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 0xd39250b0439f4603c2ca8d9902bbf458a20e1b9ad2e4305230911d388d053796. 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/27bf7180-ee61-4bc3-9f18-bf2c1f63d830.json and https://artists.proofprofile.net/proofs/artist/27bf7180-ee61-4bc3-9f18-bf2c1f63d830.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Beats Is A Booming / Sauerkraut Sandwich
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 0xbb0e032f0b752ddc76b35e67e7b29bb7a9ea4dcb75c94ff26129bf319aafaa42. 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/NLC281010750.
Toolroom Selector Series: 5 Koen Groeneveld
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb76f33a4eabd607efd456efdba465aff0eea8fb4fad7bb8f9a7726ce85ad77fd. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/GBBMQ0900019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b0e9396e5c501fca02d486121398adeee30c21364991a00556ab0814bcc18f9. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/NLZ541400851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b0e9396e5c501fca02d486121398adeee30c21364991a00556ab0814bcc18f9. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/NLZ541400851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04009d6b36a7b47355dd0b6865167bede3289d3ccbf3ede4ed78fed8f6854a32. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/NLZ541500365.
Wake Turbulence (Koen Groeneveld Remake)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf01bb22c30a0355d4aa4eb862edfe486783fad7d99abf95218503bf46a06e136. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/NLZ541600450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x357ad9cd100c014562ee5f80d9d06320d7848f9b64d814cfe07d97efc45d7b58. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/NLZ541600597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1332c6aaf988135ebb8009c23c6b3e229912607fe3a88de27db05fceb4143e4b. 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/GBLV61637251.
Koen Groeneveld presents Abzolut Miami 2017
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa5675d758cca0ffabd8813447ef6a89a6aab226a3b456cf481de5e5386ebecc. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T16:17:58Z), 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/GBKQU1708661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03c7d8e009b15cea61fa9057df96391a653902af18762261299ac26cce730975. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GBKQU1718352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b4e18b4dcc60e4e6144eefb50447d56fb98d711376eed83396e15d82fb85d97. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/GBKQU1718354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aa025a70c7b9d1fc8e7f340ba9c88f6b00a08f9773199813f8f0375003f6238. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBKQU1718356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe553844f878741080aa6b8167063c192f9b8fb7d697e43065ae8bd2c5fbc0f6e. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/GBKQU1718359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ab7511a0e90d44ce686e5cee43e25804b8ebc754a395360aa0c10b1c2d8e7fb. 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/GBKQU1718366.
Koen Groeneveld Presents Abzolut Ibiza 2017
Acid Dude - Koen Groeneveld 2017 Reconstruction
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6911a17115196ca10070cf4d8d59e6ba9ce4df24bc8f6823e7ed7c574181a1af. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/GBKQU1754398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14896c702eb7f2943179be78e09460f3b0908fffc4c264e35a277000246d08a2. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GBKQU1781513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06e514c9dbe1cafbb8c06d06942964ffdaf409e7e53734cf61717adf0fc78e8e. 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/GBLV61701463.
Koen Groeneveld Presents Abzolut Miami 2018
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x910ebe20174e471b40feddaff5b5f4015aca3e3d85347fab346cc7096d53b59b. 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/GBKQU1785846.
I See The Moon (Quentin Rodriguez Re-Edit)
Koen Groeneveld Presents Abzolut Ibiza 2018
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80ab010ed62b52bab889a4afef873cceb915c6216e4618215067ef850a4dfd5a. 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/GBKQU1888137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6373f2ef3cb61e0544929cbfeb9c444c2569d461e3eceb1780ca8472f83beb37. 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/GBKQU1898244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba71691459b36c0d820dc97f1b6a481d32145df65970c3240b69750f810b6b6c. 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/GBKQU1889452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1831650d339e0276367f285643f5c9c5a5fe10b207b7b38fe81ba295606ece5e. 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/GBLV61809296.
You Gotta Believe (Koen Groeneveld Re-Edit)
From Lake Geneva To The Finland Station (Koen Groeneveld Re-Fix)
You Gotta Believe - Koen Groeneveld Re-Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a17b34988720f9ee3aa3a3fbf657f52903b84c6043eeee0131da0dd54124795. 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/GBKQU2049356.
Tonight The Music Seems So Loud / Klankentapper
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeec9b78382d7325bf282b915b13f37f357a7d50952ecf2054eab6fe1c7a946c2. 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/GBKQU2098269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed7fc4aa3da4ca1a988668bb2face4431c503c8a8e18263d63fb5524832ec6d2. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/GBKQU2110861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7e1bbaf76bfa36ea2eb154e971819e3e72c50b5da9193f07f83002207c57beb. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/GBKQU2210997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0909bf1db89a8082b4762e49b7cf5c82d918f8c0c12784ceb9604840c181553e. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/GBKQU2202498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a1941a11bf9dfd5f96cb69d51c5ead8310f0a261cf0438c28aeefee32e06af9. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/GBKQU1888130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00fd7cddc1db0cfea9efe4acd1d750a8876fa1ffc9cca65117a3e03d5d4ad063. 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/GBKQU2503032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd439b043e4667ced183dd1b98c61d4b2314e5eaa8f2bafb1a6c85a8e3f841d4a. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/GBKQU2504683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6220480fc8d9b9391ec597f143d16aff49598d7e69a6f63ce6b833d5ce13adda. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/GBKQU2562308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x333fcb12ce7455710914f13542334672fdf654656b4b2134cfa2013b1ff5ef53. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GBKQU2589815.
Toolroom Records Selector Series: 8 Dave Seaman
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30ae71812ee378b3a0ab7530445da5b1ad7d32877add327491b7671c6e3839f6. 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/GBJAJ1001378.
Istandam - Ahmet Sendil Kasimpasa Rulez Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfef6f6f3c37aa28e8d5fc5f4a8e40165d4ef6aad3caaebb6a803919740f1b182. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USLZJ1691232.