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 0xa0dffdacecae22a2f0ea2535f3e8c913b78e0142529bfd342add5094d8249bdd. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8f1749eb-e4e6-49bd-b36f-a0fac3d22461.json and https://artists.proofprofile.net/proofs/artist/8f1749eb-e4e6-49bd-b36f-a0fac3d22461.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 0xb452f53625dac0c0a97dd6298c3bdde36a6a7d3fdf7edc57514ef7b8eaa088cd. 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/QZN882075629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69fa0e275df45cf5e0be124d369c9f4956f61c5a992f3dc34601a2b262e338ed. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T08:25:25Z), 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/QZN882102815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96bbf9935c3cfe42b53edb7b2b431f2b1b44bbec56bce0a9e8b83881e572df94. 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/QZWDW2209481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf3de4453fff8e36f3ea3388c96d2eb32a2979dc5d61304c6cf83416fefa1c12. 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/QZWDW2209482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9f05f2127ccb151f6d42bea009404cef7575c5cbc022aff83f6ab418c8221ed. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:05:41Z), 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/QZWDW2209483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7535fb9a23d73db1b0c31654ffd40cbb65ff38d49fa9d642f3f5385f083c310. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/QZWDW2220873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5051767d01c279edbd3914fbb99e627e18cecae0abd0dbed1a61054125df161e. 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/QZWDW2220874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x680832ee8c52a12f340037b53b6cee38b146917562f76a8c9a1bc52997facbaf. 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/QZWDW2220896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2953f85a7099c7748ae46ec4defd0d4bf6162f77c1a552906a5976d2b98b7fed. 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/QZWDW2220897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdeaebb41421ffacab5ff90de40093af302e5028c84552c7700c1c4a27f62dd6. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/QZWDW2220902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbded2210017241c41e4d6aae0a1e8f19bb7c6bd9881de28dc776b122615ea7c9. Chain 2 (Bitcoin): anchored in block 958920 (2026-07-20T21:02:13Z), 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/QZWDW2222310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8291e6b01a2c5da4d9a916124e8e8c78194a203313aed6b48de09060934ee7b1. 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/QZWDW2222311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf1b985a94ac9216203cf8e45021195f9cf59b1438aa5e42479650cf35c54d8e. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T04:55:44Z), 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/QZWDW2222315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43daa6c7623da377eadae823c0d7d8632cf918075ed4d53684ecbd91c3de03a4. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZWDW2222323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb6013fd19fc21645d4cc493e1b6c7cfd76758ab3149e3f6473b6c36afc4d5ca. Chain 2 (Bitcoin): anchored in block 957745 (2026-07-12T19:20:20Z), 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/QZWDW2222326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a57178e870cf663338823107e6d87bebe115af07b2f2ce65f88a436813f251e. 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/QZWDW2222283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa50db4c7c2eeb40c51e2883f86f5990aa07a2c9325d0f60b02341d4b5a229a37. 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/QZWDW2222284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a54f2c8d96d20763ff46874216ecc3ddd61de874545616e4b58fc233cb62216. 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/QZWDW2222285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x272134312f181ef40dceb6529d3e9b5c7bfc528492face8f10f72fe38bb815c1. 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/QZWDW2222287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc0e93aeeb5964a065edbd0ed6667674d6bc8aa17581aea5f64e3f93eb777e58. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/QZWDW2222404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4bf5d5a0f2fc03d7c60271d531d94de828d8b45b715d4b92c8ee5f7fc7269f2. 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/QZWDW2222405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe627e72a5123d61319b70f40bcc33309c6e5247fe5f3cfbca2c75f577a8052c. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/QZWDW2222406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf59771a7bc4a827c8241bd1d83a7f5d7efa6e70a72d8f39b9e2c5a618d460896. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:20:26Z), 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/QZWDW2222407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78746ded8324a39ceca15028d6058f74c4e579702540016b251f7d86b708cb6e. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QZWDW2223371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44f3d0bcddc3113842e64a10f213a78708dc0e63fb645f6e2253ccd7c97d0c33. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/GX53U2686882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x038b4ea86eea2f91f35c0fc99b8bee6f8b79c98a154d77d6014a61152ed4b6cb. 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/GX53U2686922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb511ec654bf7980c94b3d9a8070039777a430f961fe6cc6703d4d8de61b97f05. 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/GXHUT2550883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a9badbb3b1c7f9dcb6b7614948a1f3c1d4766bb25a5352307d3f7503d85b615. 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/GX53U2695818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81acc95a0b1b07fc383dc9c21870e13098e7c740f14301a43d05ead1b5491c5f. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/GX53U2695844.