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 0x842c2059170e63134f34cdbcb48a3f9e00f8f736dbdde70cc6ed2e6e1d862b71. Chain 2 (Bitcoin): anchored in block 953614 (2026-06-14T08:40:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/177b20a7-6875-4776-8cd3-613319800305.json and https://artists.proofprofile.net/proofs/artist/177b20a7-6875-4776-8cd3-613319800305.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 0x9443d3325ad5b188ddd8ee211c9ebe3876a71cb48354484fc8b22a23839f16c4. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/SE6QE2003894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1134477195537d31b1fdb6fcf0f37b06d08349fc135323f7e83577c3c83e079. 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/SE6SA2341279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97d7d66ebc82f7e4a2ba677f5f850300cc26f1131dad067aed127c59a0aecf44. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/GRSTY2401646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf30a663330a4e1dceacfc4bfc552181960eae365d450d9a0c5fcff64130e32c8. 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/GRSTY2500783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb0062be6a0ae8f9f98213551ab56dd61c38b1c58f74421296dd9c810339acc6. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/GRSTY2500773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bca8e22b97798853aa04b5e377fa9d4fe0b1f1b64d3fc771ab985b84ff70f73. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/GRSTY2500774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b83041ff4e165274b4dff5940e6227744002a5173baa32fb0fb82b040d9fa27. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/GRSTY2500775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed0707b02f853db3cfc23d1dceb4d0b1ecc0e7a842d149bb7829077f8057245a. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/GRSTY2500776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x063c079698a0299e30190315ffdea2551168cb6b14001e525873f8397947dff4. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/GRSTY2500777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d4f31c2f25573546befcc553283985f0171d9c5505de87dabb2ab01b5f5d287. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/GRSTY2500778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbad522498f27594661d632a64b46fe6d862f3cc7d97ac13d97e261cc6509a675. 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/GRSTY2500779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc576e118a92d40f37dfab26d6f9efe730730be5add2214e49830d8cd8d0e1d4. 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/GRSTY2500780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd658a24fcb59cb68a2f43cce2a5354e2b8a70180d557317806ed1d0c0edd2261. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GRSTY2500781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dbb2bd540d6b5150c1139b4324bd97668d8a18c425e77969a6f08f8fcbf8a80. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/GRSTY2500782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf30a663330a4e1dceacfc4bfc552181960eae365d450d9a0c5fcff64130e32c8. 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/GRSTY2500783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x325a289f321be1bf43c3592895319daa0a4706ea2f7d9de0e95ce5bee5c77ec6. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/GRSTY2501072.