Magdeburg ( , , ; ) is the capital of the German state of Saxony-Anhalt. The city is on the Elbe river. Otto I, the Holy Roman Emperor and the founder of the Archbishopric of Magdeburg, was buried i
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 0xb4d4688af0ba3fb8276b7d76b03fb004c2a1392068c77314cdee6aedde0a0d89. 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/671b72aa-e17b-4faa-907a-c588cd1ebf08.json and https://artists.proofprofile.net/proofs/artist/671b72aa-e17b-4faa-907a-c588cd1ebf08.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 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 0x6f606aaf54c566b3a54900859957979ff9d1eee07afbaaea520226ccfdd2f54f. 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/DEC739600165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc88ff2f6b68af750c45120a4e273925407ba597f80f0cdffaf0afa5f102553ad. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/DEC719400505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc03b58d607b534c671dbd46b947e944c34a18c7960ed460f192c35b01a2d3999. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/DEC739500319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce8b4a1b09f5d6f3ff2d154dfc750541f6eeea22602f28a14061a6664c9bf8f5. 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/DEC739500557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92904faa6ae2049b3804d331c5ba675ac9467ae250e955cc4cc8277e4deb1b78. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/DEC739400790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b55086745a3ec78976e9d5ad4197dcda09c1c7e97231c475229ae48d70c4aaa. 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/DEC739400800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95a3728f3ddc90641f5e295fe013e8ad4de07b5afd92c35e4139b490145e398d. 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/DEC739400624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3341ebbd0792ef79c260a04e3316811acd004f902fc6da4d420acf731abc94bb. 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/DEC739500560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26f909d4421596dddea3365ac439f3282b429174de4f569f01cdff175585d402. 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/DEC739600638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67a4f7be6cfbe931910f46108189063e75180114ba09ffe4d663cfda1b6ca255. 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/DEHU52200282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86cdfcab2db4f7e2df51d32ab69b924fe983ea6161689a1741755a380dc2a3a6. 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/DEC719400506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77af6a3be04e122f049a9fe8a49e8d455293550adc570b5ede4d2db9e50522fd. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/DEC689500187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a83ebebabc102dec43c6b061f825c18468473a4320cf5eb2bce9203da6ef2e2. 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/DEC739500136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41cf572a0456c4c4123eb8447cb31040517a790aeee78d79af39dbc593cfb0e0. 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/DEC739600633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa05c29116d83be23712d05b6a1123a56e2a1d43d78578023766ecf7e4b4b17c5. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/DEC730000461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3bdc50fd74ff1d17e3c5cc6aac217002baab19e795e5b170bff569f90c562f1. 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/DEC719400494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95a6ea8443c07d9fb6ffb426a0b65f53853528ac0bd43260f84d1b8d89cc6a3e. 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/DEHU52000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c7cabe87eab8ed81cd4d1c4d258ca4479800cfe76f7d45f5eb225a2c652c923. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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/DEHU52000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65bfa558096a2f0e2ed504829b6eb072b422858e808619b5988eb3176ed93d4d. 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/DEHU52000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c585ac2120dde278941d2f6106e73b07e33b5ec11d1dad0d6b535e931b94148. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/DEHU52000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e4a7fb890097e7ef1caf7466b01ab88bd5ea67349022cef4d912e5ba7e3e010. 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/DEHU52000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x546adbef17200d191bd50e8eddc5e2b0c7b3588ecbc1f9c739364d1d21ae761b. 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/DEHU52000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc6ce6badcc40e61e48f870492f4c363c986fec038b0b99059039bc1d0592aa3. 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/DEHU52000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe8ca553da75c31ab1f4e65c399b4a30e65395b1d0b524bab06570e5b0a94599. 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/DEHU52000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc150badb9a2274aa6e76440189ced606011c904ca5c348324382a49572682284. 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/DEC730700350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ea689f9c53db021f1cd947e771ccf1e1084afaa5cc9fb7b67ff1c3ab2844dec. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/DEC739800558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f6ef4111340dae2fd1d89e741a5dbfe3a495e207c2b8e3bcf336d7850269e84. 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/DEHU52000015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5989962b283966fd6f5628ae49026dd654b67f380624f1e8946dd757b5fd570f. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEC739400786.
Wie weit ist es bis ans Ende dieser Welt
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09590e58bccbdfd33a0b581bae711cad418472d78762366c5fae2cce131c3cd5. 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/DEC719400554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60934b2ce0ade7f979612213a911d4ca1a9a6417948e1eafb6e058a9d7bc69ba. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/DEC739600631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5afe050f5f882821b2354afa9101197a4fccc8864363e166cba9580ffaac5e82. 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/DEC739500511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb482886e9b5874c5fc75573d0b02506ec156a7ae09724dfb79735428eecd4508. 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/DEHU50900169.