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 0x0ad7653109a7710ccaa78b5760e22a4db410c5f488d0da85b3ac1e1c08f27ef6. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/793142f0-da6d-40b6-86d1-93881e228f25.json and https://artists.proofprofile.net/proofs/artist/793142f0-da6d-40b6-86d1-93881e228f25.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Smør på den forkerte side af brødet - tunnellen - Aalborg - Nørresundby - Tre søstre
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 0xda916e99fbe27edea0c5bd996423b9994220a3bbc3d6fb5f6b51ac914d5edbdf. 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/DKFD53648001.
Trillebøren - Tak for Marie - Magdas bryllup
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4891a31a19b700b7a8a4e5f663b2f90ec36c1cdca667993d22197622d3e2bfc6. 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/DKFD53648002.
Det vil vognmanden ikke synes om - Larsen-Ledet - husmanden på højskole
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7b5c9e520c88df5ed41b3506ab9d297fb07183fc14cf7742eccd1a9b1bc9ae1. 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/DKFD53648006.
6 på greben - 12 i luften - Smeden hos tandlægen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4c50545735aee686664f2c9891caa1ef49ccd797ab9b835b2654ac90e94ecd4. 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/DKFD53648007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x861c1edf165a20e1528317ddc6ca604b7cd50ef4878f3c71663aab543acfad78. 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/DKFD53648009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6579f5bbabb384c9cc646921ce546c1ac9fa395d19a69be7432dd3a19163634a. 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/DKFD53648010.
Fiskeskipperen og privatbanken - Ka' han ikke hedde Svend - Lidt om fødder og militæret
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf16b2494c09663cd42b139c6ae2458342bd7ff0d604eec61743f3178637c371d. 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/DKFD53648011.
Om at være brugtbilistforhandler - Hvad går den på literen Piger? - Heller fire nye dæk
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x842043b4d373f6643290eafbe6c98ee902b9e45310c42aef24bafb92be09f220. 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/DKFD53648017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eb848e964d0851312092fa12c9252c760f18390d7a12acb42750fd93eae88cd. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/DKFD53648003.
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
Gården brænder - bedstefar døde -aprilsnar - en daler til bedste far - snydt i grisehandel
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f22c37ada21dd0ac6fc51d38dcf966bb217d779fd79aea97dc0e6924557f920. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/DKFD53648004.
Ryger cerut i køleskabet - Gorillaen - Charley
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0bf4771f757b7a2b4ab23ea8505360f4eaba7c44c1dab563549922f5106c0b6. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/DKFD53648005.
Bugtalerdukken - på alderdomshjemmet - livet som entertainer
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x834f956937a7fd106185f33af09bac0a5f6d9bc0b08e3745ea8de54609ef3c3a. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/DKFD53648008.
Vendelboeb og hovedvejen til viborg -Har i bergen rejser her
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2b64dd3d6fe68919896313909c2f7d584162cc3ea7a44a8e1705ba920a1b3c7. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/DKFD53648012.
Hvor er anhængeren - landpostbuddet hos lægen - A wil bare saj farwal
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb70b99366ef3d6b04d3a01b8a107c3073718caf31ff0e9f1ff8cd599fcbba99. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/DKFD53648013.
Problemer hos barberen - en ko på sporet - brænde eller brændevin - sølvbruden vil bides - hvordan bliver man fotomodel
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78a65a18a1cd178827fe3a272ba7b6c00589e77cdddfc7daec590a23d45aaa27. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/DKFD53648014.
Sorte vinger - Hvide vinger - Rejsen til America - Niels Thomsen fra Toronto - Kromanden og stuepigen - Gården brænder
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4f8838e3172e68842104113be04fb15f403b2c2e772d7f72daa12d007927b96. 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/DKFD53648015.
Århushistorier - Førstekarlen og gårdsmandkonen - Fodbold Musene mod elefanterne - Kone og de tre børn - Aprilsnar - Ligtoget - Drengen og skiolebussen - Grøften skrider
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe803399d88c0c2869521a4ca95c3b4d7a1a75fa5a6647fe190ed806e8e2325d7. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/DKFD53648016.
Å Så' Det Ik' Engang Løwn [Det Bedste Af Det Bedste]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd56c1d9e08ae4ccfb0feaaf46bcd6081f9916c911d91fa7cc68f272e9dd248cf. 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/DKABA1101916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfbfa696b599e3b565dccc789e65c5a44d46aaa10ff24e1e0e3bd7a1e533a3dd. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/DKABA1101906.