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 0x2d2019099f0ed9b2d3a0d0e37240f04ee9c289220c2e21e75f0c34a349ede1f0. 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/5714d354-1e7b-4085-8d4f-9141479ba8b9.json and https://artists.proofprofile.net/proofs/artist/5714d354-1e7b-4085-8d4f-9141479ba8b9.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 0x60c9b9e5e39284440aad1eaa1d9cea0b5ec49b3ad1fb74bf4b7ae2ba169bfea2. 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/HUA6V2300598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5b6d9d3b3f2692d0384e6f9543860b60175c11849f83b05b9a3076873478370. 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/HUA6V2000448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93214ee1d9927896427856da6dfaf516409b75a3803cfe46c5b9acd3e861eb5c. 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/HUA6V2000446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d6fab6b1897302cf841cd6c4ca83e69aa135e199fa0e193c4d7a6d9cee04161. 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/HUA6V2200550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x639fe8d5536c1b8021ade6df9ba785cc323036edf0827a5b0cb99175856e80d2. 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/HUA6V2200551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03630b87852477f2391d2db4bdf61037d50e39fe1d34ad2bec61185da09be991. 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/HUA6V2200528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5c0b6f842c0c6b98e697ac8c8aa33a9d2bd90c19ae81f902fbc4ac76fe49402. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/HUA6V2200552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfef1aadbe646e2a26472c241c53d4e951b827886d5977cbf89bfc3fd6ba7ac9. 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/HUA6V2200553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3900eabe15ed8ab1c98cd3b043c802f63e51e5eb234d238d3e0f2e89aea122bc. 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/HUA6V2100484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe151c68e2208fca58f1ffa82cf084b1898036aa7b8b1c676fbdea7476524b1fe. 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/HUA6V2200554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93214ee1d9927896427856da6dfaf516409b75a3803cfe46c5b9acd3e861eb5c. 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/HUA6V2000446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x276ec79bf66c29026f4d7eea46ec828dc0dbe3e143f421cb3da1ab73c82f1216. 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/HUA6V2200531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3206113407a22a56971310b1a8a751987aef2caf5fedd019455180bd18fe337c. 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/HUA6V2200526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x974671ff36228b4a03071de548e681bdb853201f9a16da32e58ae1474d81a050. 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/HUA6V2200544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fe84c6eeff4bc8203e5eab672d5002b808ae79e29ae9908dcf591c318cd5e76. 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/HUA6V1900290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9084bd1ceb8dd1a002a10a8c42edf8297446c9a8e288214926f0e31e2caa206f. 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/HUA6V2100460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6768c91bf817198a4e534255bb1e5de641042eb08f20fb8f92467960affe528. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/HUA6V2100461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33081885cf0833a831afc5a4706156188c7c6c10c7ab1398f088a00bb00da9ec. 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/HUA6V2100462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23e530fb3515505316b3ef22c40dcf9523886e78772d39125a3496686c0b6226. 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/HUA6V2100464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe483148cac0ff39ad94da8353dfa65a74af867580992604cb5be5a77a801b4c5. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/HUA6V2100465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a44925a79e5b9797217b3ee70e179a89231c60bfae012c958a8323a45cfb0a2. 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/HUA6V2100466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41d370430d4ff5b5931997637e185805ede83e82fbc13041daf5945fd3de5344. 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/HUA6V2100467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e947f342549828fa158446befd6c607561540b21b9b2e084116f3bba0ed9887. 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/HUA6V2100468.