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 0x255c36567877b8a2bc1a8f96aff122fd50c6fc09e8c667cef59bc363f33779b4. Chain 2 (Bitcoin): anchored in block 953759 (2026-06-15T08:04:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b447f0ba-4e40-488e-ab0d-714f279fcfc2.json and https://artists.proofprofile.net/proofs/artist/b447f0ba-4e40-488e-ab0d-714f279fcfc2.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 0xefd3f6bfe85891280f4bb3a54a52ebd695d74f7295a9541bcdba140966fd2325. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-21T08:36:36Z), 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/SE6HN2445066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52d6fe47ed1335542b6a23712b99d3d78e2010495d9a3c1dffe77fa1df0c9d09. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/SE6HN2445072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc93060e4f9613318d5e922409e37a77079ba6fab57666e62647180784914e194. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/SE6HN2445075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01fde2986e2250a62d4b8831bda8d9203c4019940b4e5489b2e7a01740877697. 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/SE6XX2518691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf71988b86e63c7603c49d969e3306a12c9bc7f23705dde7cf36028a72c013434. 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/SE6XX2518692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cbbf8442463d89530e927901c0c18c2d5b5c6067ec6a98fdfb5890b46ad55d3. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/SE6XX2518693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63502c3aa29c7eb75ddd98e88353d8df994ec3742a4b5302309f125b12e74312. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/SE6XX2518694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76adbb7ac36f7c812e49a6a246f2b4b9efa02bd1064694a484d3da646ac8b8d5. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:27:04Z), 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/SE6XX2518695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc054c146f3156a072bb21a2ef6a787b050dc2ab9f00393af2e6d05da4f42bdcf. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T21:00:29Z), 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/SE6XX2518696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54d371a4353339b44bccd05bccf053f33329ef94d9da82b99ae7b60f8d1bd5bb. 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/SE6XX2518697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e9f764311c90d9c050ef0eb2c5e04afd4a6937086c70788105e0ec29a4ffaf1. 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/SE6XX2518698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42454fca66f38ed431322f0ea26ac4d0b7ed5a2f5b549e8d125785821d1388ba. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/SE6XX2512290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x399fadb9feaa25152dcf298dcc51d6530e4f0b14ff16014336eb9b68724e9fa7. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/SE6XX2518699.