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 0x7a5ac0653d771d2364329bed8b132e7f96e5e3334fd72a42b1f2df98ea99962d. 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/74653a3a-0f8c-4137-a58e-43b88b701102.json and https://artists.proofprofile.net/proofs/artist/74653a3a-0f8c-4137-a58e-43b88b701102.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 0xb1c4dbea327f40f0b456c8159f11407e949c637554176605da2abd70f28f4415. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USA2P2346811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x021a9c07cdfaa108389a9db34fd703a71dde0c4cb09a8372a6fd85b1a28e01ef. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USA2P2321593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x903407fbcfc28fe6cd69510739655246393da31b510902ba10d4a273148a73ea. 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/USA2P2333187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09701f61d7f867153122e789fd4dbe76cdbbffb99753138cf649362bc7d2f47f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USA2P2316582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fc0451dffcaf6ca4ff54a8cad3036a5b97093c5c8e70326c0cadf4602d2bf6a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/UYB282379020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe831935488682146ef9d6628066b650a8f8e390d8f9859ea8869ffd5deeb2e53. 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/MXF012400475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe205cc21516de16b29442ae4b98ec050cd3f3cbb3297c509923da97a15623605. 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/USA2P2327674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13a20a9b84ea33b6abfd9c18ca466dbdfff07e41915649e0677ee0a39cb5ae75. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USA2P2336008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeac366220b82021358d9d5a5b7cb274ae63e9dcca16c9c2111df66df799fc66c. 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/USA2P2343706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x228a039c8725246c30c05553e0e460efb15a62bf18e774661e3210ab172e16fa. 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/USA2P2343707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe099610f43043ac58ef9a1220f4988353783591d457ba917a0f7d9eeb545ccae. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/USA2P2343711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d486a6af065b8661705c370e46dac35b8a214bb58f71d664f3485dd60acdce9. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USA2P2343712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b2a9adc0ec4a265e69f8da18f53246e10de1144557826e0ae676725b9104776. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USA2P2421042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6785c8273d94c7eae55d3c5d1f150af2af82cfc49bbfd18b917d7c2d54f6f3f9. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZDQH2415599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e1451a46cd938c596fe1e7b05cae5c06e277ff667c1a18dde156f87a26a6072. 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/USA2P2409089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb1a4a4357c27a7ef539050b0394af892cc6049f59bbe5f4ce476004b718153e. 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/USA2P2358701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bd6fb6cd6508540ab6390e3acb5407b34ec1420c4182ca33e9f1f3a964b371e. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USA2P2402407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccc21e36fd6c2806090416759d9a1fb4235aaac4deea3e83fefca62cb25699d8. 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/USA2P2355173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bd46e628569ca59cc4975d84b8d5a7eeecc7f6398f8f44d735eb50abc95f232. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USA2P2339865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdbbd0b3d860ca584cfab81b199a624f2a77e7743d6ea57116e83930145ce575. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USA2P2337878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa598350edb2873eb5b3e276ce3650e1cdcf65fa58fdff8f933919cf69895429f. 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/USA2P2336389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3399a2f5c221156d2a266fef646c7a992b07e321d14bdf1c0f0ffae72086db2. 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/USA2P2210217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc044040e21cbe3fc239c0bf6d39c26344753e262941edb15e0a7d26c5812e369. 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/USA2P2444290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73b47fb126b2e6195215432bd971b923554b329118ad0c4591dadd4bde98836f. 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/QZQMB2105583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf908b559b53d92c149a6d3b0f1deb9da9d9bc3248507384f3e954b8d07daab67. 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/USA2P2466651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb6929c64540f63ffa5db73b8f650ebe36aae853de7ac817aa2c7b417be820bf. 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/USA2P2466652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3fde1afeb581d63d3d805ded0576c20d0dd07c77516baa5531aa3e23150d930. 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/USA2P2519752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe52a853a7ebc9402f9f7aed0d3ef34c2d0f26d7010cee1a19851028b133f212b. 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/USA2P2506599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e1416d550924b14293ebe9427e267cd7010120a20c0d1ee60eac47c748bfe03. 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/USA2P2506602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38344950038e8230591fba1a8516985517e4db94f7348b97ab1cb2d576b801d4. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USA2P2503485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19d067dce7b8fa8a1546e8f36f2ac38dcd2b486a80b71f4b81061c73eab67054. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/MXA3T2443879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd5d67a90e8b90d79bb8140650ccc19b24d84e1382af11c533a4fd6fb4f8f9ba. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USA2P2471738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5849464d68c786a9529a609e2b3e0373757cfccd715d5eaa943f78b19e7f1b21. 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/MXA2F2300078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd05dfd53b3e6da17a1f0fd642f7f0e8a9f11f12ad5b0445809f652d376e80861. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/MXA411400240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4533e7c4d9a0ee9a8286e9304e597af4482c191477196195d94a59f3426f2cf. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USA2P2458944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c00d1547d369ba5aac6b343d0f5e3de3e0f9ff4a9140f66f45a7bb2852283a0. 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/USANG2416875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8c4c520a790bc24200b30cea98e2b8fe0ef3b810ef53b1bd2abac55297bb220. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USA2P2436853.