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 0xcde85197c7eacd8700418a22106cf86030afb74f22d503d63dcad15a70569033. 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/3a37a318-55cb-410f-a375-555bef52f421.json and https://artists.proofprofile.net/proofs/artist/3a37a318-55cb-410f-a375-555bef52f421.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Bearfaced Music Presents: Sacrifices, Blood, Sweat & Tears
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 0x59b9ec0dbebecd40fe4d04309b5f613429b8f119693394cda2fae1292422e6be. 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/USBAE1304326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2efcb5ca6ab9fe16e8078a7f3334bc30c370ec28be90794ac4cf7c3d68de5094. 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/USBAE1304329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x104315612dd80c28044037e5f17c021500fe09a422480cc312c7dfc78072a05e. 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/USBAE1304331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe91e559fa34fa6818ca42548a6ffe41339c18c8842f8b552f3d2f24cfc737ce. 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/USBAE1304332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4ac7ae8a0f5a3aee6c4c580fc38ab46662ec2542a1b62d908acd3a311d7aaed. 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/USBAE1304333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69dd9aeceb939004f64adf15176a94ba80551931addcb3730bef4bb9c245953a. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/USBAE1304328.
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
Ten (feat. Lil Rod Tha Goer, The Jacka & Lil Aj)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd69a04bde0666f12ff28c460a673530001156820e2510b89974ea083af16bc55. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/USBAE1304336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4325e50dd5580967a2c560a6a6d376878e05e0ac10e3261b1a84b24dc994a26. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USBAE1304337.
Coldest Winter Ever 2 : Weather The Storm
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x502e4e76ce5dcb68c1e0e57c1d3e37dbd25f8b036e5b92b51aedf96a1d435e86. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZTB72409718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4c8f58e85d2b01d15b9cd5774cee97cb5ae56db0847886be02bbbdefb9e05a3. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/QZZ7L2453229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ca1dce53ded7af8d5d8571e5534995f44b7b52808dada06fad3e26614853984. 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/QZZ7K2407808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1e512f7b20e9828daa4bfb66c50e4474f95f9897161616f7d1df8662b52cd69. Chain 2 (Bitcoin): anchored in block 957876 (2026-07-13T16:00:32Z), 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/QZES92568657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61c8157f97964a35436cd700b6386e28a760008cd70483a8e79f0435a0c6f29a. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:23:29Z), 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/QZES92568659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b36b7b4c0d55370f6db3e0990508531190fd607604ddc5b3f29943074d8a2c4. 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/QZES92568660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b37fdf7eb752b47e2ac985ef445ba9f88df1a606c018ef531e5f31777f9864d. 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/QZES92568661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71710432c42c2b25277524dfd6b49f16a05a7d0471bbd0ce724425e12f262c7b. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZES92568662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78be43c8f6024b521d2ec22872beaecc9bc9d1b3dd925b4def6eeac9b8bf6bea. 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/QZES92568664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc50e87363dad210ee73dad550cbda5b4e0f8922372188ff0f519a84318cee285. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZES92568673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88b99a68b3b96f2e29d6cf18350a85ad94abc770f16cd36a1429aaf7fb333ff6. 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/USBAE2204981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc892870257d72dbb5d7c8bd9a9c843d352fb4de9c45888041a798c50e8b2a60a. 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/USBAE2204985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3c0fbe19cb86245962e9e3c7384ba6224f10ff91c2df3eae9f4e00664eb7182. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USBAE2204989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa523f9b2fdbfa0e00e65ff9da941e85bdd4f47987d2e8d8832ca2d0799750aa5. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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/USBAE2204983.