852e5. 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/GBLPF0601594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1b8a35d411acdb11e205d79c7714aa8d7d6ab90751f5dd6456036f2a24c276f. 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/GBLPF0601588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x772525d6e2f22310207ea34f38e5aee7418949d3cd197426cd1c29501047456d. 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/GBLPF0601586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d73fd2ff1a029e7e562aed5dc27e93154dde9871bf38f64cd80acb97c30415b. 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/GBLPF0601590.
Lille Lise / Sommerfuglen / Bjornen sover
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaec09e91d4b4ed28caf918a7d8b9165d9407b6900a951755587b54db941de17. 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/GBLPF0601593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b4ccc6df0bdd66f5b6138fd56434a28bd14c335ded1bc6146431ead03c167c9. 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/GBLPF0601585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f3fa1bb1c5bcdbca9751ca20620aa4eff47daedef8849941e76165a5836f605. 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/GBLPF0601587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ab6152d7e03bb71ed9865cadd08d11d8bc915eb66e9e25b5c2a54fc26bdfcd1. 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/GBLPF0601591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2612d7caaa3314969ec785eea9b7d1f6c47d0eff623703e27fb6d5675b70902. 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/GBLPF0299070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62e68d2f0ee29b90a16e7b02888ea38c4e1a6c92edb87931f39b0b5c2ba2fbd0. 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/GBLPF0299071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0de4811fe18aa91db2392de7d23a30a8ce1b7551f81d0d417f417f83d256002. 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/GBLPF0299072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe193b476a8ef9dc62f498e6f08650d5daf1346eb82f044974f8cbf80cc424a26. 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/GBLPF0601595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbe34c7e74b0da9df44d64f8c43483146ec0f03e61a76add08a5f74ad8f471c6. 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/GBLPF0601584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x381d2523ebe36ce5a15751e9eebc4b150e0c67e2bf0740287f3b4b8149a45e52. 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/GBLPF0299073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x381d2523ebe36ce5a15751e9eebc4b150e0c67e2bf0740287f3b4b8149a45e52. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/GBLPF0299073.