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 0x7abef8989b6ed42cc1e41c8748545c981987f511c12637cbe2e0784adba09324. 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/45a445b2-c25f-489c-8b57-012a5a485b0e.json and https://artists.proofprofile.net/proofs/artist/45a445b2-c25f-489c-8b57-012a5a485b0e.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 0x77bd68192b12d0109ff51f8328559705ea5b1e295feed6ccac1aa9ae8f6fadc1. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/NLA309000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x684adf1b79e40bdec16a6e4e396658398721dc6ce71ebeb1000c82c6b02ec752. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:38:56Z), 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/NLA309000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd9162c5c5dbb42a49d6ac9640921dbe767ebffbebd7ad7c53024acfa81d560d. Chain 2 (Bitcoin): anchored in block 957702 (2026-07-12T12:25:41Z), 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/NLA309000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb91d1b7ecebce12ae0cb80bd1cb78dfb4b6bd9816ac1c322fb08e0a2bc5d1f65. 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/NLA309000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeef5a14dd18db1187e20e1c7b0d9b4dbdd9e6eb1e1b6d007bda40ce9748f5e8f. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/NLC410100014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d790271c7f06230a3511a18de508c5bd3ca38d3972fd0860c465123cdc2f322. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:47:03Z), 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/NLA309290038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8619792ffd6b878ea0db00fb3ef34c3209b1d5ab75fcfb37050529cddc7ea266. Chain 2 (Bitcoin): anchored in block 957796 (2026-07-13T03:24:42Z), 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/NLA309290039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07827a219b776bdfebef1d836e99228bf22c5362d240062d67b8b813c99215ce. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:22:32Z), 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/NLA309290045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59e500fdca2db1456b7197674bd26e79cfde3ec7845c3bc444f80030330eff2f. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/NLA309300100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbec09431793ccaeb4238d600e7c25afbabe55b370c5a2f1ad4b3325dbc0f2f89. 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/NLA309400233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a806d2b98507d4845886ac29b684ae8d73093e300b672d7607949a1d3925b3b. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/NLA309400234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10b923d19d30008d7013c2df8c25bc7a012e9aa2905b712fc16a4a26b60585f4. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/NLA309400241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16d7d12e2d5123b7916e131e695ebf85c147a37cd8e63acc750c9fb9fe150c7d. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/NLA309800211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c699d07f2d68b782d8d4f406fae21dcde082e3a02024d511ed6bcafa7ebec98. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/NLA309000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6ce6f38e10e3474dd35a51b9895cab44577e973e6fa399e3469b947458b3142. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:08:42Z), 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/NLC240700018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x309f0bcbb2684e03bf956770952356ed7bc2e1895af9355fa72b997438e2c762. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/NLC240700020.
Iedereen Is Van De Wereld (Nacht Van De Vluchteling)
Jan Douwe Kroeske presents: 2 Meter Sessions - The Scene
Jan Douwe Kroeske presents: 2 Meter Sessions, Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb18dd6b2c08bb8122a9c8389e669a654e4cdef333e330a145f1c19322e5b3608. 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/NL07C1700511.
Jan Douwe Kroeske presents: The Best of 2 Meter Sessions 1987-2009
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3de9cbf093fcb40063efaf64ead90018bb16d17002dce0d9f5f9aa5a6b9d252a. 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/NL07C2061813.
Jan Douwe Kroeske presents: 2 Meter Sessions, Vol. 5
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ca362e259d101e15a3da95c51970cb21f73369b27c3d92258be91f1cae09fee. Chain 2 (Bitcoin): anchored in block 960170 (2026-07-29T23:52:38Z), 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/NL07C1700315.
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
The Glory Boy Mod Radio Showcase, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5b936da04afbfdc7aafa37c00ddffed30e3c0f3272c28eba8165c871a57a0cc. 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/GBBJL8000680.