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 0x431a82664510611236ecc0cfcdc8d28f0876de45442d221040f5309b543927a3. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/90732daf-6871-4a45-843f-4ca6d119f269.json and https://artists.proofprofile.net/proofs/artist/90732daf-6871-4a45-843f-4ca6d119f269.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 0x1f76dbb73f93d9624ad64d6844d555c59adb9612fb707a5b6346d23602a56665. 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/CH6542437288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc792b18175dffdf7626b6d63911cee699fa64499bdf419ec6f6e62ea14fa6e98. 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/CH6542437289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5229c38b4094043038f04feb08fc2b21abf29f8e7f67140ef1e9a2475424ee3. 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/CH6542437290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26accd8fac2c0ca240c57542f9d0f9e83f2511ae57055d9fe4c14bbd9461f0a7. 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/CH6542437291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x979a85b4312540a6a72d4311b5192499d86ec326e9ccfef88b6c698229a3be16. 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/CH6542437292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bd360bfe03baac0a3069cdddf9aafb84c7ec38b9da9d1147ca8c9680a51c0f4. 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/CH6542437294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcd17371a3709fa41b4e275d407bc622b75e5fcfe856180a4d43646c800a6225. 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/CH6542437295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2322637f9578826a22256506ccaeabac1ae90e0ccd5655faf015235bc0db024f. 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/CH6542437297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa58d01484932d8723bae3331940cb966a8c7f9e1a65de04e804b6c0531bd0c8e. 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/CH6542437298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedd0f1fcb8607e9f8f69dcbf9a88b2248f4640c3934f494fad703cf3ab3f9e47. 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/CH6542437299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb0c8b93b96e0fd88ac79b623ae6347ec6449f22e43dc82c7b6806b9a65cebe6. 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/CH6542437301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd596a101d82daab4c38ea8c855c8af734ab2858eba1239180da71b9c284b390. Chain 2 (Bitcoin): anchored in block 958041 (2026-07-14T18:13:17Z), 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/CH6542437302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95e470b617645e4c40c5d338e8dc854cbd6c832a9114d288b7eb69d729856e75. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/CH6542437303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x645cd318b7238f3a20ab92ebd93952158737a146543d2be83ad704a0859aca7d. 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/CH6542437304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4dedb50987bc7e6908ccd1c961ee92a999594514d4fd2813f3c5063abae27f3. 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/CH6542437305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d33db233bd2fe594bb1caa3eb0feb3b94aab0fbcf13060fc64589b77956d97a. 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/CH6542437306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5021d930bc436cdf4a24d0e54cb2f9d790a976f29c298273765c17772184c2ce. 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/CH6542437307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1bc34db850fbbf40f8732c8dc328e36c3f5912e4f4d26c1e254bcaa6f723297. 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/CH6542437308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17928d06fa6bd83170afef65210c60f3bc925e79451d3a3c348c6af4178ebd49. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/CH6542437309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6b47d1264277dbd9dbf41d06d65f8fbdb8d815a9e449c4d4e194bbab5110d5f. 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/FRIDO2314084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa61ee207925cc20d5209343d903ee52e7a565ae99fd7e9bca12a99bd62f9fdbd. 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/FRIDO2314086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeccd7286cab7dc72a2a0a66e373aa548dc9ef8a81aaf647da14fceff9a38aee. 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/FRIDO2314088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d1b44cf8980f6506706c8a40974f860a5b3897c25b33f232bf5bd714266624c. 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/FRIDO2314089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe94f7a2efd1181fd3c226250e2127160b9c7e4e1e227c92425fed19758c0584e. 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/FRIDO2314090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b67b158b52ca7e75c07c65f462930963efcb525921c688c1a794fe46f2b8ac2. 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/FRIDO2313665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09a9bcbbfa3b58516f1a8c4689e78bad39026939c43c932335b3e5775a0bf98e. 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/FRIDO2311026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x314c21d3a7ee69d53763f3aa6d7e2f3a3e52e33625b9edc16c972206cb2474db. 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/FRIDO2311029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09a9bcbbfa3b58516f1a8c4689e78bad39026939c43c932335b3e5775a0bf98e. 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/FRIDO2311026.
$inguli​è​rement V​ô​tre (​É​dition Haché & Viss​é​)