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 0x15460eda28be000ef78873b7d4ffda952c6a4e1180522f109b4e29fd94601096. 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/33ebcaad-9fa7-45a8-a40b-571f1c94d873.json and https://artists.proofprofile.net/proofs/artist/33ebcaad-9fa7-45a8-a40b-571f1c94d873.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 0x280f0482227a0e2f3fe964f4019748eede05ff3c3c35e77d4e83c82e59a57dfa. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/USFWP0900148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff83070b8e0a5cf165b23315e79635cee603f970713edeb1a1127d95e8b0bb88. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USFWP0900155.
If Your Heart Should Ever Roll This Way Again
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42df67799bf551a4fcf43f99e322bd282818099d68f4911e20048ed426145687. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/USFWP1100150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfefe9849dd63a2fe1d5c549885e3aa4e346bb5877147a77c5020bf8a7d61dfc6. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T01:47:42Z), 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/QMKNK1500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22e3aa7958ea1dda14b7b2dd1ce5048de9926f4fec4a43578c82f57429b81bcd. 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/QMKNK1500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcf462dce1d0b872f2442c1899679d212054ec2ae28f7936a9ed1f40b8c7414e. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/QMKNK1500006.
Russell Moore & IIIrd Tyme Out: The Collection
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b3fe62c649a98b34dda9d4fa9d121fa7093ca537aacee1cbb94aa0eac1db20d. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USFWP0900146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf45eeb495bbd6c3b9d6790f9c4a81c95574447a8bffa1c1f22319d09d92ca1c6. 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/USFWP0900147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x280f0482227a0e2f3fe964f4019748eede05ff3c3c35e77d4e83c82e59a57dfa. 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/USFWP0900148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74e5e6cb88d305df1fc93d77ec225dd4f26bbf8e68bc0826674f87cc1812b818. 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/USFWP0900149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26f7f8a5618ae18a9ec70aa5b2e0bbc5cf13146cdf3c618b82d7b5579311e788. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/USFWP0900150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ca0f0ffa820009f0fa18d500e8706253ea37801959ff90236df82d48a500cdd. 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/USFWP0900153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff83070b8e0a5cf165b23315e79635cee603f970713edeb1a1127d95e8b0bb88. 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/USFWP0900155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x534a3bac70a66b715e8775eaba42111a38702f0285aae6dbd2ea522bf6edddb9. 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/USFWP0900156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d8ff95dd453ace1032dc3875b244cf73b9b4ab740a2f6f616f6f5eb70115f11. 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/USFWP1100147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x500be53973bbe289c67a30ce199f95243b83c8c3efb1fc8179ca7d6a8bf57045. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/USFWP1100149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42df67799bf551a4fcf43f99e322bd282818099d68f4911e20048ed426145687. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/USFWP1100150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fdd5569ec02cc150529cef7c4a1e770698bb01ef7039b1dc699c4a1acf8ca65. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/USFWP1100153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2f6214d561a9b5cd9fd146977e152e5c499183e24e8ce9b50bd5a747f21adc6. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/USFWP1100159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafca77a6ac5c8abfa69edb6475f28e5e823b904c755cef5538f01fce6551e3c8. 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/USFWP1100500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe88ae0eabbd5e807a6634e00cc1c50b32f6ad9b10fd51c2c38b913ff96d40a8e. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/USFWP1000863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd33713a7e0153cb4dff05dcc414dd8c6192e262eb8d900861e6698ad2e91db48. 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/USFWP1000855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36ee75ad7dac30810bce5b2946a679eb838ebc6521a911a372d9a174c1a367ff. 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/USFWP1000851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eef738381d5f4bcc041e657046eea1d2528de71004e2009c73571ed1ef0a82e. 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/USFWP1000867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79795dc3a2a7684a549595491135e8148b894c35d3dde2140a6c5e05dad007c4. 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/USFWP1000708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18ca652e92cb72757b3b9265b4619e268f6fc2a5230099686bd447dfbd5350b5. 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/USFWP1000713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x593c595da2b17d958b75a258ddbcb55c821cdb0d50c6f1d810091af1bedd65d5. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/USFWP1300028.
Classic Sounds of New Bluegrass (Vol. 3)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96a17a12d045c17a647575fa89f4aa6698c42ea697ddfb4593d6c9ddec437bc7. 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/USFWP0900151.
Classic Sounds of New Bluegrass (Vol. 1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e28429f2e3ff11af0e15dd35a0289f4ae0d7bc8ccbcac3d64a1ed76249f973b. 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/USFWP1200900.