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 0x522b4293aa201a63478ca699c7887bc5dc4824c5bf5a31b3a84346ce1b7a0b59. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3bde0df4-cf4c-47f4-bd91-eb59dc5c9ad1.json and https://artists.proofprofile.net/proofs/artist/3bde0df4-cf4c-47f4-bd91-eb59dc5c9ad1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Don't Waste the Dawn (Live at Studio Willibrord, Veenendaal, 24/08/2000)
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 0xf0a434589c64b0269a93e086fde9d6f7b1bd7a5af47869c83976a571011f77c2. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:30:58Z), 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/NLW2R1705926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac5335d91c93033ce1d308b906feae3695a1ca2f9411a66c10f54154c89aceba. 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/NLW2R1705944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x777323a8dab6d8fde98ced0a733c7bf6be3bbf3ce48ae6ef3630e21b1ceca9a8. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/NLW2R1705932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86bd4736534be415112cd24eade5f3834c9782629c70283ed9447bfcdf16f90c. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/NLW2R1705934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c30f719dcef5e8edd25d660bc68a092e7eaa4b303e9a749eab64dbb36901c53. 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/NLW2R1705941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3873aa9fa747583be0e6c7736eeeccde623113bbf52f32d4ca03a2b51077c28d. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/NLW2R1705969.
Old Feet New Shoes: A Collection of Great Youth Songs
Don't Waste The Dawn (Live At Willibrord)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef6d521cc6069064e1d03a0f4b2fabcabf97639f85fd56ebff4bc5f58d691868. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/NLD232100261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef10f0bd0de8f971be2debf8515be4e1c76374d3db6f0bb420a8db0587b4ab9f. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/NLD232100262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x648455cc9006377f25e4809254956870ae22fee19ee28ed3d2869b1fd4e515f7. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:46:59Z), 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/NLD232100264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc0611279824a15dcad9763978e73f6cbf932f5be6e004e0a15a2f8fa98bdce2. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/NLD232100265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67a9399220ed9b86f51d9e936f133272b11f4db7f9740a1ec07eb30523c0d286. 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/NLD232100266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48ce9b6686324ba177e58b902207930e04665415f869521a4b1b9b1707446bd1. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/NLD232100267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6ab061c3f43b30a039bf718aede74c0622f39651101ebd61e4d65c4a7ebda6e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/NLD232100271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x280a256fb10c478e3b8ee843aea8129f4a32e3fd970bfa2352a8b31baf2e41ad. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/NLD232100272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa09759ebebb7de85c89f78118c733a3a82bf556d1e28666ea49ae7d98fb7c521. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QT3F42559001.