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 0xc6e59601a32cb6a0b9cb812b6ecdcfc0a07a91f378213e8b05efad8ee3b25f3e. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0e1c9a22-6395-4b7a-97a8-c01109e8c2a8.json and https://artists.proofprofile.net/proofs/artist/0e1c9a22-6395-4b7a-97a8-c01109e8c2a8.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 0x47fcea2a3ec791506019ffb523cf9b6d8f2327a94bfdf90fd962801b39ebf432. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/GX8KD2296550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c5b4e2d13a1fd81bc291abb00412b4a0254d8cd000093c31331f9c6d43a4f3b. 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/GX8KD2282297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05263b981d8fdcee6f6e3983bc35985ab6dd49cfd2f185e03cf3dae11d6e8008. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/GX8KD2299786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dd7d793f94b6d2be63c58dc1e092e6f50ec229ef8744a728f64eac891f7b84e. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/GX8KD2284728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa89c8743d16b19b20d6364971a721160997249bf67e2c3f9cf5861029c442028. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/GX8KD2280653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd57880da4414b03b53a7b0431c430b6119ed75c195276d013d2b35b9d0c46999. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:46:09Z), 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/GX8KD2292492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b80a63ac9f37b5f1aa439c03171a9ad1e7e4e5040fad7ec2323c93cfd4c9765. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/GX8KD2298237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22202f8f53a3682fc8784fad25bd37fba9e550e1cc17ea3e87cd40619c3214db. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:41:40Z), 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/GX8LD2208324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7885a2e61a7e4968ed2d5d225bffc03a963362a927433b48bd3f5f18ce6b35aa. 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/GX8LD2244168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57addd73da2a277d94e06cf78e79741c6514db60a7a18335e1ac1bd256d52ad9. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GX8LD2210279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d8f92647b58060142d5671b819ac54fc0b420404b324d1e7a0aaaed0205663d. 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/GX8LD2212302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02f3a721119019ea2617185f89b182e618d417c26374aa48dbcfffe94055967f. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GX8LD2230988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f09eab75869275f1235d41f4bdafb0b3a3a8b78a0f4ac3b29fbf728f5f0ac9a. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/GX8LD2298891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf6a502e505210eada2d5a3c9c154c82d85aac52b05b910b9e216d6f002bfe13. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GX8LD2236118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3e04abf1b290bc948dce46de5125b6f232c7d93c3cdd7fd5fd664263e7f7cad. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/GX8LD2255237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9e695d4feb922953e84957517cdbc14fe988d5b995f93848044121743ed90f5. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/GX8LD2287909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f79fd09192c54ce9d1b3bf12151d03f4fb7206f45aa091106ed68e4a1a112db. 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/GX8LD2215758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0deb542bc3784445eec387af96417eb055c76411e8c07c5d207d277494f69605. 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/GX8LD2251550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52027f6dd3efbdd5e13859fc4ef21018e4af64d3560df6599ee371b56951b680. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/GX8LD2271671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaea6b5fe3641d1fa5c088af9693dfbd60ee9b4fda628d25a1338b06e374730ff. 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/GX8LD2294252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf171d0d6b01d6dddd1b8007cf5f342a1392042f62e5005448d2a974f7fced559. 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/GX8LD2238969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b60e71ccf172dbb2d9a1e3bf23924f5e9240a76f99e407bc94f1250b83400b5. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/GX8KD2354036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x650187d5115eb99cd5ad4c2eb53f1d8ca2fe43f1502c92a7ba6831b9310225f4. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/GX8KD2320521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd0b74ad7f9e5690218fae46ec9703c6d9dc9e3d44e2ad739a0e59885c7329d0. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/GX8KD2322710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99f62cf881ac1385e5e289375c77519c6e2dfec7cdd8e71df1c6df7510ba2ee4. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/GX8KD2321090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73baaa9e5dae244a4c3d8b80684c5341ea1c16ac78759de8ffd999a0cfd3b118. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/GX8KD2314497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d5d06f9e791e6b496a49b549e0f199cdb1643686a1c7e42f3af17ec25d1a167. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T18:50:02Z), 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/GX8KD2387375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc19da5cb4b325ba3bcd0fb39b0e83d5b79f46ba4a18d500be381d938f2105f1a. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/GX8KD2320037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffa2e1dd3a70a85733f32c288a35772dcc80977e7c698f86aae249c13b14dcc9. 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/GX8LE2373438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce0251bd92065941c6b87eb056440c6a11b06dc00f2cbc0a3427c56dac341a7f. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:24:48Z), 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/GX8LE2329626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4f820e5a1a94ff6ca4e4d5e60b5bf6256d4ce56a85b49e62b5d44a380bfbca9. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GX8LE2304399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa57ea443bd8f522f10a73ac24ea01fcb0872f4e52df7f25e23b630a02915d29b. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/GX8LE2333981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb5b2b1fd02a3a6ca687ebbf4ad1c983f46701433e3b144fb73027d84738a70f. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/GX8LE2354988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55ff4ff440a3df9c4877db50ffbc1df8248cd96681a3d9f3145181340a2fd076. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:46:15Z), 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/GX8LE2309370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa17fac46e17b3f4a260da8072657a376ffdf43867633a6e3dd8903477e9c0ea7. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/GX8LE2315034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8edd3d8b05d5baa6447a6e556e1deb40444aad50b3164009e9f8088b253b4c4b. 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/GX8LE2356599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef0d8dbe2c287da633748f1491e184884dde99f7ba706eca320abf64c1c28dd0. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:36:56Z), 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/GX3HH2336155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x265b2cb047dba2ab096eb5b1bb5c561933c1673c63d0c1304085ed8edbf3b923. 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/GXBDS2334959.