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 0x652c395e19f1d5cf35b01aa63feaadd7a7da9a71955c03553055a0ccecdd4a9a. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/839eb02f-1b25-43b3-9321-213a4b86ba16.json and https://artists.proofprofile.net/proofs/artist/839eb02f-1b25-43b3-9321-213a4b86ba16.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 0xf97c459fdf42892a7b9aa6db80a4f22e6702fd80f6c8482b13f19c988a13036e. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/GBSMU8148002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa59b285d889b07edcf76d169f8edde269eab06f07c77d428ac3a364504640a92. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-21T08:39:09Z), 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/GBSMU8148009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75a26c82e6d33112677276c80a9119e10f70ac792b72fd8ead782ce0bfb6d951. 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/GBSMU8148010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa92e5c96a5dc7b8f93cba77cd1305094cf436adfe3b37de3914739cc313efe6. 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/GBSMU8148011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4106cb8ad134dd975b0e8b0b052f6a1d4f183c6d311085125abdbd5721fdb7a. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/GBSMU8148012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4896091d6687b61e3f5c3474e49212faf630f1371a0eded1fab183229396fa63. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/GBSMU8253064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f261ea0ed7b1678ae20cf9d13cbab433e0bfde05793ec765d9c6c88028e0293. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/GBSMU8253065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96b6e3d89d4164697277f0dd8b669eb06899da06fdbaac2c295e6b717e2f4015. 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/GBSMU8253070.
Rock and Roll - Sangre - Sudor - Sustancias
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b0ec944d3c066987b5be20d7afe010be86335c845d95fa85e5ac987e11b4996. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/GX5MY2151803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b107718cad788a5cfde5f638c11b16d97d91b7b40485891011096afafd415f1. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/GX5MY2151804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4c2f49c8810e18e3d668d153c35c2deb336d96d7a0a9e8c1d1dc59ce0d73fff. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/GX5MY2151810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7449e7f392b36eb0ba577a6e629f5cf7238084cb8280c85ccaafd8a3330cf80e. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/GX5MY2151850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa895d2bb696373a889d08dddc45dda6b4e98f2968fb15c59bc04fd239c653db0. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/GXFHP2426617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d832305e3b70fa3edeed12f3cf1de59853e1c5c6603005d1988f04d919abe34. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/GX8LE2566210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9bc87083e141bb65fcaf7cfdb431368f258538c064a405551b9862fc520cbe7. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/GX8LE2582140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x674b2740172864f67848df3b564a448935f82f25d9046b139ebeaed90f07ad12. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/GX8LE2569984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20746a312a863bc0b35271c4a97059108b2b6f700f0e1f06811eb34fefed0628. 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/GX8LE2578841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc4b8edfe234d72faa65c066ffe938ea7f7f41baafc9d6516a9cfda33a53bbe8. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:52:31Z), 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/GX8LE2569523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a1dac0840e19f76ecc8deaa0e22ccacbb57709210d84c68dd7c78f5c34acc45. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:02:47Z), 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/GX8LE2524804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3f61e05226abfe0e217925585310318fac613812dec3126fa29044454a41c97. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:10:26Z), 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/GX8LE2501524.