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 0x796dbbe55e2ab6c0b07bdd210124cfeb05e9732f2c3bd2f45f3b2cf963e9d138. 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/940ecd83-cb11-4f7c-a8f3-9a6b6ba4029b.json and https://artists.proofprofile.net/proofs/artist/940ecd83-cb11-4f7c-a8f3-9a6b6ba4029b.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 0x6b7869f1625bc73ee83ec0c50adc74bc42acb389be96ff0acdded05e8001251f. 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/QM4DW1821594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d38d9831c1f1784367dd4b280df1017df75319f35435eb7df77f03dd81eb5d5. 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/QZDA81983792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92ec51128113ef6aad71f90bc588c3da72b8bdeaaa147fb934b8300c7fb60bb6. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:42:49Z), 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/QZFYX1951064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd73c005458b4a0a2d39e3674a8a49dd08b5aec4cefd2ea7cade6d0a214f9fc90. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/QZFZ21967532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef9e8b84729d5c6d1f67cd6e86a9d2455ef14112d50eaad6d479d2608759fc88. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/QZFZ21967531.
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 0x08596b0f84c9bbf611b51bb8317977798429d96561366eb6c883c6cb95eb6dd0. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/QZFZ21980733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b7afcd17069c00cab06af351055cb4f95f99261c6843b50dca1fd24ec72cb5c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZFZ41940685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb812a13382ce6674892f04512fa5426a1b794ed15be223e5e3f629e5c496676. 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/QZHNA1980974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0deb1037a1e795dcbd83ed39bcc28601d996477b1b8814cf945488642de00c7. 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/QZK6Q1941210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8137a820a24da461720748c0da41a3ef3803c5f8dff0bd8564c61b97e0030d94. 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/QZK6Q1941201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd03bab627e0ac6473edd60ea45d21f9c0c08674f1be9414c8b5ae617f19db5d6. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZFZ52013852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38903e5becbd71b1162a9d3280ed9216d49a31a3ca51577d42c31dd4d32a97c0. 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/QZHN72250804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09d40dd0b616d21d5eb616a7d4506e5310b8eca7ae876eaca9f61962ade25da0. 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/QZHN72250805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b7b30717a4bb6deea980147eb929044ff7683f8fd2624fe6641d4f1aeebb5d5. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QZHN72250807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3993a6f1292e7d274cae981da53ebfd3e09d33c2af43609d85b234525c45566. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/QZHN72250808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dc7c565f4bad2fa47d6124dd96cf60bd257294017d3c14822c63358ed6226fa. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/QZHN72250809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb7aaafa9237c84f4f1d25af3968b9daf92e9bc038705c24ebb922092f12daa1. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZDA62569354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x355484f58f0c9a057759318d0db873240ca4e300c29be018f237c625208a220c. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/GX5A32300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a3fd6a44ebe93b4ef3192539867403507e9ffe4f55a107b10e1b89d75b17fce. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T15:01:47Z), 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/GX5A32300023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d892c303557be9f7e0c7b5bf40614d47d50da5b43ce5de9bfe1a83c4638e1c4. 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/QMBZ92532908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cbd0b995b459f079506c095982396a15c6fe3c0ac420915c37bdce93647f5f2. 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/QMBZ92587175.
Lekkerbek Live (Scratcha DVA's R&G Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2723e59eee371dc7a5799638ed3a7ae60f049eceb9fc09001a186bf6726be5c. 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/QM42K1838796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43ebb43969710cf3f80eae816fbcd2f59b66941b28e8dd69b65da23b42a72a4a. 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/NL1MC2100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca83974b1bf9b7f82875e3a5d636f1b1957a7f9f5bff03878f4d71a17780c8d7. 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/QZFYY1964567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18cc7f7d398d8b0dc146a7ddeea2a5030f5af9382e11261f63590589a2cc0fa9. 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/QZK6N1956441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51564ce4a41972958c9fae47fc404494fc671f838ce4f2485c3ef95a0b8d7082. 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/QZFYY1964566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c3e577e8d6b383f5688e902941a6dbcf1db69d0a13f7a7f8734621c7d01e21c. 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/QZFYY1964569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5b2add8808cc80670e0d7ef64359bf12af15c429073c899c4b7a34e33068ee8. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/TCAER2002424.