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 0x697fd95452461c5c8a2b82fcd190b46777929414ba2d38d97fd71771ee6fe00a. 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/a603af20-85a5-4964-855f-b2bdc2fd65f3.json and https://artists.proofprofile.net/proofs/artist/a603af20-85a5-4964-855f-b2bdc2fd65f3.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 0xa3a659c344439b8d032b9e8ca733490eeb33e2fbad8f844a1336d22226aeb7dc. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZTB22467760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x489bd58c584c9fe0bceb73f1c92c5a9d7e53731a1bac18652966836f5f1d4929. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/QZTAZ2469910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcee93565170430ef6c563b5a336d8bb7fcd44ec2d03953593c0dec86344b8e3. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZTAZ2490093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b398c058c661ba774a5b3036f4b6c84fb30a25a0d2fa5c6187423162f248607. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZTB22451676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa140b9c76239ee6c2961eac5e13353a98b356762b2d3ece0d89bdfd0e2402fd9. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZTB22460909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb65d49251f718de926eba421f3cf032a07fea011ab74482eb246648979ed98b3. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZTB22481453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95ca5d92571b6fb9d6ae3c5736c8834e491582fd96f1318029351bb0d5738389. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QZTB22498153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf23052948384c28f84cae5f7385e8303ee90372a67447781d1be2389a72f18d. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZTB32493348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7b1faa7a0d8d9e81753f33896d3059bf50bd7cbdc42ee22634f668321bfa341. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZTBB2451475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4980383a2d371de37e80e550c76419f20cf7424693d5aa7ba6cf91d6e4a947e8. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZWFE2499540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73a92d220828394c2abaa638eeb302fc517575d47a1eab1138713ea17694e2ca. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/QZWFE2475919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x025940df59aad12817004b9e466d63e59b4ad4443650eb18cdcd86ec14e1002d. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZWFP2436734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4134b50a3ac392923a9864d6fe3616ef5c2284ef924c06f6043427972ff0e429. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZWFQ2421373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6989199f2f3410875eae1c3785bf95c01e731a8864e4050a684cbdb9a7267c7. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZWFN2494753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab634bf41c13c980fe260694e2d90e02d5be32f39cf914f3913067b4009d5113. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/QZWFQ2496199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24d73fe8244a3bfc579a3677a63fbb2fa753279f06a9abcc7bc21554022957b3. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T01:47:42Z), 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/QZWFS2407934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1398c16aceae90c08e92601317b5e4c4b1e82b59e81185cf3be6e3777eefe7ad. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/QZWFS2414593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x533df27a6bffda351ef5023f21bf7704b7392346085a9fb3b33313e7c422d3f1. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZWFS2435159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b12971ef194b44cd3f9ddf2bcb9c4b77c5780697787fbb265fe85da21804105. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QZWFS2489336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd64d7c19b2ae170a99c16aa8cd136842747585e0a0e368e93dda75c35a8a38de. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZWFT2444421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cc57e7c1ed451cb23ff9ac256858bc9dcc59c964b59bd6170feea4accde3d36. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZWFT2465712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x535aed223f4c7019cdda42278c22597bfc573ddd313308f1858b2b266f0f22f8. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/QZWFV2464695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88f491f9c009ee62680b065c1f5ecd9d367958b9d2bd846c6ad2296d88f74cbb. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZWFW2449717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x183dd3e8e8fd34fbfc330c10b7d52fcc564b08c2af5db484e3fb43f827407d56. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZZ772498009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e5628594a89177ef772e677289deefc8572e687c94fbf28ca713968a4e8424c. 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/QZZ7K2456952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f249a256c155c9e9ed4819dd31de2a5a82af509be598ac3b13f7ef8ac309a65. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZZ7X2446473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e4ccee73c1e47fb69043c002fb487883fa091177a4c7c41ae22f9b1fe0f5627. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QT3EX2482404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4b15e83601c6aa26825d48477bfbdceb0f9a599f9d75d9bb360759318bc6d9d. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QT3EY2468777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2480035a41e3dbd52364ce2aab017d06b1b04acfc3740d72dd7a533400e770f. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/QZK6F2501029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16adb50e8e35f8bd683d557fa41d8504ad8aa83f0c2d21d83f247b2d2b4f20d1. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZMEM2521017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba09e11a3dcdbc32f20393b0cd9d788866fcf02559bac8cafa9b88af16538e3b. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZK6F2572746.
Valkyrie Verses (The Mirror of Judgement)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa529f04f6cab4d10fbf3a689c792a3a5715c612be43bef89951b24753ebcac68. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T11:19:23Z), 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/QZWFF2524009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f04893f490dbc479053abc5273b080d63783fa6f95d53c7c79e4bf3eff2976f. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/QZZ7K2521182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6725e16a46db5b69a47160e8e76c67f234b3a5e83ef26a7f424d7acf411e237a. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZZ7T2589057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x653062c7c7d1f2e2fe07fb95741f29c202664d079f51097c2d74a28fa335b30c. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QT3F22577190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cfb4c8249218010ee04781320a66b7fd496c70ec62fe6d6d2ce2d45507fd82f. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/QT3FF2534546.