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 0x3d35c38396e999e45337eeb7ae4fba84f6a203a2129f36198baee28cec20f9b4. 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/0fe8a236-83bc-4d97-aeea-234d65b73f0f.json and https://artists.proofprofile.net/proofs/artist/0fe8a236-83bc-4d97-aeea-234d65b73f0f.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 0x1ac1b49e0b84c5ca4db830a15916b8aace432514cbb0a13b33d395df1a463a9a. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/FRX281743518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x622d2f13fa2d3160c092eedec74ff72620537a4a17dff5bdaf0e5d0c4e47ef80. 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/FR10S1895871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc304b986a28739b0ea73beff1d641dc07c67d90ab7c4ad4f1f0d27a94d45d46. 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/FRX201842601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f14550b5e568abebe5a090bdc0e567db6876da195343d55dd686c161bceef4f. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/FR6Q11900040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7131dd6a6ce8180ae957f5b9408884c401b5686f2bd77628526e3eb2261c0ea. 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/FR6Q11900045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aabb4fbf3bda791e26043b2b287c13575c5042ea9ea7297ce5881b04694ca0f. 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/FR6Q11900046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc4c111351abe63be105b3d62d23d6f7ddd667cbbe81c5661347551556d548c0. 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/FR6Q11900047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5556079b4edfcbc89438a630aab94e5e1325de8dbe9a4d65d58888eb5369682. 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/FR6Q11900048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb413c19e79bcb4747dff9114363afe7554d573970147c53fc875b1d74baba7a7. 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/FR6Q11900049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34700d149ebb7312c10d84170403506b3a7779a78602fe1236d4f6437b7896cd. 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/FR6Q11900050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8678e14ce36dfc5e5c2f68b28f055a6bdfc3f588d740be8080ddeedcb81539a. 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/FR6Q11900052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc57de95df304ab171ff6dbae21b6af05bcb0badcfe3fa13486311caf37a689db. 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/FR6Q11900054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb01d57d29b6f44acf0c3dd9e4266e8c18c5f8583c63066124d0911426d1fcd81. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/FR6Q11900055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb611eeaddde924d6ec831e7d67039062ccb1b14fb1bd624b7d6cdcc328f0981d. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FR6Q12000014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c2542cb5d089a40e907f50106e94053fb3f9fcd77f1f0c97fb685164dc0da24. 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/FR6Q12000022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e7093b5a13187453f28f9cf02845b2877492366626dc1a2a70f0387cef0d4fb. 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/FR6Q12000026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbef3d044723e26450ed0f911b33821f73d6ca10a18f42c0f468e233cd9cb9159. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/FR6Q12000030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7613139ec527a85691ad12207a9ca1f5d09d177aa8301ce78f1005be5f967934. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/FR6Q12000076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa6efe192fd47fcca6bb176116f2acec1f7e88c822a9f52d13d5d8c3068f172e. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/FR6Q12100030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde4e683f3c6309b287737bb28bdd08e7bec65986a7634f231168329522f4da0b. 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/FRUM72201784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3384d1f48dbba18a7a36e22dcc3c128222e8ad9011faccfa3faf4f6e354a8383. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/FRUM72301675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e96604a9938ef239f4d52b5b24a70449550aff841bbc29bfa11580636cf8a47. 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/FR6Q11900051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52adf84017a782dff6414a5509a73c5aeb24106e92e900e88d8f577b1b47a090. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR26V2088537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79f92cd55f5439d6818646a1c2f03a745d9355d471ad357154b13c8f040a4139. 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/NL56R1710929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79f92cd55f5439d6818646a1c2f03a745d9355d471ad357154b13c8f040a4139. 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/NL56R1710929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43a07f3ada16346206599082a98af5672c59225ccd69635aa1660db188ccd5d3. 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/FR10S1901560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadc21e3a4e2703174826630473ff44eeac74401f2fddb02b4f90693622328a00. 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/FR6Q11900053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6213ab3d53b7f9a5f23212e60b6fbc52924278a8cb1461ec748c71a0eb6a28bd. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/FR6Q12000028.