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 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 0x32409faadb1ec0ca97ccebe37f538d7b18da318b99b5e80115b08a0db8f379a8. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0bc36a2c-8497-47be-ae4d-a1393887cee1.json and https://artists.proofprofile.net/proofs/artist/0bc36a2c-8497-47be-ae4d-a1393887cee1.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 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 0x68010ab4dba84807986f988f0ce924a5cc08d298ac6aae10d101e458d6fe1395. 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/GRLE10700678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83703e54affc7da5b07387557d84a1309f36ceb252575136e913e233c7bce7e4. 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/GRLE10900429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18dd1e2f597e05c96b784e782105b0f04a704bd509a0f86c289967f0a31fff20. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/GRLE10900430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba19726896646c9b168188279d3c719f9e9f95383edfb2dc37d568435b0b2fc1. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/GRLE10900432.
Tora Ine Allios / Istos [Special Edition]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ec6cf0909bcc08deb6a82a2e57a98db9d0b9ad55f4f51010a98111ffca821fa. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/GRL011100208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x029eeeb7dc0f1bb48b37b6baa20b61d03d17728cebfb0044a4b2116bc32c426d. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/GRL011100210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf96b37f878221395b08eb5d437927ad36d7b5abf98f1bc541d316e59580c9d90. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/GRL011100211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x048967bc0e8908a9410a245d9284bea4e5ec6753fb0261e3a2eaec356f610cf9. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/GRCB11402035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1527378a4241a194939d5a3f0bd63e9d4d2ed5c371f298eab5cf6d8bf8ecd221. 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/GRCB11402114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dc499e17de793450179af46fa1796e964add4ed3d4fbc82503889112fdce0d8. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/GRCB11402106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15bb97253db3c13d5de4732fec41644db95a5c0bc57fc2cddc99e2ebe185c315. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/GRCB11401383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81dbb8ec717e5ce92675d4c1ab2d0c09bbf11fef22629baeda93f64f00504aba. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/GRCB11400803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaff146d86ba29f86e73da090171bdb2ee41dbbfa89159ca6be5eb031f3248a8. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T21:24:46Z), 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/GRCB11403006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c1cec5809df70db3281a84756b43d9be30fb1cfe925957b72220b5a96b47c23. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T00:53:33Z), 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/GRCB11403167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9823b79a9f7c4572656876db8620db7355b75bc30d670850184f21854f3cebef. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/GRCB11403355.