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 0x38d7335965417981f41417b27e186a78cb812cad8705d6683d93b7dbd901938b. 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/85dc3827-592e-4672-9d6f-8cd4cc3b9636.json and https://artists.proofprofile.net/proofs/artist/85dc3827-592e-4672-9d6f-8cd4cc3b9636.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 0xb935d3bf05b87d8ef2452a14479a20fe8518b635666f3d34d12d4d1b30ee9f91. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T02:19:19Z), 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/GBLLT2041588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f2a63afa3b904103691c5934f3f053db236cd4b1c57421fcb27ba9ad32b8986. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZFYY2014702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b9a2abf12bdc62022fae986185c35403f7f17e3ca3c43d087e6fe59ff05b063. 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/QZSYP2104036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8322b0c57c018123938f046b08fdbc07c4b3e26f54ee8c83ea82208e299fdee. Chain 2 (Bitcoin): anchored in block 958691 (2026-07-19T07:19:31Z), 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/QZAKB2160333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dfe8007bce920b44688efdcfc294cf190777d5b50abfc135951fa1723f384d0. 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/QZPEW2424994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81f2d734464b3726d15fe77d6954c5a19e4fe032f3933b83b0f32cfda4133750. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:41:39Z), 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/TLVEM2404637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0707b768b0c92b1c80ce3d8efcd775be89a484a5c53926d3adce1ca0c4d7f356. 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/TLVEM2404638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfb7c1b9d215b9bb0a504c82fbfc4d574a33bab1711d394c2b3a389ea0899cb8. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/TLVEM2474125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd47efaa2967b6ba31386a567c685b52c2df2753b56896da94ac75bddd25f17a6. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZPEW2516946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e336d0ecf946bec2f94415ea4b21a60999926caf5e7a8b2f2a410fd8d4c0e3a. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZPEW2580453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7318dae25b62dab5e3b34072296176561ff421521aa256e279b5ee52cccb6170. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-17T00:12:17Z), 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/QZVEM2528999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ca6102e435674bf9cae11f89491c7d38883798e8dccea889f5b17cd1bbe8d69. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZVEM2574616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd689f44465082a52c0cdb41b8a330d28fc0d941dbf02ab56d11ad3977c3458c7. 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/QT4K52522887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b7ac733c955f7b18f5b9f26927d11c9dee79d861519002050e00b9d84027166. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZPEW2504065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83a7a642cf26615d209b099bbe9460d42634bdf5bc93f5a13ef52e36907194c6. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:35:31Z), 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/QT4K52524365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf416de655521db10c9f2117fe0b29afe6c733e19ba9584dcb9657b956a9b78a4. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GX3Q92097673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9c7801fd1383ede5efdd05409676b1d2caf810a31c69dc16279cb7bb0204c89. 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/QZNMZ2239026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc93817474f141395aab25038bfe3a7de98534f9e38b5e00f790b3f846dc227f. 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/QM24S2004751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc93817474f141395aab25038bfe3a7de98534f9e38b5e00f790b3f846dc227f. 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/QM24S2004751.