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 0x76f7f1cf30fb9ddd8c5e6ae160e9294a928eddf0bcd4cb20b3716899ea8f0f73. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/79e0a88e-b28a-4a38-ae56-26d61890f527.json and https://artists.proofprofile.net/proofs/artist/79e0a88e-b28a-4a38-ae56-26d61890f527.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 0x082aa2a32803b1bddaab1a0a463ca062e027a0c0a8d506e976681b61590b2e25. 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/CA5KR2481319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6b8477de973500c82af2ba3f1da38f171cbd2fbe93375b031e4b388d28fd2cc. 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/CA5KR2469792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2042d9a249d286f10544b7395540bfb448d84309a9e92926e294f104fd12b56. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZ5FN2499235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x977fe103175a9c160a5e9a29a3160bee7d48fa977d44cb41a2bb7fa037bc2967. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZPLR2367091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb37843370cd1779e884880cf5c0e63d416ce24cbf5df4c30a372594abcfa8f2. 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/QZS632315779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b0743b2b5c2e9cb8bf6c0d75ee4df2b2b132aca739dbb93164af278eccd6ee2. 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/CA5KR2338618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2c449d48b0ba2bd3d19648eecd865010084b9e56c0ca6f8d142be4940776486. 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/CA5KR2338619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x323a64da56abeb31fb4f6be41952169ca706a0f9c964cb683c0774674af9c0fc. 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/CA5KR2338620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x808b859a2a934128fe48c81fc91ef0ad858850419709ca5ce99df8d349308e07. 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/USLZJ2376010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabd7cc0a7a8136fa0c6d4e95835de9a0ece2dc16563a3f15e014c14e01fb7765. 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/QZS672279651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebda140ac3ec49561b2e00c20fb9909017f496ca76341ca214bfe78850fec531. 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/QZS632276631.
Denizens of Donk (Kylljoy Re-Donk) (feat. Kylljoy)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa317a78e2fd0914ee940db514e065da094034239f5439952f39c9b63e3b9612c. 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/CA5KR0024805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39f8d161c4deff6f0124af2b562b0022b265d6466c7291680b434295aa840483. 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/QZH5E2124046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa961bfbff085218e45eaf7c890a8fcf5cf9bf5455a321497dffe531fbdb27f1c. 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/CA5KR2121841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc73c589cf907c50a0a79a26c7bee3ab7ca04ceffdf8a82c5651b3f2b73afe571. 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/CA5KR2115868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b3cd875f81c69e70139f43a3e573d84ca64197743fb85034a95906f990fa693. 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/CA5KR2069552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e85d8a4b73b89cc6e98ddffda5786c5e30df72e109d50444fa1c49b4f8447e2. 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/GBKQU2025095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39285982af8f0652f7a6191ab1c0492e9d0ab14c0cd21c065f5da50476a50968. 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/QZFYY2072260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87a1a954d4f67ef78d13cbf97b1e682f4dec17c1602d0f54b7e74d3af32b175a. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/QZHCR2000149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d526e2e77d0d9646c0816558d3c2dec3bacc5360372c020110f367409693b49. 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/QZHCR2000154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58e2ef9ec5a35bf4c8f55606101a3fa4eb610e1f6ded23b5396a7ab5e3982026. 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/QZHCR2000156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe154048237ef1c102212d320dd7f1f944460b9925bd7144d2f8a9061ae53c802. 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/QZHCR2000160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cde0a737b2c137ad544ee05fa1bc885b9113ace49b4995842f9f7b0d0b9f7d9. 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/QZHCR2000162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4663f2d1b2e74c5034e6495a199cd333efcf9ef46798ba8b3e900a86937a9359. 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/QZHCR2000168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f7dde199185f958d6c3647d3df3b07c1433053dba398ec91ec57a84645b01d1. 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/QZ5FN2499151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae9c47eb5cafda5a8a6cee69184d35e77c76075b9587a4f27f075347ce004c3c. 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/QZ5FN2499193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a4fc7de2460fbf9d80edb0082090c387c0aa8751fd8697a939e44cd5e2a664b. 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/QZ5FN2499219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2042d9a249d286f10544b7395540bfb448d84309a9e92926e294f104fd12b56. 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/QZ5FN2499235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae315c2e269ae0b91093ed46d2c0f4edeb895b8edb1c263a74d1bc1f1688f187. 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/QM42K2252737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb44d8807aa53f3ecca1ea45b453915229d613b6be310afbf5379efa1917b2f6. 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/QM42K2261052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x837a0d9ef12205c10d152ed08aa4e9bce4a31493ddead7bbc84dd02f22505be0. 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/QZKDK2290214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80f56141c8d3c9a8902bc8898f83b1f78c20c182dea1d75707282260755542de. 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/USLZJ2380747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x808b859a2a934128fe48c81fc91ef0ad858850419709ca5ce99df8d349308e07. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USLZJ2376010.