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 0x7b7dec6e0c913f4c364e0d8b0131bb68f19a439f999948c9563cd6ab4ff26296. 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/35186c10-a369-44a3-be48-78c8a228aa02.json and https://artists.proofprofile.net/proofs/artist/35186c10-a369-44a3-be48-78c8a228aa02.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Las Hermanitas Calle (Banda Sonora de la Serie de Televisión)
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 0x581cc9cdf5e6a210d94f2f48fe25a41f7e9318d534ffe226ea92fb9dd294fa41. 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/COC011531163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a98962751fa4c4f6a73eaba70a4b32934d978cfbb2f810f8e6cdf99ec711dda. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:39:04Z), 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/COC011531165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x711320072597c7ff1a4751c6f46a9ea3e9f07cf26fea08e4b255dac50f9ecbfe. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:47:26Z), 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/COC011531166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac13b7ca70d2c9d05dd4a21bbb3d530ea45006fc53866b51931106839c2306a9. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/COC011531167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68b68b58b660034fc6bc8769bf0bf09e994e881749907623604a46f9d222838a. 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/COC011531168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49e65e2e6f3c67cc77f615c6cf4edcae01d46823e5e11e790e34a432377c5ff2. 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/COC011531169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01f7cdb1ac97f2fd5386d6b7eb8df937030b121a57f41a3fc3a82f7b5965d369. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:22:33Z), 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/COC011531170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc063ccc78215b440f2b183f3266f5f3949723bffb2590bd0d165a9bc52757a5a. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/COC011531171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5f9aa1e6d2f0974b5c94e2963c860cf95ca7aeeb9e436eeb96cf6786781a142. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/COC011531172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b1dfcb24904844636fff85356f45145374a124f0aa3057eb808b9a84e204c6b. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), 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/COC011531173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b39dc0cc198f6df25fcc0ec550d24a2aa6e3886da50bf55185e7254415dfc1e. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/COC011531174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74b129004195fd645f208d89f74a5763b6a8328e61a5747a42fe0792237925d4. 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/COC011531175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeda8045ce1c9059224561fe2219f4df26671762dba1f52825ab10a62f9403dd1. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/COC011531176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x361879bca1b6e3e1e67893cf3cf42984e6664ffa7142d38601e231061c1af4fa. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/COC011531178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5979c6b98163c2d23e824bfcb4511845cc42317e97d8a0104c7fc2f486ea7806. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:56:41Z), 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/COC011531179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc08494ea6e9565975271d84fc565e5c73dacbd35844a220fbbbeb2fd1b672819. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/COC011531180.