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 0x816061fd70c74d0f18978a231510311e78cf34799e429454898a5774a0725195. Chain 2 (Bitcoin): anchored in block 953933 (2026-06-16T11:13:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1f5620f3-1f71-4620-a4d2-00baadc0f9bf.json and https://artists.proofprofile.net/proofs/artist/1f5620f3-1f71-4620-a4d2-00baadc0f9bf.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 0xd6f5fe209b1a1e2119b8072c39f95d1f64f10fab61afa79b1e283c8ae4a12354. 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/DKABA9907903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed9e1aef129aaea17d5073715a6368b50e0c0d51176cbcb875060c4b045d595d. 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/DKABA9907904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9569ad9bb7f66bbd725d1f5025052d9ede702bdb66fef196b630fc859a531a97. 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/DKABA9907905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6d204f74c9e6e3f7c54836054ba169a3dc8ee6e99683c86e0df15403e208059. 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/DKABA9907906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86f08ac27fd8d11bfe03c5b0b9f7523d8865303e1e16a9717ea72fdfdb579665. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:21:41Z), 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/DKABA9907915.
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 0x59d3112c5ab60898dd96f7b1261f8248f92f3b4679b1a56e5cc91ea922725d4c. 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/DKABA9907901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a7419eeb5badfae03dfa958b0c7d9e66426cd9d48789fa1d8877d0c59959777. Chain 2 (Bitcoin): anchored in block 960187 (2026-07-30T01:34:28Z), 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/DKABA9907902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9d4f92200ef16c870e6ea10cfb49454cab4a95eeabceb04477c80907e9e5d42. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/DKABA9907907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2b5abfaf2f4f8fac16702b990748abdaa3edfef2b32018276d063ccf00ea83b. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/DKABA9907908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bfe8827252ea2ce8294baf369ada0f3458995e3ca2c095f922ce4a87f6c0c48. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/DKABA9907909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52e0b3f6f0f96688cd6080bca05addb94a292070fc71a265cc3a74244fe9ddbe. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/DKABA9907910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcfbd5415e9f40aa46fcb4b4d3f77b019f78e23030841029516e5b36bac535cc. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/DKABA9907911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x182e9419f61e2ca6b7563d86ecdbb59609efb149aedc67b33941cff51b6dfef8. 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/DKABA9907912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05d7a5d3726ee3fee6b4c3a31bf4aaeaa6520c4ccde84c982c198f115fab14cc. 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/DKABA9907913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62a102bc8fbc9a7f29142fa46178c46672c965759885dbaf53de66e35a55b14e. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/DKABA9907914.
Der trænger til at blive skovlet noget sne
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a687762bc55512b2145c1a130681d098eff5dc9f35fe5ed428a7c0f6870f9ac. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/DKABA9907916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfff4f6ee5f078051c6991cb4a93354700e59a0448ee0f3c3a8285a2008cf054. 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/DK8VA2300101.