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 0x86d877117be44cdb386b9691ba78e3903763c1fb12b2197909342b8dfec827b4. 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/9ae1fe42-8bc2-4318-a2d2-2a7f5c9a774f.json and https://artists.proofprofile.net/proofs/artist/9ae1fe42-8bc2-4318-a2d2-2a7f5c9a774f.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 0x731bcb3c8d0d61dad85c2e393589cd3453a68a8fb6e82201940a34dfaee6bf8e. 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/RUB861800187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1babdf331f9e04bc4430519ea1ddb7b9818cbf5ba034ef9ee578decc205a0be7. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:32:15Z), 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/RUB861800188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48baa76b0ad4a1b39b070886c11f44a707558195702afddc1ee7e620bb8a56ae. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/RUB861800189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3423f30405d363dc233dcb49803423f4f1060522a79677f762e0200081ac9b6. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/RUB861800190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb60492e70baf33d2f66ed9f93a4555ce8503732c6094c72b8d8b44be884d76c1. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/RUB861800191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6aeffc48f5e4c8988fb62de141b68067ad7a8640771e25433cbc04ebece918b. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/RUB861900315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf43c13e4e2a5ad6214ef28758f59fabe296ace73f2b71e5dd2b14efa050697aa. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/RUB861900317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3e70fb092515d658a62256f0796ee027111ac7138fcabfbb516dadeecabd52f. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/RUB861900318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e3e7dae8a9dd4bbb87e13528e12797dec48551a8756ea66289dc45f634d98ad. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/RUB861900319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfcd1062343ca39530c334b973cd24485ea75dc8cfceecfca6bd582371f0d03e. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/RUB861900320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe93b3b602f21a5e6c008aa8f8bbebb137ab410c6797e48f88b2e09cdf0b7fdaf. 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/RUB862100105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56c91873a20524d465f4ef9eaa8bfc3aa0eff6e94f9edac6f20adaa7dffe7b71. 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/RUB862100106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5f4052c6cf88b362aec413a2c30852fdc01b0ec656843940dc99c72a71a2ebf. 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/RUB862100107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7967ade3aafa8c97bbcdcc768331ec425a379ba69f466837938cc222adb9b759. 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/RUB862100108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75ce07c767bdfbf66dba65d3bf75fd150c91120efe2526e2cf2d2411c52ad5bc. 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/RUB862100074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd190b96da96187fc69cb4b91cf5fe4fdf352e962c5a5875835273f0d3d2251d. 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/RUB862100109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x804fe7493fcb8ce20babeeb26f9edcbfe31b0c2b5eb61627f72b9ff6677a5f22. 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/RUB862100110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3892352cc099c145ac00d169ab74ff52f653944393e65a5e1a6169551cd9da3e. 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/RUB862100111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4472ed42a5cb646ec0c095bf25a94d0f20ba5ff697c497232567ba9323073ed4. 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/RUB862100112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e0ca44f52c3f788055c56ce0a420fed2f0f3578b0a65aeaab0ae0a67a948afb. 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/RUB862000097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3892aa06d143f2931f4544bd066595b29953f0c61d9721bed88baa8b4394fdd9. 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/RUB862100113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8275c3b6f4cbee0efbed0ace36836545ff91e980920136425037464ad4937e3. 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/RUB862100114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x723c51c395e7fa1724ebef21d460906cca2ee4755d4d71f10ed19f6f554a39b3. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T14:02:57Z), 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/SMRUS0074273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c5634be117c3eec3eb8baec71abe70cd7ba3ae386a7983dbe12b31e40c999df. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T12:10:38Z), 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/SMRUS0074791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0af198405f332f3fcddaa3d4dfb5aaf8bf9f66ce1f2a1c38202039f6261d2142. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T09:49:15Z), 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/RUB862300046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd92021934bb10559b400a47bf8f4867a7aed026c8fb8eb036b8b8ec74fe3afa0. 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/RUB862300049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46ff5ca4873d9bcc1ef5c61e4bf7b1026bb13bb65fb2dab7346b9fc79a0db70b. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/RUB862300050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95a8b2eb992f33b71dce787a1974d315efbd2d520d723b55f13ed41b5fb6b6f3. 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/RUB862300053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x114e803499f973fc31d9ee9aec5074b2bf09f364927e3cd31a41e6f0caa12b0c. 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/RUB862300055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e0124dcf73c926709e60d74741004a861c50e2b7d8b0225ee2090f44a4b289c. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/RUB862300057.