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 0x5b19ceb232b7be0021e0b1dae3e010c690dfd9f1eeb29474ba9e9e5dc0bcdf63. 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/0e2b08b7-6327-4f0a-993d-b7539fb73172.json and https://artists.proofprofile.net/proofs/artist/0e2b08b7-6327-4f0a-993d-b7539fb73172.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Om 100 år er allting glemt (feat. Lothepus)
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 0x964ca4394c57743d20c0464f4f01501cee9405d963e8135099eccd06406bf386. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NOAJR1700063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bebfcf9f0372d4d8bd0ea7ba4ffd6aeb54f52a6442da9a801e377c9db032c90. 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/NOSXB1415010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26f19717ae2bf144b7dcd6a824431389e2c70bf81344837e0b972cd0939b6390. 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/NOSXB1415020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb5cbfbb3a1ebf57c434804479e4256c70995c925a923a1d8ca36cb6881b7dd9. 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/NOSXB1415030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x350fcc865e26f9b3394966cd1159fa86ed29c348c6cf8a23dc58f9045eb673b6. 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/NOSXB1415040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b09374a4d69fd48b1788cd11c561f8bb61d50e7e51e9d7185efe5e646021b5e. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/NOSXB1415050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52c3ced8894cee4a36d2c8f379d9ce64c194c55b5496970c31baff8a2352167b. 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/NOSXB1415060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1b61c2b72e555024d3023953cdee0a44c0695e5af3f83ed9fafa32135ac9e6d. 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/NOSXB1415070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ee39311dd2c9fa9a2d17649e8f02de42402cdf9d1c5a68d36a537c067cb56ff. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/NOSXB1415080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd37cfe5c0d0ebfc1e537721521b9c3b35ec6980dd80b0a583cdfae4cdf686905. 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/NOSXB1415090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe507939765eb626d65379a7b274aa60658f07c1a88c28c5e4118aa6eae0b5bee. 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/NOSXB1415110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83fdd50bb8e73578c0403224d433a5cb03556950db06d8fa81c07d33b7403932. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/NOSXB1415120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ad82b19d74fe433582f076fb53fe4bc58b456da1cab4ee1a9873a9deef486ca. 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/NO24Y0901010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7eb74e28e3fa0da8137a4d9f6baba3458b69d70de09548ad3a721b8714a1d90. 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/NO24Y0901020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb88a3597c69b8129fe468ca7c20aa3a5b7350f13154ce009cbf983b2a40e1d4. 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/NO24Y0901030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa7804d36e0dd09bb5b1ef853012c89b9a6c703ef986320a97d6e17f6568b216. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/NO24Y0901040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06b52690df332958a5240838b5c7b860adbc3c186adf8d71d2a969cc2b90e776. 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/NO24Y0901050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bdc18dbf06d7450a2a8716113df0d6784a8099bd499066203de87232ec1fd0d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/NO24Y0901060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x541d40d6186ccee842581e505d7724fe3ce4e2fb1cf6933f14c05f2ad7cea016. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/NO24Y0901070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21c4b0c6b756e15ae40d598de6ba7ee7690eee2d4b3b68ada7e3f0297757e61f. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/NO24Y0901080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6629363490836a7e818cd8c0594af7519cd70738baf0b741b493e8ae61414bf. 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/NO24Y0901090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x743bf3d5d99ed648b772a038dc9ad236e5366b62f24802209eb9a317c3d8148d. 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/NO24Y0901100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe234211d333b3f3c57ce0714f4a4ed72a39b1950c699b4f585e61b90efc20bc6. 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/NO24Y0901110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5326c5e3bc36063edd7240e8c6fc3932d5816ffa2b4f63b90b0d72dcc143be85. 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/NO24Y0901120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0108ed418ab6d39748a94bfd10342ade66d855639e3ff1791c6984ad6d26c2bc. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NOMYN2301010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf10f4ded8c867cc59b86b6175b439bdd4df7249c2314c960c862e37062a2cf5. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZHNA2046427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x010f6d3bc07fd43df09757191e99279a820fd4cc2c8785c3979ec7cd4eeb9cce. 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/NOSRM1804010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf120f05dd5a82812730edcae0d325a6a681644522ee001b86244cadef1872d5f. 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/NOSRM1803010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x860da028e6aa252b248e5802e68e1ee95dae6d5c5ac72175de63c5506d3454f8. 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/NOSRM1802010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7547ee1a0830efa8dbc9e6e0e5f137b1e03daa65a7edf2cdf0aacf0577c2b26. 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/NOSRM1801010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeb71d248b35743782446f139e613553591b82fd257f9af5c86b4c9c6164a8af. 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/NOCWZ1801939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1be6cefcfd0bfa2379220a864a75b4d70720b0defbde3ddf1470b26084ce16f0. 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/GB5EA1605298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26f19717ae2bf144b7dcd6a824431389e2c70bf81344837e0b972cd0939b6390. 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/NOSXB1415020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x291287ecb77ace0b8943548cc1da256a5f8f9a77700c467261cd0dd6954d019b. 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/NOBHJ2407010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68d483985a78daa30d8a2034b3acfb59bc4e9a1c66af46384f013c10889d6572. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMFME2148601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbb5f56d393229effd5e13e1d16f03c7544ef4d6194d2fc14e7a5248a571e59e. 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/NOAGW1700456.