Anna may refer to: People Surname and given name Anna (name) Mononym Anna (goddess), the main deity in Old Assyrian Kanesh Anna the Prophetess, in the Gospel of Luke Anna of East Anglia, King (d
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 0x939950e50757946cd3fd1565d761e4d976eebb3b0cfade59b378851a7e1d667c. 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/054987aa-1329-4d14-b7f0-fc1591ab57a0.json and https://artists.proofprofile.net/proofs/artist/054987aa-1329-4d14-b7f0-fc1591ab57a0.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 0x491f61dc7a9376070b2c9d716d2256eae76925e2b8103d2fb06d3473bbfc8c59. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T01:47:42Z), 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/JPU921700042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cd51c685050d9877df1b1a8ff3cfd99b4fe0232da7bca31c8fc4dba193656bd. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/JPU921600072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb85efc6be988a4977ba71352a8af21060508d0f8af8bc114d88c9d17a993e385. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/JPU921600073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa643f82f284a2daed8b7cbcce6c6a4a7f4681d224109c30acfaeb54f19235859. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/JPZ921913375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86f74b064fc87ecd1733e7130d717307ef580e3d238e028b8a2cf2248f8c5eab. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/JPZ921913378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fe41be0414bc41b07a0be909a12e2eb15f1ab079160068dc64973bd3cf70577. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T16:28:12Z), 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/JPZ921913379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa643f82f284a2daed8b7cbcce6c6a4a7f4681d224109c30acfaeb54f19235859. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/JPZ921913375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d2868a116884ff8070a3367d1fb7044693885899a7de0a1a85e77362961c9f0. 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/JPZ921913376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fe41be0414bc41b07a0be909a12e2eb15f1ab079160068dc64973bd3cf70577. 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/JPZ921913379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8743bda80612c0b45c89e74b1b5a6686e2aecd453a6bfd368f8f47161150fad1. Chain 2 (Bitcoin): anchored in block 959063 (2026-07-21T21:45:32Z), 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/JPPO02102121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cb8e501ed5102f7d221461db274323e6c0e140b62ed43cb0b536aa1838bbb72. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/JPPO02105017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9cb37916a9f04230ac941a5f91e086d18aedd177fae3350527acb2faad51dc9. 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/JPPO02304411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fdaeeb57c8d741fc24dcafb840aae51f2f9c0090781e8099efeb2039fcd937f. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/JPPO02304412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8743bda80612c0b45c89e74b1b5a6686e2aecd453a6bfd368f8f47161150fad1. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/JPPO02102121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x270baf3871cc9525d9fae74abba4354f6d9b730fbbe79d9cacaff2d52172d744. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/JPPO02304413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x484fc1730244547ae2feb0587ceb8b0173142da0b84ee07d1f0b381b91745bad. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/JPPO02304415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf12eaf5f881eada0b5d383a32d71721fd0c249fd061ca483e3d8f00d16cb746. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/JPPO02304416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8824189f9b36d76ac9b1fac4efb3b47f920eef70ff26ff456ff754655542f56f. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/JPW462541920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x134c6155631b9cf77cb412c5463b748b2492495e6520b96d32af4398c5c1ab49. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/JPW462556299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a8473f5d09c24a70947aff0964491381fcfeb92aa371f1fc301e30c1b838d7e. 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/JPW462575221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1f541088c8c57188af7957c6e8fad6f1683702d945791eb93a8fac55e52d097. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/JPW462577447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee4fe2ff402e4929d4f839ddcdb3de4a6f3811675abc39acd7da6e85b2c1e6cf. 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/JPW462577444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eab5839890602dbf28d7177cdc3a23b37e96cb3dfd3d297ed18810c5008969f. 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/JPW462578621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d99e56d88e7f8cb8c8fc0d839abee37c40d0edd00c74becd0c4791ddb3295b2. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/JPW462579535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6943c3983d276bd446ffd678da79dac2e76ca4bb6c37621fd5adcee6fd860c4. 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/JPW462580770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f64c6dfe19c4ed96754b32f10cc4578009ca2d4d9172658d66bd7456c3463c1. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/JPW462581135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46f3bd6d65fa25af378632c5304a7618ccf0ba4ba8beda8156108f92beb240ec. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BRTRB2307099.