1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x8159c452ee0122469e48cc40ace0d63a8f2c35dfada62199fde7702f39d6ecaa. 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/c31582eb-8491-49fb-ba84-91036fabf158.json and https://artists.proofprofile.net/proofs/artist/c31582eb-8491-49fb-ba84-91036fabf158.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 → block OTSBitcoinBlock must exist at that height 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 0x4b26fbd474d8099511989ee19021fe2a6c93b6d0f1b951e8c726dd7de3baa109. 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/NLG6Y2400037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88a76d153854245cb33372bab793209edab34c2f1a131f414bfbe5c503eb7329. 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/NLG6Y2400040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9da28ed707b9923ba3c28b0137f1249bbfee2c147fa12e1c970d4cdfa53500c. 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/NLG6Y2400041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbfab980df56dc6b99a5018fffd9834a45ea4d4661223634c0a090d4707511bf. 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/NLG6Y2400042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d98abcf7cd9776139e296cca4f2e238dfc415b624d8b892a3029671556bd4b5. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/NLG6Y2400043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x388da753057b4e7c7680bb7bc67abd9e639d30e81d8e9e07894257f155bfc1c7. 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/NLG6Y2400143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7a9761d00590526e80645f15c47753b3c5cba8f076be96781a6a51cda375ea7. 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/NLG6Y2400145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc99882f9d9be958754f7cf4f3f04236c0fb2b412782d79a78aa8044b8be0990a. 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/NLG6Y2400149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7b11c5bd662abb05d716138c57c4dd28e4b005c757432b7818058d9878239d6. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:23:49Z), 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/NLG6Y2400155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bf5e4ec5417aee25a1a0cc4d903b3438d3ca797157bf800a7238c6e15343290. 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/NLG6Y2400180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a18ba4aeedc3519dacc098f25dc1e245123fa73a58fce364c96add8e2632ebd. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:53:21Z), 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/NLG6Y2400181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96ae9487060bda5b63272280a3326e953b9c7d493bfefdf5a4ff21d78612fee8. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/NLG6Y2400191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb94574766f98c834eaab9cc5582044df31a1a1f66ace166b91aff705318c7a96. 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/NLG6Y2400187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b1cf046256effcb6471d9f7c56431f3d8ba2e9df5c1774ef41428856808f0c1. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/NLG6Y2500029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b52604e01f49442f3d306c358adc7d5556d901ffb48c31bc7b9f60a2a77add6. 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/NLG6Y2500024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc749692922ddbcce1cf59cb193000643ffc5982c909582f6283c968bf2ba5630. 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/NLG6Y2500030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4182366f477b5bfc19cbc83d0431060c8087b81c8fb05d66a8dcb58d1416f714. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:18:51Z), 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/NLG6Y2500127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff4ff08e39a2d6b08b61649106437b3d3106a62f97dcf72a9a788715b521a988. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/NLG6Y2500134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe226ca312d715d6d598b605f3ff3a71834f3f60c92f2db9e11deb01bece8f298. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:26:51Z), 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/NLG6Y2500136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c1e23e523fa18cfb1dd037c765b43f14f1698b4bbd43cbcbf557722bb19c9f1. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/NLG6Y2500137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd98e5bfef42121b083ed09b192666d4a8c0854e890737072ad5bd942c14a0281. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:45:03Z), 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/NLG6Y2500140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6c65bb3e896618b9abd45d35ee36766bcb1a9cdca2808318f5dea2a2033ae48. 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/NLG6Y2500144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b63a3e892b7a932ab3c33edaf003aaa9cad96d36c3932c3961d13e585bd155c. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:08:05Z), 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/NLG6Y2500145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ded0ba705087185cba38b6791149411155b1ac8a927e8ffe5470ad7dda2cdef. 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/NLG6Y2500147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48d1440bad9eafbcda88ad93775d1d662938782feafe2e463e30f820c8e0b4c0. 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/NLG6Y2500148.