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 0x4dac3c04f6c30080706b0583d5f2479d52474c8e021e189ec701da5536645db1. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e5e40a03-c451-4eb3-bdff-34fadf0ea6f6.json and https://artists.proofprofile.net/proofs/artist/e5e40a03-c451-4eb3-bdff-34fadf0ea6f6.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 0x1eca2a3fa84f01cf682afac9d90f2951c169ffd5a95064ba6fdf4e69a3f51248. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/FR9W11829902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a708af05340a9f53b2f15d210a6673d1cb29f0467974083f2290db9a53d7892. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/FR9W11829903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4dd77deb7d5bf24abce30b5974df0268576c04335ce237b0baf024177f2e60c. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/FR9W11906635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23b1edd0f03aeb3fcbf984e0306c7a68964a1605694a2385d55562e9046e2ba6. 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/FR9W11829904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbf78a94ad488a8d94898a79ad2694c196c91ee581acb1b1bc8305e138336633. 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/FR9W11829909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21623bc7924a5d4964a4a3ef2b235e92932a6fa68562eff7e2552327c99da99b. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/FR9W11829906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0dc5f44875f252a10057b9716e0eed08dde596edf598b2de0f1ac3fe473deb7. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/FR9W11829907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9081566b8d29ac648b937804f960a3cccfa688ec6bda160ff697daa7432e753d. 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/FR9W11829908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4dd77deb7d5bf24abce30b5974df0268576c04335ce237b0baf024177f2e60c. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/FR9W11906635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa79704fcc2c98a5b7997accc8349c2ca0b1f807a770ee139ad87c60e37d27960. 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/FR9W12342243.
the wanderer, a song for timothée chalamet
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf12fd78c4ceaf52c8a74433db671fad603f10ab422e13712a76a0f3fb04ad462. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/FR9W12342244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72b7971320e1663d997fe35d449cd7b1bd7d059abe2dcbe1bc7673e582f5e3e7. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/FR9W12342245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f2a89a1f5b7b46fda62d21c68ab17249a43b032bd4325c7c94ef8726a5bceaa. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/FR9W12342246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf6e3027c9957a00b1a1d05ae73540ba35ada02a0915c5b87bb1ed3decb4d76b. 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/FR9W12342247.
ouh (high school dance that never happend)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19e9a533e7658ef201745469dc1a7859f915e9964c3061fe00fc2aaae0338b00. 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/FR9W12342248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedb5f4f5fa38041bb670598bb65a7644546c9dd6d7a6961e030086c4285efa68. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/FR9W12342249.
poussière d'étoile / snow flakes waiting to melt on cheeks
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69ec333465d474277d9d88c4c2f0865251a0a66477129d78eba701f2686ab241. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/FR9W12342250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x440e02f6b383767a6f62c7aacf1bfbc2d1b4093379ca78e3886fcbe66a5efb94. 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/FR9W12342251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ee1e45b30fa997603b22a31dfe84120e4b08476c62e138c7a71a447783cb4a2. 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/FR9W12342252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53c87988b0c3b0226a10855bff5675ab9e0e4419c7fb4deff299cb95b686a03c. 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/FRPGB2219640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe62e7ffb81a19018fe2a7d159b5adedeb993a934385fa56e06079e65835211e1. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/FR9W12141668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd39c729acdf76828bcd1a8f30a244a6189902e34cca4870688a5df53509cb2ee. 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/QZK6N1989565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd33536c9c0331b4cd91dccece174c7e85651785a2fdea81a5555398b0ce517a8. 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/QZHN61999146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b00cd7f4eb5ca71b859585977c80d68ab4963fea2f2a3508068c5894e23b55c. 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/FR9W12141670.