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 0x32a7160d21e12ed1f38068fa26996b7c32f73df65ab6986b0be13390f5bfb28b. Chain 2 (Bitcoin): anchored in block 954555 (2026-06-20T12:10:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/aee082ae-9266-48e6-a294-bc32d973944c.json and https://artists.proofprofile.net/proofs/artist/aee082ae-9266-48e6-a294-bc32d973944c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Tú skalt eiga morgindagin (Lív og Niels tulka Alf Prøysen)
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 0x8795c785b768ad7e36067748493b43f1086a21e754bb4486935bb1b27fec95f1. 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/DKBCA2400622.
Bingo - Niels Syngur Gunnleif Live (Onnur Økta Útgáva)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52a0056061c936c42ce8eabe5ab27b5b3388d6a2c376058a4c326f160280cf92. 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/FR6V82011808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88b4a97058f65f9c4f8c167acd5080581547409952bed5e5846ff751ab2f277c. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/FR6V82011810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f9daa73e055f77638c04bfe61a848323e8842ae155d0e96fdf69c61ef7dde6d. 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/FR6V82011811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5453f0f1b992c60db2e73cec054d3c5012063ac9a88c0f89dcf9619b7eadd597. 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/FR6V82011816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c3cadab875d424e52b8873b2fafd4b12b3cf9e2f582f3fc02353f5a12170d5a. 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/FRX871529697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6132b042b2899a3d20b3d87b7a796f83aee0b2d8acc9518441a4ab11ec1723a9. 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/FRX871529698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe165b099cf67e5e9609ea5a5db609a53fe8e67135bf8c910873a8f1ea9839a3b. 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/FRX871529702.
Sum ungur caballeiro (Lylli og Niels tulka Evert Taube á føroyskum)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74bea1b909494a2c234b3f276d9db127dd52ed2ca37cf8c74ef7db48d3878dbc. 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/FR6V81615448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60fb8233cc38c596d709c2c7c66e24a9b8dddd531048e84959ed072a92225c22. 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/FR6V81615449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67e95b2161b04693051b0ce4d1d4da4b7984beaab93ea5d7002913bd979010b7. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/FR6V81615450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a8629d7fadc02bd42b59361f4df693293fd126bd3b8bc8d985e0eab91939dc4. 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/FR6V81615451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe476567e8eac3dfe9e2b50c0c3dd9c0d828d825fd7be68e5bc68e126cf2ab9f1. 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/FR6V81615452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52ec79db7ca458cbd04ea61d1523aa9ed24caf90dd56caa3ff0fa09927867682. 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/FR6V81615453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a1d43a129749d2ab19b775b20bd7f5c2fd4ae0b27ade71fe7c35c32c1c2852d. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/FR6V81615454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde3d14da2a8ab146869edcc78c6461525a3ad23ea215ddedf9e1fd2bb0b8ce08. 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/FR6V81615455.