Sasan (Middle Persian 𐭮𐭠𐭮𐭠𐭭 Sāsān > Persian ساسان), considered the eponymous ancestor of the Sasanian (or Sassanid) Dynasty (ruled 224–651) in Persia, was "a great warrior and hunter" and a Zoroastri
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 0x9495291a3a32ea761bfc9b3c18c7236f3fed7c89dc07d1447f4b6fb94d759e23. 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/9a05bbf3-3ed0-4442-a2f4-014ffd19a595.json and https://artists.proofprofile.net/proofs/artist/9a05bbf3-3ed0-4442-a2f4-014ffd19a595.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 0x1f587477ae6fd10f8074b2819175d74b9ba68aea68ea551e127193e061089de1. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/CH7812042561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b0b7bac5e42b738dd842233f29c03eac108a8c1ee190de6ad7a559b17bf72f7. 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/CH7812051875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed75b0babd77cb9bf47a1579a1d49fc584584cc8b2c829280032d7648b182d06. 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/CH7812214227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0f5d7591339c609b0a689d1601018b9a629b5f843fbe321b33c2fc1ed14e4d6. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/CH7812216440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b83d334486edee7f463b0aa56f1641efd496f53a9d6d08af7174d530df046a7. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/DEA622301615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf954256fd9d85deb40c383a5d697abd361554e1f7fa08029958ac98a3d03ec83. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/DEA622302144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92beb3088cdde8c72ad68be966f0e7dcb092ab92e0b70a702ae41cf831a3a4d4. 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/DEA622302821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8284965071b82a98342b4d9965ef15d2a4b3c8399ba5c572205cb6a8609112e. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/DEA622304120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7569dfb3c773c056b0538b98c7377559989f41c1945a5e517226e86ba3b12fb2. 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/DEA622400784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7569dfb3c773c056b0538b98c7377559989f41c1945a5e517226e86ba3b12fb2. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DEA622400784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a90d4187fd367ae25b538bf9056ea10a89cfbb973829cc4a76feb072f0851be. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/DEA622301260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76f37cd3afbe90718826520c9014dcd1d4e835d5035ad5163a4ca5c995c09743. 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/DEA622401854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b83d334486edee7f463b0aa56f1641efd496f53a9d6d08af7174d530df046a7. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/DEA622301615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8284965071b82a98342b4d9965ef15d2a4b3c8399ba5c572205cb6a8609112e. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/DEA622304120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf954256fd9d85deb40c383a5d697abd361554e1f7fa08029958ac98a3d03ec83. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/DEA622302144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4384d5979620ab0b19793ec1189a764d411d317a7f0ee8b1a30afbb81ede22e. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/DEA622401855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2958e0a1f21a91d0e6784216ceaf38e54011c1e2be1560985e4d09f6d489ad59. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/DEA622401860.