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 0x14d549b0f7f8de054400cbca81d0403bac112f810c3423d7b24e9d0d2f6933f6. 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/7b9f989e-e3ca-40cb-95da-a493eb12b52a.json and https://artists.proofprofile.net/proofs/artist/7b9f989e-e3ca-40cb-95da-a493eb12b52a.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 0x8a54c78701e0794058f4595c10bfdc1130d460656d7e8aa1457581f38f089477. 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/GBARL9000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85d31256fe36ba6a1dee737a7910d71bcfec028aa423285f6f65e6a2456ae5d3. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:34:13Z), 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/GBARL9600084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bfb3edd124f43a0e684a5593b3020291426eef19db914372e62c884f234d198. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/GBARL9600195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1f8fdfe03b38459d74527c1fe54e2bb36f568a13ece4e8afbd837a1fb3168dd. 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/GBARL9600212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85d31256fe36ba6a1dee737a7910d71bcfec028aa423285f6f65e6a2456ae5d3. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/GBARL9600084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50314ffbec19d47861f01cd03081701d8edceb8b7beda501ab211c75f15d77c6. 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/IEHEK1500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17cedf8f475e90c170f6978a3368a99d4048ae35c525b3776ab7bd654a994015. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:10:54Z), 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/IEHEK1500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x181e9f2b1767da758a78d0ee83d399ad4e12759057e4d96cf29f47ede0963da4. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/IEHEK1500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd86d5d7c421aabc30344986430e7de269283a800095d3c3125b9f6b90dddf7b4. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/IEHEK1500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd78100c9b43b9d3c7024266d8c7c46a57cf37c8f48b98290332b44393907017a. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/IEHEK1500024.
Brian Kennedy Live at Vicar Street Dublin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1b45537e13e26f6bbf3e5fb3f76d18964d9be2ad03aea3da9f24a047864b073. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NOAMM0400419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff2b242927344fb77aa616754e84f0ad603538e77903cbce27967adf776baa1e. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/NOAMM0125010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x347c9a811ee4c49a27dca17de388a930cce6a4a2e133a72a7a626148ffc24acd. 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/GBARL9600246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff2b242927344fb77aa616754e84f0ad603538e77903cbce27967adf776baa1e. 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/NOAMM0125010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2baf59c3555348e6a55628d8e85e4d57888b7424ba1c00c98709b7b6a8993f35. 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/IEATB0600022.
Nocturne: The 25th Anniversary Collection
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff2b242927344fb77aa616754e84f0ad603538e77903cbce27967adf776baa1e. 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/NOAMM0125010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08c31143706efab49652b6da8259319a73ec6d73b2137a77caab91e85f94cb65. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NOUM71900093.
Ireland's Call: Songs From The Land Of Giants
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e0f264d30981882235eea5cf4fd758a3d1dae5893e5cd36d5cff362ac3fe856. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBUM71106712.
Jan Douwe Kroeske presents: 2 Meter Sessions, Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccc5f49293bbab2797aae64212e2728115a6e07a03b27b4dd9706b36e5ec86b7. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T09:57:36Z), 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/NL07C1700520.
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 0xc03533a629d200d7b11277725244508c4e9d69e15d8cabbb0296a44e8cc7a323. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/IEATB0800085.
New York Stroll (Cinélu & Brian Kennedy RMX)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79cdc3045fb64baddb95b46c315de9acdadbbc736559b9eeed604ff1f2ec48cf. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/DELV42100117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd54ba3f3422ca0a123eade184109b06140a1b390644939e5c04e522cd42370a3. 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/GBARL9600117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12a58fb99e674db3a97952290fb9285ea02c0aec84c9e57138d825f74593d336. 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/USCP50300215.