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 0x6b15c8fc87a11b55292d6896f86d039d2bb1259e884443470a21969eaf74183f. 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/c476a6bc-c428-4044-8e14-cf6c0aae56e4.json and https://artists.proofprofile.net/proofs/artist/c476a6bc-c428-4044-8e14-cf6c0aae56e4.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 0x334fe3f74e62b2b685cd9de91e5549125a358f0eed8126beaf708f86332809e2. 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/CH6542189327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x472647929bbf4cbd566dd756060c9311ed97ae56f7f5c0d94754f2fb25cfcf85. 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/DELJ81961075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa769517b4888a1033fa701e6e345d3b5ad9f842516154214b0d4d2e079e694b. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/DEYX82131659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc5b5e5ebdfd030c4512d8fbad778a6f6adae0215574f16953a54878cedf2cd0. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/DEU192400164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2367a739b6677c5b6fafac629fa2bcf25bbc07da4f1916721769c0afd1972e99. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:19:47Z), 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/DEU192400177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31c3829886e0ff77ce3c5c8d4258051af6231ce105f4b68597707862e8081c82. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DEU192400163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc5b5e5ebdfd030c4512d8fbad778a6f6adae0215574f16953a54878cedf2cd0. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DEU192400164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09cc621fd34c872daa1e7c5f89b44a308f62421e03c1808d24d212792b43ade7. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/DEU192400162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31c3829886e0ff77ce3c5c8d4258051af6231ce105f4b68597707862e8081c82. 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/DEU192400163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc5b5e5ebdfd030c4512d8fbad778a6f6adae0215574f16953a54878cedf2cd0. 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/DEU192400164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x472647929bbf4cbd566dd756060c9311ed97ae56f7f5c0d94754f2fb25cfcf85. 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/DELJ81961075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x738b1981fe7c82651c78e3ce0bfdeb4cde708a594afda1dbac4b34c3ffb1b11c. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/DEYX82131660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd40aafeee6df76e320d7935122bdcbb9db35f14b90d39a2d2e803d2926a1dc2. 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/DEU192400176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2367a739b6677c5b6fafac629fa2bcf25bbc07da4f1916721769c0afd1972e99. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:50:24Z), 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/DEU192400177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0be68712476260243cc6eccb35a5350f5e1fe43f84988e628fb511a867ff7ee. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/DEYX82130503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7dc86912b7d727e0f81f83631feee6400cc78c30c84b8b514184e41c328aaf2. 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/DEYX82130509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa769517b4888a1033fa701e6e345d3b5ad9f842516154214b0d4d2e079e694b. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/DEYX82131659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b5b46b8a395607967938a3b42d908f38d6c44bc36cee2776a0a7693af7c9b44. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/DEYW82504561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x310601ada04156bd6329da5077458d4021afa0da61337f5e3550660413199f8a. 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/DEYW82504562.