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 0x06edb3e7be21222f1139d081d088d9104573cbf6614af78b7cfd08c11cd7dd67. 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/ddd761ac-58c5-4bdf-a9ae-e6147d11e5c4.json and https://artists.proofprofile.net/proofs/artist/ddd761ac-58c5-4bdf-a9ae-e6147d11e5c4.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 0x23e7d2e08a3965ad13e339cdb2e65b0b0e697a9f59087ea7be1d37f2de467c7a. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/FRX762128598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16a49bb441e917c42457e95cbefe21a05328bc072b762e785a7ec6b56dc0691b. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/FRX762170646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf25e5becdcfc0f9bf231c40c0ec34e9c0a3223cc78a5cc89403c79f1c62e1197. 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/FR96X2263154.
Adventures in Melodyland: Fun and Upbeat Songs for Kids
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07ea279c4bd3276646bab26a86380a90004a0246a8d3046912c6bc623cf4d6f1. 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/FRX202387843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2b504a2f525022b306a775f2f3cfbe4a08f7231bdbad8e86d79a8d6955fb847. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/FRX202387844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcf1cf2ab3420d3bcb196c6a2899fb0bffe49529834f1fae7c02c86094cc0f57. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T13:04:09Z), 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/FRX202387846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x778cdb910dfdb5d252596e680459c9a369dd54e0c7dc825714580228d7dbb959. 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/DGA072373882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x544fde82744761b4ec3381597217e7a6d52eb0621ad3b5a586a2091602e7d86d. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T11:08:30Z), 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/DGA072373883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x513b7da76b91bbfeaa6115f0d1f0256aebafb4b25bb59926c7191859887f7062. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DGA0P2389180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc226ce60553b6c519940f390ca3e9e141eeb11266dc1f6a6fd313c1a1cba0b20. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/FRX452446132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x238c360c5ed14adcf78901d39c8f98d965d566a105b341b63361431c38ef1e08. 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/FRX282390046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09d8714a37e567741251c748c64f14f2d19766cb17fe1e49c46c56d3473003a3. 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/FRX282390047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0384d030e59aa39aed02c4c42f38a7e7c17ce222e7170f5165b527d1f4878f8e. 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/FRX282390048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd225b65a3eaabfbe675153a11cced8fc9b3e99926f41a60ceaf7a7b341b0286b. 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/FRX282390049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45777d9b9431edaf19d41f3a44da8bc32f6326621beb96399dae597d6dd045bd. 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/FRX282390050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcffbd4074728742a512595dc1e32f580dc476a81e46987201c652477d7fa0f09. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/FRX282390051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0179c14821db94f403a3a6ff10722809f4f8cd5622c1d74107896a97db726b07. 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/FRX282390052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6f3eba54ad81df2e3c780bb806573725751ceb57a2c48729e24c3d3c0a704d3. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/FRX282390053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x284cd8ef77b2f8d51ed70874b0066634b105958073474bb31b334a6dd0315837. 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/FR96X2296978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1894f68472ef494dff3cf393d34ba3cf2e38b5fcb84b4621cc8ca3a01184a8c. 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/FR96X2296981.