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 0xb0b67f8bcd2fedc13aa30c3c9fd0eeb3579ea0b71a58c0d7c27b0323e7e3d022. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/98e30b15-9d75-470d-a930-a49b8e8cd72a.json and https://artists.proofprofile.net/proofs/artist/98e30b15-9d75-470d-a930-a49b8e8cd72a.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 0x67cfcef62f25d21d152483274526cd628372bf245142067914cf7642e28b0af3. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USHM22054429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74c69c438a11204b3bdc42e4cae07809b77a1869512c2c79d284675e62431ee8. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/USHM22054431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e7b845b59dce9d62adeede829fc54735076b428bdbadde5150be2a67e9660c5. 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/USL4Q1720657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x884ae656452d986cfc1f6333e9258d8f1f21c92f5978bc238c9114e4505f19b9. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USL4Q1720658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x898a32181f359b99616e85a10a8a7621cd2974c1695ac290616cbbc010a3cfdb. 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/USL4Q1720659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3db31b0000c8b715f2c4d409bcdb32b5e80cc269e7c723497749aee7828780c3. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USL4Q1720660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x278edc811b6fac59ea7301359b7989e86dd5e9ce88f838cd5a2be37ffee850c7. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USL4Q1720661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfff3ff4dd9d678155051e964f76d3852875175e55a05b9b876bc5cf95afb5e6. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USL4Q1720668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd78c4665562b01d185bba148d16a5ccd0dc0554ee8acb5641bef2f32bad98bb2. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/PEBQ91504896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2148baf86a43601125c6b753ac683478950c6a0097d0aa480b465f8338980c89. 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/PEBQ91504897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54a553dfa6f44cd327de4f53eeaf349bf67ae5d03d92b348fef5d430c90d08a2. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/PEBQ91504898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf12e9733c91bc48aeba9d4738648465561e1b259a2a74784ab4acfaaee462bab. 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/PEBQ91504904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeef8c879777cda4aca1ecd4880f085987cdcc181d1c3a6e856e7068d6576c23. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/PEBQ91504905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c5fdd94c1ee66919b45c129f116605dfe952315bc7854b977c34ec42f7d19ab. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/PEBQ91504907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f6a5c68e0218ec1238d9ce8ef47a264a7f34a7ea7fb03740c184e5f0337a673. 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/PEBQ91505049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd595dc94ad7f33b9491409132101e2c496257577ec1baf2e3e3d2b4a4075fe6b. 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/PEBQ91505050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f40968c0fe52c7b983366cbf67a5a4914076c63936c3717e6d9f19c902e9b7c. 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/PEBQ91505051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6358a876c1db3bf7a0bfe7d29a9ba264ff5cb91abe6467fbaeff85ea6a8d1961. 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/PEBQ91505053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x673b4c3db9456d35e764c9899e6402828ab71eb4db3b6c0debbc71ce7f612aae. 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/PEBQ91505054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93050872f0dd217f470be4788fbbac0d32f4d39bda3f30c0efb1a878400e1de1. 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/PEBQ91505056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1204937aacd08f9a1dfab81d992c2a24497b59c0955d32044e7fe415249815b1. 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/PEBQ91505057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60165b6484a93c00e97659b74a2a8861b0c16ee22cc2ade25c2a8ac000c2a954. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/PEBQ91505060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd78c4665562b01d185bba148d16a5ccd0dc0554ee8acb5641bef2f32bad98bb2. 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/PEBQ91504896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa14c294042b258bff840d25672db12bd72a2e661696034b7a735e02cb29cab66. 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/PEBQ91504899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16c464f093c58603b33b683e28f7b3f7e84d88a84d8dbd37c82f482d9a02d8c7. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/PEBQ91504906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf25f83c5301deda849a5e054c9d762b32807a391b2282b998d724ade3506a7fa. 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/PEBQ91504903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd5b0365105d1d89a25ee3465095892351930f6cfb545bf85c981199b64096bc. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USHM22000160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a91c3de68cbe89bee3f37fbe053f71ebeb55c64a0d7d9a5583b36df008815b4. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USHM22000161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c5fdd94c1ee66919b45c129f116605dfe952315bc7854b977c34ec42f7d19ab. 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/PEBQ91504907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf12e9733c91bc48aeba9d4738648465561e1b259a2a74784ab4acfaaee462bab. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/PEBQ91504904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aeef73c959e2050658db54a2900f88b11ade035fd0a9a2220aa1f1718fed34c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USHM22060754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe48a59699d6529c6ccbfb6ffc787a0fe88112ea050632983939c6909d3390b61. 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/GBSMU7606490.