thumb|upright=1.35|Samples of felt in different colors thumb|Kazakh felt yurt Felt is a textile that is produced by matting, condensing, and pressing fibers together. Felt can be made of natural fibe
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 0x6e007bdf0c96328d0b8fc593fc855d2ac6369ab7b610359aac79dd7166c12203. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/771c1046-3db7-4056-acad-40490347b0c0.json and https://artists.proofprofile.net/proofs/artist/771c1046-3db7-4056-acad-40490347b0c0.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 0x82b95bb03a1f6a53f61c37197afeddf0c6c35d95901de7b930886705cae6cbd6. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USBWK0500102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x140f31f7b086ba1dbd434bfcf7b5b4185ff583812f623ab8849ac286c47bb12f. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:00:22Z), 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/USBWK0500103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x816057f7fce43b822bfcbb7d53db31e0dd68d55fbbc6dd8e833710deaa93ccb2. 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/USBWK0500104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8be4837f7939b2585913080efecca791d0b316840719f9d08b897d49887c773f. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/USBWK0500105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa126313c3b3cd78be23535458fbb4a5acd1a515dfe4c6225c34a2e7324b3c240. 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/USBWK0500106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x844a5798abe2c987b28c4cc15613da9d9aa32ec5b931472201166fff18fe9184. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T08:10:40Z), 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/USBWK0500108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x684bc166abf002eff7aea86aa999f6293ed451676c149ef080f62bbb17a03801. 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/USBWK0500109.
Felt 2: A Tribute To Lisa Bonet (Instrumental Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a943dbd2827f046019493aace820597d0e41cfc33035af3fdd49904c1eade98. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/USBWK0500086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9244f611596e96286a7641a9cbbed2a13efdfa6c54e31c5ec04a5fafbdd60b70. 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/USBWK0500087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a9cb82ce3e9a8ea0030305b17f2a5802a11ecd20af602f43c2409e64963449d. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/USBWK0500088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11a2984b1d43ef859ff983fe87cc93e7b5e1860bfe2c3839139ef5b63e2ac851. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/USBWK0500093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6976ee16873179780b5ef8fa239482f74238ecb840366ecc233ae2b0fd711e37. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/USBWK0500094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ef03d2de7890aca7ec852d156c78297ff808717d7d0f765e2e1446d59bba506. 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/USBWK0500095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ba969724809a11d0d329a5435d759956cf9a9ebec7aa2b2fa963bc46f4beed6. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:21:14Z), 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/USBWK0500096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6b939dde7ad3df34e415a6bad998cdfaa844396da2f6c9b69616658d2596395. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USBWK0500098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f99c39a90723c4d3e1a08d8711ca5d867ea8277e0d12c8eed76e5b033a39512. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USBWK0500099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bcb3c75647ad740edf3f25dd092af52baa1fbe07ab00781e6e8af059ef2e4ea. 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/USBWK0500100.
Felt 3: A Tribute To Rosie Perez [Deluxe Edition]
Felt 3: A Tribute To Rosie Perez (Instrumentals & Acapellas)
Felt 3: A Tribute To Rosie Perez (Deluxe Edition)
Felt 3: A Tribute To Rosie Perez [Instrumentals & Acapellas]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52c4ea28925203504d6d2bc2e0f4f9c7b7b6c4d5b9dd5fe3a6584675fafee478. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USBWK2000196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d0c8fd22772ac8970eab4ea4723d5b80f4c914e75c75a94063dae1cf2e5348f. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USBWK2000159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21b086942b8ba70774a3edbe5c301f3dabdc06bd55c0b53e5cee0872a6df14aa. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USLZJ2122930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x835e49b766562f82dc132c73214b3a24f34cb0a14782a385620e2c6c005caf61. 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/USGH60610098.
RSE20: 20 Years of Rhymesayers Entertainment
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x816057f7fce43b822bfcbb7d53db31e0dd68d55fbbc6dd8e833710deaa93ccb2. 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/USBWK0500104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x283655ec3643cc81050207a062e60e29457e47a75af69375e250ae16ed1c39c8. 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/USBWK0500091.