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 0xd221f96a246665a100ff5c7e06b81f8e78ee0708a1ed8f16c06143e94cafe73f. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5752c577-4214-41f5-8013-918d96df40fa.json and https://artists.proofprofile.net/proofs/artist/5752c577-4214-41f5-8013-918d96df40fa.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 0xe3d43beb4f9b7d24b70e7b5c5d19d98bf9e90e494bd11b375a1dd0752bd6200d. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZHN52307772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb29a2f3a35c526baacb180064a6fb351b654ac578a1395b24f33882cdb93066b. 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/QZHN72367917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8ef3f314db7006d7e8b0d30768fd781656342c03ec9fe89dbd66c2a4e94c95c. 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/QZHN72367918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3626076ff11620293fac295e880d88a5596255c457ae71c9b1eb9358ef5a38e1. 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/QZHN72367919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71307bfca986e79ceee8bdfc958272d56b142604649926830ed8761b18a22783. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZHN72367920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14f9c216009dbe65f9a7f8fd75ec20174ead343264acca236974955c88ccff9b. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/QZHN72367922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2c9c9fd86d4c4b30143bb9fa2121113045e0b678542e6fc463ff12383ab0b97. 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/QZHN72367923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc79d927bfb127f70948f6a2eda3c81dd85965657039ffbde5e1cefa3c30cac00. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/QZHN72367916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3d43beb4f9b7d24b70e7b5c5d19d98bf9e90e494bd11b375a1dd0752bd6200d. 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/QZHN52307772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36dfd2f562caf710730c6d58a8826e499ff80824bcf41dd3b84c28cc234f4eb4. 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/QZMEQ2425245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21117d3760533c3bfcc5a2306cb731b3e0a865d10ea663f3db78836de7245f58. 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/QZMEQ2425246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50be7a93262c84f818362ad91400b5dee06d0c29ce79fcbe489ed30fc3e10c61. 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/QZMEQ2425247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77fb622307412d2340d3dc1422bf98b4f096cbfe9766fde0b5c2fc6419ecd9d9. 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/QZMEQ2425248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd66d67a5c24a4f9fe6ef5be9cba4a340bb69e59613d289374fe4f654b641da1d. 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/QZMEQ2425249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x528b032295d9c825431dcb9d6f6ce8c8b8909e8f2ba3d10ea6ac64c1ed638b3c. 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/QZMEQ2425250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30405823087459ea6e5c0414297b0843c87256f247750be4bec6495bc45a285d. 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/QZMEQ2425251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd8fa92ba5a8f31b179456a298b0e580dd1e5d2c12f4084c5ad3501538de9d4a. 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/QZMEQ2425252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc85b338048876aacb101c3009c21a09cb5a8a37fd78d5433c0030a1106654238. 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/QZMEQ2425253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbe30e6bbbe88d011c007e9168541549c2d07b6036d730b0151b551b50d20f32. 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/QZMEQ2425254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd413b91ed6c9390315679b7225c214504e41a0b23face4582e85ecb39f383dd. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZES52363471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x447a425023569d4f8c1d04695a60967b9ac96224582fafb9765eceff5a39abf6. 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/QZES52363472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a33f6ac99999f65ee6ef64175d48ffdb09b402c312195ec28a452897e0b0360. 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/QZES52363473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x638471695055665a22b0d9ba7fac469310ad31b4b75b665f70046fff0065828f. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/QZES52363470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf016d2a19b33848b629856f672f3c8aec036d99062aebb71ce5a9d2b0dc9259a. 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/QZFZ22391267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32121e38ab9b9fb59b73020bc2438bc72e56464bbe95cd2b1436eddcb1db3335. 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/QZFZ22391268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3301924471587b2a4a0876b48d2cc81534f1a1bb20a147245500127ff331af5b. 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/QZFZ22391269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2ce6ddd956822b457ff9c7c861a1044ba1a4bbd1964c3c3881a144d1825eb26. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZFZ22391270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a12dee5d7f67ae4fb1fc071b892485dc9d815d8b0316960133c805ff6eff9e0. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/QZFZ22391271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28e5f87ad02c1b3a5f724f53ce08e8166f467f71c1162b4572f500deaa9102ec. 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/QZFZ22391272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x956a47983463e485ec51586a9f29913f6ae9622e40f9f0dfa0e281151ea737a0. 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/QZFZ22391273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae4713377bc7e352bcd9806148e442bdd3f49fa7c25100c6e3f6fa171b92d990. 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/QZHN52304045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d65eeb7184a0d8ffea3ae0c304f1e725062fcf0117d9f4b6088a48607b2cda8. 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/QZHN52304053.