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 0xe26f5f7820e594f0d3f25976af47d4b6ba61156a6d785ee508a21596bf53758e. Chain 2 (Bitcoin): anchored in block 953645 (2026-06-14T14:31:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3dfe2022-1fc5-441a-ac2a-fbacc0844eab.json and https://artists.proofprofile.net/proofs/artist/3dfe2022-1fc5-441a-ac2a-fbacc0844eab.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 0xb0ba9a8cc3dca6d337763d4f1a195819a077a6403e5e9a11dfcd10608b8e1e69. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USSK32142794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f1b34dd5c8e9a428905b71b4b8b13b72ba97b7b5848d828bacf886e894c7870. 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/USSK32142789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2f6bca4c59cf55ef764a513aaf60a7a6aeeafdbc771f1b3588d9ab6e2edfc82. 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/USSK32142791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67eb3a614b5bb9291527beaf26a7d7098a17d18636a3de50d328f576f90a0fdc. 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/USSK32142793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0ba9a8cc3dca6d337763d4f1a195819a077a6403e5e9a11dfcd10608b8e1e69. 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/USSK32142794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b0ae919e03286eab7395ec84ef796e7a2b6f1d4185a3b73206aaacf04053047. 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/USSK32142797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x516841ff6605e660489afc18e6184d2b4b8a238f68d8d0b9a4b0d1ebaa6743ad. 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/USSK32142798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd1e8253a23c8dc2a55ec40d7b68f49d1f5c8c490c811b89d9c19ca80d2b9205. 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/USSK32142804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x595ca099f2d1bd89700c19db1cfe5048e969d52cc20fc9bef7935d2c2d50b612. 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/USSK32142808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44629352af9286eb2181f65a02ef10d5a6c89902402044473fde896fc5943fd8. 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/USSK32142812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee911f2f5a658b84098f3a12c641896d56d5186545e3431f579610a692edc7d2. 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/USSK32142814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ecc3609746d4adcefb8051915f79fc1ebecd7b3e9860ab34571a6d2b687ba59. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USSK32142824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1114b5a179ba44707298b1022d1449ad0055beb7a96d20e3d5db7d07b0a4ee84. 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/USSK32142825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e6392e5c691f4e13cb289634c39af522b7b134539b5339188fbb4844069ed99. 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/USSK32142846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1c2895e2bea957beeb97e781b257378d5fd5bb926a41fd0b986d09cc5d3c0b7. 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/USSK32142803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0ba9a8cc3dca6d337763d4f1a195819a077a6403e5e9a11dfcd10608b8e1e69. 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/USSK32142794.
Tightrope Walker / Mountain Climber / Me
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2f6bca4c59cf55ef764a513aaf60a7a6aeeafdbc771f1b3588d9ab6e2edfc82. 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/USSK32142791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0ba9a8cc3dca6d337763d4f1a195819a077a6403e5e9a11dfcd10608b8e1e69. 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/USSK32142794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0532d185f8829481be320f38bd290da512578af0212436f708072e5bafeb02c5. 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/USSK31391392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99c952c88b593c855dde5b4b2717ded452775f6a8cb276b0f961936357f3e43e. 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/USSK31391396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb9272c2e29d18bdd6ce9de545f5bc8dfbbaa8c4ce40b0a41fd4cbd51b1a9962. 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/USSK31391402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91e941250784b095114e7dc53c1f30a43aaed83a255236056649ee541ac14fcd. 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/USSK31391404.