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 0x8aed8f27a6adea1944aac7868174172d059fc6963e3f731a5527ad00b25ca05a. 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/bc415340-2208-433d-bbc0-5441dc5c85dd.json and https://artists.proofprofile.net/proofs/artist/bc415340-2208-433d-bbc0-5441dc5c85dd.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 0x4c8f8634782b2b47b034dbbd5da92169ae77dd5eb883f36d1d3016629522a93c. 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/TCADW1879727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98276de74a1b04d7de04fdac4f93960ac7c704edd6d66103f13e8be3cb803f7a. 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/TCADW1879730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd0424772a44da911a47ffbbeaa7fce5c26131bfcda2a414305693f0ab2f944a. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/TCADW1879733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73cd137098336c3bddd9a9a8d7eeb8d23d9f897a48c08d2833b5129f4c19b188. 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/TCADW1879735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x364d012d7922e20090bcf7bb93cb074f9c98c4e2889f3693b97e9c1b6890a525. 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/TCADW1879736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde1e862bf8f7678abc8512ba0f22f2e10d6fa26b167e8ccd59a7950216d36443. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:09:51Z), 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/TCADW1879748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x748a0bc3fa0e9f54c5fe1399540793d346e00e33d73f172c25f8278a2f9cf9fe. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:08:43Z), 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/TCADW1879749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12a4bdeff64a4b132796f9f34a1ad9a793e92a2facfd4cb558ab74eda13f70d6. 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/TCADW1879751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc037e2b1b7e7f0257605f83a0532857cc92d1051c5f2b8c1a7351ea630104a6b. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/TCADW1879752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f086cc9addad34de685b44463332314289799b7ca7be879d8d7e91aa6b66d31. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/TCADW1879759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb297bacade6563097a743e9dcf2730f8bcb32a633ff6fa98b347db4922ebb4bf. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T03:45:56Z), 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/TCADW1879760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff13d80c88f44c41e71270494276ecadede6b86e634cbd052c571197ef56214e. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:28:47Z), 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/TCADW1879764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x563e1f6af367f4d6ee7114417c6f229dd0c15ab56e00a1ce77ac570a3d57d385. 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/TCADW1879765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6748c74d98fe20b2acc36e8fc0477634bfcee0746a4d4b1fe381004fc51f591. 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/TCADW1879771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c5243ed80ef885f1f38d0d2a63018450af55943d21e4c646e742018556496d8. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/TCADW1879772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c9e88ba702833f75686680454af85416e1164c5e0d79b40777bfde7144c1134. 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/TCADW1879775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb526dc600f5aaa655f841027a1430171b30806f1663ddc148d1a0b0a86e845dc. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/TCADW1879776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f33ead2ac07b7d809f5d77f5f0e4d449e55892dea9f3ccde856d87f2b3226de. Chain 2 (Bitcoin): anchored in block 958706 (2026-07-19T08:50:34Z), 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/TCADW1879779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d0cd0f80aff73f7cef26be471b548f5bbf849e2052e571045aaf64c75c3170a. 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/TCADW1879782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2172b27ba09fae9d05416e4c83c61ed2375e25854276bd1e50a04a577a9b8442. 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/TCADW1879785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c9d90fd40a34251a46cc7c279424048bed16b21f6c1544b8cbc443ff2ced9dc. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/TCADW1879786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4feeb30f171e2e7f16d4e7fbce245d4d32721ff1f000f7040b8c4f0663794b9. 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/TCADW1879793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd010a962585eb5fe1230ee79cd6dbb13cdb21643b6b07919aa1332bcec03c68b. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T02:07:28Z), 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/TCADW1879795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18f6d8b3cb0424de124903b64b894898a423ec4a9fbccea0e4caea366cd8d18c. 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/TCADW1879798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc89f9b763c006dfb1f982adedcd1b2bbafa9c9ad7c07608321383c44e91e5235. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:36:46Z), 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/TCADW1879801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08205dab73f51df797bd3e70498cd6a4d4e9acc3dadfbb2c55bdf020b72f7ae6. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:04:24Z), 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/TCADW1879802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a4a744600561483c3f73c51e8be5730b6f4427847a01381bfa9663d9a926cc1. Chain 2 (Bitcoin): anchored in block 957671 (2026-07-12T07:35:31Z), 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/TCADW1879807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25b1801b26111d6d12a2cb6cd4bb440e248b82153e4b2cea61e635404d708e8f. 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/TCADW1879824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82c3ed07fd9dfab049b71883b1b81b82c43bd87b7cd50614aac41904d186f891. 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/TCADW1879826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3f9d7a6beb976898d0b8c155e0800762eff7ebe0474360176ccb47096110bf8. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T03:52:20Z), 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/TCADW1879829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c5db7cd627cc2c84639c12f846517780236857ee26e485b9f626c94b09cc629. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/TCADW1879832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86fb15694ef51b531b108fe75d5871b38b8fbbac6cd69215ab11e0b09222370c. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/TCADW1879836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc271388b51e721870d468f0f5daab0d560446d3ed051d149b2c4ee48d134018c. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:03:39Z), 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/TCADW1879839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29d4fb51e7722ae4e9666b39aca6c7296779d095d7f045e38a5b2dd6e1308368. 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/TCADW1879843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x866534edeee1c5ba7ba5152fe6f1db33dac443377ecaececd7b825cbd6f9ec4c. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/TCADW1879848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed7d0e9f65aea019f0eee4524001a30c28fa0b886d710175975b8fc3402e0d47. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:49:54Z), 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/TCADW1879856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa12dc0c6ccd7332e86334b83d4d8765a47d9b25aac8cae77d594fd5d263422c1. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/TCADW1879862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaab76bf5520abfcf0f10a534aca096d4af5ddaa77833d210643d8dc9ccd7f5a9. 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/TCADW1879871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec46f4fcef2c6b1bbd31f69713d1b643f97331cdec3acfe8fbb0b672efa72cef. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T23:07:42Z), 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/TCADW1879877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc0a7d33c4221c19bec809fbfa8b06225d2d34b04110a28bbfc931805f4a45b7. Chain 2 (Bitcoin): anchored in block 957671 (2026-07-12T07:35:31Z), 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/TCADW1879892.