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 0x1e3869e5736e606f5dee7810ebb479da024a1861c04ed696d71e07dad7fcd02b. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a3221151-6924-4b51-b5b3-0ad0752e9846.json and https://artists.proofprofile.net/proofs/artist/a3221151-6924-4b51-b5b3-0ad0752e9846.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 0x934e45b52a62787c924008d8100b52e27f7208cf8c16dd577569b0c528532bc0. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/GX5J22100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf300e408cbc33b6412779b50fe92e1782e6a9093947e6484f199eae868c9f24e. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/GX5J22100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cc8811816a180453f08de87f4f50451d95bae97c5471fe35edabf6c59849aba. 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/QZNWR2275232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fadd7a2c9da7b73331d78e0074d41bdf0ed9dc8f92287ff236f4ab4743eda1d. 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/FRX872273497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73a038b51c1e80da5bb12dfd737fb8dda1bdda6c82c62ae13806e0b77356c1ba. 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/QZ7GS1700016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fdffeb96a9a7ad1650b3a3fd81934f0c77d0259e74b42d2a979fe2c2422fae9. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/QZTAU2281125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f3463e67a01057d5e2bcaab147de759090c93b11e0c9738e8e3ca671a289787. 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/QZNWZ2168392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb50c04b26a6d90174d614536653b039deb5a004ee2445e462f5806eed32d463. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/QZES62280868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7323a9a14dc45cf2c1833d529a2c86a808e0e47cf690fff90f0773afd5b83b8a. 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/FRX282226599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x777375483f417763d1b6e9036d04c5009862b680592239776a4e31b9b6469413. Chain 2 (Bitcoin): anchored in block 960170 (2026-07-29T23:52:38Z), 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/QZDA42286095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec492be9dc79f2ce62c780f8291ef6e1a7d7f674f781a67ca2fd7b30efb18e47. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/GB6TW2000201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3e2edf5695f0b50185b78032438f98af3679a1015a8d832a1a82f5013209b7e. 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/GX5J22100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x009dc8d54ccde3f3b4c9e9c2ae3e7c3733d06420069a3973292602c33b7b3057. 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/SE6XX2270637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef1fa2f905c88c3ceaa848ccc26962941b24f17501df13f226f4de611d6bbdf9. 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/QZFZ42233165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2feb5487c511d5d195484713ae03bf806d00e8d020bc6ffbecc4b9d534af1295. 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/QZTAT2290281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x012a29212e4deef43746b03becdc1f2658e060c7fe9334535ced970a21587c40. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/USDY42201130.
New Indie Folk; April 2022, Vol. 1 (Indie Folk Central)
​New Indie Folk; April 2022, Vol. ​2​ (Indie Folk Central)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d2002433ddeb9913ab94b7cf5fc4d173077687b1d7eb2802edbc68a5ed6cadc. 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/QZDA82213481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc118940d8c3378bb2d14b1fb79d78618b07a4a9980e53ca46875d80b9b1fc40e. 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/CAN6Y2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2baeda97d2b086a037ed67d28da136578522745cda9bb3540a9d07e84115a79. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/QZES52265488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf32d8fb240167cc1e433c158199d4885c14007552e0e444dbc746d4d79533716. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/QZWFP2406397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8b09166bed37ec5ad47e1787f062630dca2913c7702f54d199a06e0899d8f6c. 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/QZTB22361106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3352ce003347dbcda2ca4a8818e7ba74435a754218e20cdeec365580ecb1eea. 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/QZDA72354779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1d45f45e16b24eb4ba8e9b07a2ee4026ee0f4fbf2c6c50aa9d79b3976972aea. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZTAY2214739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66cad71b6fdbff07b0c311e15f7bbbcae582cd47e0cb273bee271e9513946d0f. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/QZNWV2221679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9962d07e7e7f0a14c3ba394b9ce9becfd2f6294ec778072e75799316972d0c66. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZNWZ2127030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae89051d51cd816806413120b1c6243e87515a2b74918a6b74f83918fc4ffbc8. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/QZNWZ2168389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cea39b9f585c6536386e3b30be1c8a6c4e872f98dc6e427024c9eb4ad2392ca. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/QZNWZ2168391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f3463e67a01057d5e2bcaab147de759090c93b11e0c9738e8e3ca671a289787. 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/QZNWZ2168392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9962d07e7e7f0a14c3ba394b9ce9becfd2f6294ec778072e75799316972d0c66. 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/QZNWZ2127030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e7c17c62ea28f5e9f9f59fa0b4ec7b5752ae6b2a6f75bd74dd0cf6e68a221db. Chain 2 (Bitcoin): anchored in block 960429 (2026-07-31T16:07:24Z), 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/QZHN52175472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87bcfaa25f713900a5b497a4908b0c5e98b2a0a90a8590c7b2f3d0012ee1e521. 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/QZMER2018124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c4b6fb1d5b1c06241d951870f551fb4672a4fdf5308435e6663c93b61944dc8. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/QZMEM2039803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2b14f09096abbcdd6d0c058a23ae0de0b44ae101f582ade9c1d6a65d83c1533. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/USCGH2486883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8544d545ab43e958f8f04a8c825926cc66a4806e8405ece92781f559ea1f97c. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/USCGH2486891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2357c116ae349640c3f774a7385c700af54d657bceb1ebda45dd1196f6f9cdf. 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/USCGH2486892.