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 0x1043b1712e8ad55918098ad6027d202fc47527b99982870d889bc1fc393830ec. 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/5a445ff4-2cb4-4a17-a613-eb8b14cd48af.json and https://artists.proofprofile.net/proofs/artist/5a445ff4-2cb4-4a17-a613-eb8b14cd48af.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 0x46a414a315c79d1ad09b97876b1ca1724dd808569299347dedcae8348f58f5d1. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZK6G2215006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe02242fafd32a26223da7fefaff941ad64a4b5d5fdecec83740f02158c3e99ac. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZNWQ2391908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2db0fcbc6dcd437a20cc1c02c0ccb9653fe49bd8a70c7624e7ed2e981b98d0b6. 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/QZTB52309160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f98411b356d42575c2a09757a97b2b7b061b96c9f293f122fb78129c97aeff4. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:43:42Z), 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/QZTB52309161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x695ecda09fe97fd458e59d20a811f9637156836cb74b3d3cef413f476169778c. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/QZTB52309162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda962ec98bbf6b1fddd55e78d1f0188b105656effeaa7e47aea80a545f4079ca. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZTB52309163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50ed9898f10b699aeaaed2c9d04a9d05ef199821c1711836ad6972daecaf45d2. 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/QZTB52309164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc80334c55ecdd26b8ec11a1afd18611c2613bcd173c55a80f6c642849b0b3eec. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/QZTB52309165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27551e1aedf0d8c36eee359c63365ee6161b41bf96e0637f8b30a2699eed4995. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:23:05Z), 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/QZTB52309166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x431b9793c03cc9f548af704cbdb425b085e3813102a646a4872d14c255b46acf. 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/QZTB52309167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c04031ed1509bc7b739b19c2f7e46e5627c4ec7ea2fd7b7efca7671b0cc4243. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZES82494670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d03e3fc5a4a4594e6dbfe456da84bc955b26fc63f4e0bfb56faf4b2dc271117. 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/QZES82494671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea14b1fd9b9f6bc55c5a50acfaf47794071fc8c01f8ee7b6ebda040848a7a14c. 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/QZES82494672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x572d85c6cc794a7b6371920a99666a11218b7ca86c933f54090673614d90a12b. 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/QZES82494673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5db8b9721cf3d8e69b26bb916a3fad23a7a6381e152e388ef43547bfc5de99f. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T15:41:23Z), 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/QZES82494674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5f1bef58440eaf4cf6c332ad18d4e477cdf67bdf0249a0a69ccdc98f4e06967. 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/QZES82494675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea2a3623685d34f4510b1d84b6b980e8f494a581ac54c1391ed59f050f97ed5d. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/QZES82494676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd9b485b4dd169565f7b383ba54c9c26bb05c9276b6c61d3d1a4e5ff9adb1052. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:56:04Z), 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/QZES82494677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7efef0e322ff1cf722111e3fe831af25a78be99d716375cdb79369c9220f5816. 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/QZES82494678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc305e558b29445a1271695659d750eba97386f6e840e800569ab7423addabdd3. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZES82494679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61f3dd1f60de9f36c370da2cdced62761fb1c873b3d86716def008ac02f7ad3c. Chain 2 (Bitcoin): anchored in block 958776 (2026-07-19T20:11:59Z), 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/QZK6J2511010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31ff1dc51af0ebf04e53357126d66c2c841f4403a1ab6ba1e8fac2926b71dac9. 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/QZK6J2511011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33a6b13edc11ed2c1dbccde75db0d83418e595b6cb6c8d9bec7f62056b6f5ca4. 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/QZHN42500239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf05c77069808be024c73ac8952f9ee013a9c26f8ef2a34416e0edd3be0292023. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:42:13Z), 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/QZK6J2511013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6348abc3fb0e749003529cbe0a701e5ca774fbe03ac5d908f03ceca38b0aeab. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:18:10Z), 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/QZK6J2511014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8c382e9666835a865a0db6d52bafdeb5cb55092efa39ff9f4688d3aff69538a. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:52:55Z), 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/QZK6J2511015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8b0e2f1cc1871f7e0c9b35e9a3e8e2d07542754255792755edb66c2a63224e7. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:44:19Z), 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/QZK6J2511016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x433b8ad700ee802a43efb010d9d2853f321714125def6ab8ce0a9e0890060720. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZK6J2511017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8e9465558f4bcd9a9ded374dcdb767fe319b0ac3316b75366736de2f66a470d. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:06:54Z), 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/QZK6J2511018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3a4f61828d64d02dd79bf6e8d82fcecaf8c834c17043306d783f754245c18af. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:38:57Z), 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/QZK6J2511019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee6fb51144f21296588a8ebac03c2302a46bc9da5ebc38f26bf444dad36eb64c. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:47:44Z), 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/QZWFH2472465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde199d2602972a0ef00ef1cf620ef2001ff255ae9e9c9765b07514f90033426e. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/QZK6J2511021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64e4ea74f9461450a9480f5fb0fa0f7e4dac8e2e236a19d7b1be0b570320b42e. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:20:30Z), 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/QZNWT2531603.