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 0xfea00edd07fc770755927442f571e67cc84e30da611101247188a2a6ea72d9c5. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6018143a-35f9-432c-805b-ba7a1781e2fd.json and https://artists.proofprofile.net/proofs/artist/6018143a-35f9-432c-805b-ba7a1781e2fd.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 0xbc58702b14a9d24edc43fbe7ab3a1b28b0f9e7f0b6806e70855bf62eaea225d2. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GXBAV2444930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a6d812c22af2a5778c1be60e0a04968f8f4c563e0649438d85fa02b13c27b6b. 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/GBKQU2546107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb401c248855471a75579d12b540cf32921bfaecd6491078b1e80121428cb2690. 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/AEA3A2592677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1962ad00f34822e70bb3452c2ef4299c7295aa423c52315df88be1d41d7c916e. 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/QM4TX2505680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7087e6d14d850dda49481ea56f719b97b3d47a22734b5a42e1ad75e137c83bf1. 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/GBKQU2506968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedc9a43363548f9f4ea289b3ad73f2ce79552daa14215c6d1ede65ae22f02b04. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GXD7G2250294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcaaf2d4a645a5aaafcd892c3534211afd5542459c7a0c39fa6f370ca2ee8201. 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/AEA3A2491295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2152bc20f8d250114db997f8d765de5833c639c520bcb7ee0179c49fb65f5fb7. 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/USNRS2443663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86346facb919dfda2138db4efbd0d03d55475665aec130b56892f719638bbe3b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBKQU2452159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa55bd742e4b299116a7909636a88774e3118519d9067fd3b932bf07c507c20ff. 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/QZHN72444720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2285e55d12f38afc643977b2927cb5b49f113b8e3c6657b003720d6134bf422f. 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/QZFZ42406729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14483f3474f44c134147250fd8535557ca4eeade65a8476d674b2615f0e038ca. 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/QZFYZ2430162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x085b1b16c49763300e0d3aa8f0754a18b21e4c9e375933f5fa6f81369bf78f9b. 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/GBLV62308616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53fe60f69cf7a830a8ee78b29698bcd9c4322d72814ddffe44a1cb2310075f33. 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/SGW502313983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93711ca6ccc476769217cf880207ebdd56c7cdd1df889d9be1e7e9ca6508ce13. 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/QZHNB2302639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcc5b29d1054aeb44502e3a40dc8de3cf192f5827e7989db01a26cbc111de091. 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/CA5KR2332655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec79be6bf22e33f7c898e243b0149c8d2962709522f652827e900996d1ad2736. 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/FR59R2215958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa96a69142b87f8a95311d92742212e9f95bae1c35ab92455895342c901569bb3. 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/FR2X42206312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x045a1cca663c048b414b475a12620a301cad216da2790f7dde96cca5b7bba629. 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/QMFME2130291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d75685408ee0ed2e6adf1b2055e4d1098b42ae8e8e3825cf2762d2822421124. 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/FR10S2176032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa706b1e9ee65dc78f22881f3c775b7b6aee710056afb4a5f8c197bc7dfcce9fe. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/FR2X42121542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x085b1b16c49763300e0d3aa8f0754a18b21e4c9e375933f5fa6f81369bf78f9b. 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/GBLV62308616.