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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf33144f17a5167a11b1d67aa6d5a46ea74073e132c9c6d1c0ffa3d9e1d53361b. 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/25c2ce4b-b866-4094-be49-3537b24e51a9.json and https://artists.proofprofile.net/proofs/artist/25c2ce4b-b866-4094-be49-3537b24e51a9.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d7860796ab397679a32675f886cc67ac444f9a86282dcf81156fc81bd255322. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/FR6V80909778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd88711c6c98c45e1c61c41bdaa40e8aa53d126543d85501a3369ff585861cdcc. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/FR6V80909782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63559198aba587606dbf8b719c1d0516e1b6142e8a81456bc9e82f46e7a77de0. 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/FR6V80909783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e1259a6b27c0f2b18741f20d19b41c21d6ddc4ed8881869f813d8e879a51965. 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/FR6V80909784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cc8473832027342a011874015324d4906e59ca47efe90221aafc10914421c93. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/FR6V80909786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b56e313e8f45f377217adcb59860402764ad1f7b5c0a07a3d5705373d7e7b95. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/FR6V80909787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5c79eb5c584fd5c00c3ad4a01b8bd3d97bdb5d243e1dd4a386bafff22f5da14. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/FR6V80914101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07b11b0595eb0950451c87d21677fe5a433d49b18a95e792480be8ddff64329f. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/QZNWR2405019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20671d10bc63c3a9f5b65209b592255dce9e5d09547777107ee13982e17b94e9. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/QZNWR2405021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d31cd792ad16973d4e57f0a7fe6e7e11f6e816874897af075c50d7822ac4638. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QZNWR2405023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fca353660b296afbef697467694b9644643882d6bf3f97ce6dea6e244337943. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZNWR2405025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e431c5d7f28c8a7801852641aa4926380865904b2c2915a903abe205abc1f8f. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/QZNWR2405030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e8fd099f278205dc5693389cc879431d29919edb3ef5df8a931548c4c6eebd3. 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/QZNWR2405031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb478a4e004d802068aafc4e8f473ae3b5e46b91f258925bdda7622804bfda049. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/FR6V81010316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe8d7fc899f5adc409385692eea29c49c64c118130008102f09f25e1b44dc8ee. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/FR6V81010317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7b9649fe091ae8ac21e419ab3a4f3c682e28a4a9793a5921819250bb96ce2f9. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/QZES82474436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc24277a933b89116d463d72cdb44add92b998a041c491cc8050d12497e2a3ca. Chain 2 (Bitcoin): anchored in block 958963 (2026-07-21T04:02:02Z), 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/DEBL61071332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdde6936bc23eaafadfa21a0f070c7a6aef46ae1e1ae1bd70f20472170f580cfc. 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/DEBL61071339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd74109ee2d010fe2a741fdf68878b953045362eac7a41851f85f8f1c0a19e9da. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/DEBL61071340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8486335a8cd5ca7bc2e1075af61e3178715f5551501e8a7501dd3ab7eeb317bc. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/DEBL61071341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd22173f6e90704c037cc558648e9cef98f185eec40afbeceed63d445fa7b1b4. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/DEBL61071342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8773e0b8031ab973aa6e6bd46c40be6847715e8d1c7a78552c93aae92e5d544. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/DEBL61071345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x418520aa0078cbd2d137c193f116d2ccd438b865a1b5b5c23a95775785e0138d. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/QZK6N2461706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bc6b1d0fe011b2cf91835c92f5db9e8c206f4ad06011cc33a1b59ce343412fe. Chain 2 (Bitcoin): anchored in block 959013 (2026-07-21T13:39:11Z), 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/QZK6N2461707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f5d66d8aa3db17060a63bdc1b34d5181bcc27d9390612dc48e26427c0d251d4. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T13:52:01Z), 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/QZK6N2461708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2684639d0d699553477ef5534ce2b320c97d3f0a3f3d836efe70ebacfed766ec. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZK6N2461709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x341d87ab3978fd6d1370027911698b20f2502e337d7f24f67a2f6549f54928c5. Chain 2 (Bitcoin): anchored in block 958971 (2026-07-21T05:04:56Z), 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/QZK6N2461710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8e8bcd7312fa9d1b8368865d7640632365b058de2a0d5b31dec8fe29f50af9a. 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/QZK6N2461711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74215588b5b809076c7475624a6524f5327fdeefb2bb2cfe6a063838ed32f61c. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/QZK6N2463706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f56d67855f8acf45e38959c8ed80c000b926363f65fc9d7f674d7f2468a16cc. 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/QZK6N2463709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62d4c2b0c087945eab5f353aa43bbf441e5d2303a7cb30f239d1b6fdce94645e. Chain 2 (Bitcoin): anchored in block 958988 (2026-07-21T09:08:06Z), 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/QZK6N2493852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ab5bce8be19844bd9b2b4e1e6c88bf701fdc63a6b51f6ce4d1d791704322fa0. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/QZK6N2493853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x092fcd63d00195bbf46466f3f939c2b3cd3db88bec2edb8c64116d0c96c7511c. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/QZK6N2493854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6e7d910f38a9de659a41f063cf70cd5d8e331fe1d190cd498508da39725cfcd. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/QZK6N2477580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69292fd83ff8cdb71c29c54e1af71814cee14cc565e83dc99b70f377d1ce30e7. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/QZK6N2477582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79097cee7f9512dfaf932eb6cc844650601f1ea70ba5a912e66c2f5511cf5526. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/QZK6N2477583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc161a3c262d3b47d11406a836d960a11a6f8a4da729d10bc1866e476c074def5. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/FR6V82377200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe51c4617799e13827a191589e51dd0a3aab0b644faab6f12eef614f7d3874d61. 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/FR6V82377196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93a6cfaf2c6de416f449e1c3a8b92cda51c5c526f288af3affbbaddad8341f0e. 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/FR6V82377202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21b93e5936f9890ade3502ffa7c3decaac15389af8c17471f234133615f7ad4c. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/FR6V82377197.
Are You Ready for Midnight? Spot Ediction