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 0x32e384b0ca25db4a48d8da5d71276ebbbdc48b38b2785e820f86621907f9540b. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5ffac4ce-92d5-4cf0-87d4-ceb49f830a24.json and https://artists.proofprofile.net/proofs/artist/5ffac4ce-92d5-4cf0-87d4-ceb49f830a24.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 0x30d44f1ff5cda17c7c2b01c494c9bc43ed6624299710c97aa948c2c10e088d78. 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/CZA752157512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba53e83d766b47b33bfa94a445aef3051449cb3541bad1a187f4d5b859633c4d. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/CZA752157502.
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 0xe4890a922c17c2fbfa91b25b10a6d7d9122370f8d86ff592a3468b02038aa0cf. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/CZA752157511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9635c98d385c3044bc592e23e611ac15a9130e08423b986723ba668bce623c35. 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/CZA752157513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed07c8c005580a85b9e39fa3e2dd31328810bbf203d566c5b0991c82353a2b86. 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/CZA759705501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa087c02c7a1c1c46933a3a61d1b93c8dfc836aee6cd574c9aea9bfab7763eb85. 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/CZA759705502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8fa6471a2f24ba7f3790ad11fd7b2c67e1fb1c0c54914c2963bd6c023deaba2. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/CZA759705504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21ce8da91bfcde915427675c877b00e7c22d75e48698d5b89ea2fef7a7912895. 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/USA560317101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x156543bbbbff44738206c934b6310d2f68db99ef8f16bb78c6fcda67f0236cb5. 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/USA560317103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd32793704a6928e1faa8bd528fa1cf159c97fda2d48c62a502067358254f8c6e. 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/CZA759705507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fe65884100130e2f83f6c8f31fb0d662ce6f35460b4a755a56ada58d9460d1d. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/USA560317098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2ce16e0f2b7fe2faecf712fe0b4f1af6b9c4d5f33b488158ca02a251442e824. 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/USA560317099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3403c1d123500e6a83cb156ae56f7fac0d3fe15e160810cc18c570dea412803c. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/CZA759705503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f047aabb910af7c4ac9d3bd26ae0d53e42c3dc256d298c8cbaac754ea5402f2. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/USA560317100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x584a55ba4abfc8c564318caece42b8d0b6d40ece41401cf884de9fbd1fff7939. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/CZA759705505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9611ce8c5a30f58ab4294e0227419e924c7254e7eba9d4480f9e080b3f89b62. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/USA560317102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb04623e6fd30b7d186a3d6a3c8f9866cb0fa63784e12ca4243a068373be3236. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/CZA759705506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9881ada5c4730265b7d18cdfe376eacc2063985ee15fdbf656cbe58166cba9c1. 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/CZAV52000110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6c40b1ddca65d743e20b5fe463adac4a9af58c58845a6cfefff2743137b9144. 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/GBLFP2131521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f627f6d1f8278936c2eeb243b5992232a020baeed08ad5e8114ffb1b59ab0e7. 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/CZAV52000120.
Život je pulsující píseň (Life Is A Pulsating Song)
Jsem Hlina, Jsem Strom, Jsem Stroj (I'm The Soil, I'm The Tree, I'm The Machine)
A nebe je na tvých rtech / And The Heaven Is On Your Lips
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x341d17250c90f03ff2f3b4a203fc91018b1d813f66fc9147303c161dc3aac9c9. 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/CZA750524406.
Svlečená v salóně / Stripped In A Parlour
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa507a7035b6ac7776687f461714ac3c614e1ac17216124625c18773d4e18ecd6. 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/CZA750524408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6998ed35461ddb31603f15de4efb7314034d18cfff4f677bbdc55b64eb498e78. 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/CZA750322501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34a8e2d53db4a15b0a0f49ea9631c031eada1e0eb6fc6df0da3005d39853ff79. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/CZA750322503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff9c54c1311f67263acb1794d2628e9d6aece33f397e02030c3609ec7e47af25. 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/CZA759909503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9256bfdc9ab4d998266bd969beecef71d58d48833472e70c11c9c65506191cd. 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/USV351327142.