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 0x858ed36a5783489c42ffd5ed83af3629f25738ebcbd1fa8420dc6b12d9f41e90. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e5fc0f92-dc57-4684-b957-e9c42a7e0a58.json and https://artists.proofprofile.net/proofs/artist/e5fc0f92-dc57-4684-b957-e9c42a7e0a58.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 0x612c31fbe0780ff5b822e5066ad151776758fd750af6de11ce515ffada604bd8. 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/NOBBH1901010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33e9002cf5d3803811258b3acd3faa48c91dd24950dc8f3373c641b5ddebb7b5. 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/NOBBH1901020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa19739a5bc506480248d9b27fbd745b7f3089446ece2d20e9fc8bdbf480c7eed. 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/NOBBH1901050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38aa8df402cf6d957b3956dead9792abd021c95f410db89a08f4929449b042e7. 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/NOBBH1901130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e7b52f36b4af36f22138df08d614de617f8308a44d07fb478b1dd50d46b6544. 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/NOBBH1901190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ad56627f4cf2035d4f9fedd6d5b51f28e7523a40e402a9c0137d4402e5b746d. 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/NOBBH1901200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f21cb70d17de832721657348ac4a9ea1bc7dd51a66264da2ef07eecce7ab9d8. 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/NOBBH1901210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcee98302a1c0a38a231cb30e2b26c0483d97c82d68e23468d686d0fa114ac9d7. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/NOBBH1901030.
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 0x8c41c661a16968e4ad34d2f1fad059f899266b2defd9f9e154fd47784e5f98e4. 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/NOBBH1901040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x105b1848e70cd42e13f9674a712b1da61f26bc5c655ce99470c7962d614528fb. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/NOBBH1901060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3654409853b58d7310af8339b0288e743f4850482dce3bf9c41f8c2c6b47ed1e. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/NOBBH1901070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50261199d2981e1992957c16de9dec3ccffdb2196e086407f2db6385aa5ae86c. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/NOBBH1901080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85ebb78a1bcae9d5a6cf3e381edeb1c6e5e7e4bd12303f3c013a74bf684ed02c. 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/NOBBH1901090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8c4156eac106465b594ce9a70bc28d29f6bd084dcc5dd17192b822482f93a60. 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/NOBBH1901100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91e05ee84d7eb49e4fe912044d6a6992bfc3114724d783cb0371fe937ab83d59. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/NOBBH1901110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb7a6ef686453e792d31014fe579c19ca8adc939313eef8cde802ae041fc9012. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/NOBBH1901120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a1673b0411f88ff9d0d4822166fdca84d2b8be3ec1a22da892c1cb1cf7fde8f. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/NOBBH1901140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07800a7301fa0e62eec7c7922116aa49526b632bff69df72aee7fb9361a72cd1. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/NOBBH1901150.
Jesus Kristus er i går og i dag den samme
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa053a5db05fb0010eedb8b80bbdec87e436af1a0919330b258d7506ece36fc8f. 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/NOBBH1901160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ec1a09b3e50640ef0ba7161cae7e29ac8a091844379703244c3158db02536f4. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/NOBBH1901170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ea9b3c7249260cf5e82cccea1966aecc756b99b630695855a348cbfa86b0c45. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), 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/NOBBH1901180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8a7394370c660ac7f179030d8cc056a195158a965648057a9e0db83829da353. 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/NOBBH1901220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x799b8f692550f1ed12e4ccb03a3fecb612adf5d5b9e5c83b688067e921926c40. 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/NOVF01501070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34e9909f81e07fa498c82d6c2ea743a2d2275933c1d40b3227a6fff4fe4c9b62. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/NOVF01501030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe90872e613dc2bea642642dce2fce1d8a5d8b983493f13a0691d4f40455ace5. 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/NOFLL0807080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe65aa1463d49254d02a25ddb35716a6d7a9a869c1aa2bbb2c54356c7a147f6c9. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/NOFLL0521020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf83ee3257ba61b8a053cabf4dd449fd439f186415b4588a19c0c584a273969d9. 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/NOFLL0521030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4411375ebf96bdc38a1719cd46af965a399ed7b7c755d4b3ecd9d5d1307e9f9e. 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/NOFLL0521070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4f9ab8379bb9f10d021e42d044e089896840c46b823a2d2078a4d2d6f227057. 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/NOFLL0521080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabb556c3807780f3944343ff934bc0625cd97728c94fa8229c0fd1576269e53a. 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/NOFLL0521110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33ad42c89d679ac6781578e246f004d959b74757c5b1b0de04750ccb54d03945. 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/NOFLL0521120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x067a1b932bc5566889719944717b25f7e1fc535d8765af0e15a30329c93ba039. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/NOFLL0521040.