1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x629a5395637c4d8ccb4fbeb7b81651773da2f1bf51f0a4789cf9a8131affc955. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1b21a593-04c8-4ad3-8261-5988b081778a.json and https://artists.proofprofile.net/proofs/artist/1b21a593-04c8-4ad3-8261-5988b081778a.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 → block OTSBitcoinBlock must exist at that height 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 0xa50d13ca37f61b52d0a28c547f542457b64e23fec9a21d508d92d49297c1e0ea. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GBLFP2118668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x916124a0875e7e6fbac0b093422fd1a95305dca86a65f9433d3ba69e6564c90b. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/QZTAX2239588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe71507f34cebb5d2eb527c1f13b5099dc88f1fc326209b88d1c6302319f0c95d. 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/UKXN22092713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cef45c020724e9a095aa2ce6896aae5c9e8f9626bf23cf2840f4d1c6f8f0cc2. 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/GBLFP2488763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33f3c40485e11e160fcbada3def7072fde6fd2eca79a05b84c7a0ee066137524. 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/GBLFP2324693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4255589ffaa49b9c528c13ed3482a425eef63a3fbd90d811e9ba4ab872275950. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBLFP2278784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1996af46fc610054840ee2118b18272d4e20b5d97d495092c43e5b2ce56c6327. 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/AUBEC2164642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4779b52f33cce8728af40fec48c782bea8ed4f2881c068f46de05cdeffc7eee. 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/GX3Q92133671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x789052dc8d1eee694e902afad1e34a77c9d9dd75284106d60f8c0c9528a276f6. 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/GBMA22143594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bf76d5b9a9efbf2a0bc1ef51aa0d2af723d7e63692fc25fa394680bbc86482c. 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/CA5KR2162868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7da49845ad80183c7493e23e895977d422d42f9dcc186562efb51630a291bb6. 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/GBKQU2036776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28eb27f6bf400d8ccdb5272c9d3d0dc4a0842820c27c13f0b3448f98eb96bf75. 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/GBKQU2036778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6411ac8521c1205cc0331469e37933fb3e67afdf54ba78270a2abe44808b6480. 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/GBKQU2036780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcd14f625363a3586b037283ba12c785f8b59812634f77faf5199793bd9c7092. 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/GBKQU2036783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf528766b0585713bfeb2e4bc9baa243cffc638d2774a800e4f4849135494c88. 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/GBKQU2036785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dc13d2fcf63a86604ae253effd363a3b0edc5dc0870c63fb0dd22f556e24d21. 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/CYA112000640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x701d36c9aa7215bcbb24b3bc2a608243a87c7bb0e5e8efb5c6c82e52e37c9ea8. 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/CYA112000637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee076104b7ad419c654197e96d7f61c603eb30722f19e3d256d98bc66b09179a. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/CYA112000658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bcc419e4ea12e086b4fd233897e452560e1b3ed39be021dc448fb116f8e9d7e. 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/CYA112000652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99c02f65678a7068d9b4202485aa28417a696f8ae936e58a73f82cece397ab4a. 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/CYA112000646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3e0d3f8bc4124a5acc7608898d21942c48116c45c946c09cf027149b0e121cc. 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/CYA112000648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba64cb71b1b70353867b63e7ce8a6885ce5564877c613b4eef15706b503ce28b. 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/GBLV62022786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x137274ae634c4f17d8a974a90a2c759ceacafb9046fc51a3b25b3142a2cb819a. 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/GBLV62022788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd91d5631f6cbf55fc1b939c8c136414ce87349a29248416b7cd178c1dc873bfa. 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/GBLV62004480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd5379e4bfc72f5e03a2d6aaacca0d6916289524dc34e2079d72416785349f1f. 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/GBKQU1980845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62b4e719ddd1f542b228aaaf68ee8229c04688fcf5f516f7cb390c2f8efdcce1. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GX53U2431968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5da4c6273c7b23a05e63fa5113e1f97ee1665e556b6e0ceb5784464e5f12eed. 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/GX53U2459716.