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 0xb5dce46fc6572d59ff5ec6dc057a97519c320af9ceb830c8c4c12e7654a74867. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5778d3da-bf3b-4ef6-a3cc-cfae8fe21c92.json and https://artists.proofprofile.net/proofs/artist/5778d3da-bf3b-4ef6-a3cc-cfae8fe21c92.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 0x41d1e701a21fbc2b390dfc6f5926eb26d7c239a2b47fa34e8ab5d733dc4522f1. 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/UKTJS2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a62a018f01f7ae17950b762d52accf33cc5b1603b23d5505b97e554f8ec434c. 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/UKTJS2100003.
Highfield’s Lament / 200 Miles South West
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59d8b184b9bf8b6b63a0ab48b8bb35ad4352b2b78351af91fe69a13aa8da3e8d. 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/UKTJS2100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e9d39bb36b55808ebe8944f295e882847304e4cf1b0f77cfc260dd51fd40dba. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), 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/UKTJS2100002.
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 0xe654e324e644b4aa30e6904072b1dd2d80d8b7798e7a9b467d007a2f020283dc. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/UKTJS2100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb34f696f8118389def3344306d3c2105aac1c8765118ad040dd717270d37d1e. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/UKTJS2100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4067d8b45fe24f61806c3f51877703ffaaf9e5d7c0265f42f57eeaa856dc5fdb. 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/UKTJS2100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33a1e797eddadb11d100903d429a05efaa031aac0be79450644a4b89fe381067. 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/UKTJS2100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b92f1e7ded1e60ffca296170d36a247b9b356210fa6af73ca9b47e86b9b1a36. 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/UKTJS1900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c74a62d3f57fb6425dd72be6efd57f5aa2f89c4e0afd3fbfe4b06784e8ec174. 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/UKTJS1900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e54336d416f291532f8d77fef9dbfb4e61d3abd5ed55ab97cb8fdd8c4bae991. 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/UKTJS1900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9154081fab4094a2d98bc31173303eacd01fa858a7433ad5fefc08dc96cc08de. Chain 2 (Bitcoin): anchored in block 957304 (2026-07-09T12:19:34Z), 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/UKTJS1900010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94c6ee6e3094376d68272419452a348ee4f1354e6af73d813507ef31403abc88. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/UKTJS1900001.
What I Saw in My Dream as I Slept in My Chair
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfebc20e976917e8ce56306c8182102ae95c3a7cd54a9522d9ec40c312ac5683. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/UKTJS1900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed870d6e6fc4e0f2ccb5d6c63a4dadfbaed5c67a485350650f15bb360dc6addc. 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/GBBYD1641605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dc8a719b7c480acf87533dfe51f42ca4247da898fcde9b4d5107e1334009b19. 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/GBBYD1641606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf439f987a2c22ad2d911e5566f6f5c03503eca0c831c15880767299b1a1b385c. 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/GBBYD1641607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d42ff983d34f5e79e142b2fd7ef164b37e719244dd6e2f627e32c5dc9a829af. 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/GBBYD1641601.