Ninĝirsu was a Mesopotamian god regarded as the tutelary deity of the city of Ĝirsu, and as the chief god of the local pantheon of the state of Lagash. He shares many aspects with the god Ninurta. Nin
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 0x6c949aeb39afc90abaef3daa6a09b6013eb5fb47d7f0bf26c4e3bef28d9c1d52. Chain 2 (Bitcoin): anchored in block 953741 (2026-06-15T04:44:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9adf3735-f2c3-4d54-b185-48c5711d2e2f.json and https://artists.proofprofile.net/proofs/artist/9adf3735-f2c3-4d54-b185-48c5711d2e2f.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 0xc010eed34e409d329c209ffadcad83a4ffb9b7bfb9d3a248184755bb19ff7230. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/GX3Q92444818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37b2e310605ba78b9bde5377bf6f789a5965010cb1113497bb5c07d90a1c6f2c. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/GX3Q92444819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa88c5e798ceb32be160b39b02b2ad8ad4c3be98a76ff2e1a4563f691a3ac6e3. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T13:04:09Z), 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/GX3Q92444820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccd5fd23dbd660df9eeded4774450c2d93138597fe6e111dbd9be52fa8f571a1. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/GX3Q92444821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c22a138695aba9bb5e66f785814316aa0945651892a87f491dbddf77bb936e7. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/GX3Q92444822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x603264129beeb15930df5c426198657d0aa0a4b7b80f09dc28fe1cdf5d7800b0. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/GX3Q92444823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d58efada6474fb28cdbd0cfc5c848320a8850f55ebb78ed11a8ce825451618e. 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/GX3Q92444824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4383b16eb9cb5fb4a59c1258880f9fbfaf535aab395860ea7f3548c59501c65b. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/GX3Q92444825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77a0ef77a7971d3ff9ca69342f9b4019b4b3a90b6ec53003de195abba9e7767b. Chain 2 (Bitcoin): anchored in block 958920 (2026-07-20T18:14:22Z), 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/UKXN22414039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9757863ec28ee971deb9ac65708745b7a42e42fe8090d40a5f256d42c8237c2b. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/UKXN22414040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dd3e583e31f9a70463bd70ca329ebe355195cb6041195a475372eb42ee88ed3. 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/UKXN22414041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x150adc1db7fed80c185368985571a4ed527353601cc9d71361fae62e2743dff8. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T03:52:09Z), 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/UKXN22414042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebdd8204f5ad7d765e119509945a8dcf22835ee8cc51907cf69622bd6780042d. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/UKXN22414043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaa87dd0794dc0dfaeefc0f0fb67b1daafd0fa091908316f074e56ae78dc1877. 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/UKXN22414044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d7cfb26fc3522bbcac626f97515233727fa71e70c471f2e002328e6ac600f33. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/UKXN22414045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e22c880078aee7adb7efab3ecc8a8c4dcbcb26013fd52e5d1cf20e53d6b542d. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/UKXN22414046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b877b189c1f7ed15be37a90255b1fbbedb1648053e2b9a2faef8fdeffbe9e1e. 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/GBMA22441787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffeb0c52d96f03657099087a9bd021a12075dac9a090ecc8d01aa608c01c94eb. 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/GBMA22441788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x788948deaa5f2c846c4e3f66adbbb59372fc1ed924568b07f9f2cbddf2737649. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/GBMA22441789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd075c11ea345414ec6e104bf8e838676b68d64313702db49ba6d1637562ca203. 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/GBMA22441790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb392505df2ca7a4d6430682d6421a64e1b968cd9e59613647dd0a094753d10ae. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/GBMA22441791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a9eeeb55182eaea30e4afa85548e421957643cc7cb50cfb72eb3fb5e3ea82d7. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/GBMA22441792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17972c9f0dbdb70a45cc054233cd4842cc987dc374f169de1a2dbf87c19de5f5. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/GBMA22441793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x672218ef0be7c5dfbe23bc3c101051a37b854ed85e7c1200650613f03366f57f. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T07:48:27Z), 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/GBMA22441794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72e1bd8d17c5d4848d2208cf8d6e095e78b6edc7f83261d05ddc98b2f1f34157. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/GX53U2331283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f0b4aac02da2e1efb2de2429f676697d0f2f8cffcb58db5a056260914226bde. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/GX53U2331284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3872045901692a9156e07aeb7a71ba35324880ce938fd806f6218138cd8ff395. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/GX53U2331285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1048eede840ee00a8652b0db8087eaa4ea395e00b795f19a85a73543a7825b4. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/GX53U2331286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5052555bf1f6649902c06605d9cb61a4a79ba7420e7f40ff424e1e040c57ec87. 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/GX53U2331287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe0b3851e5963b677a09a88aecbdd8c266500a21b85d298428fddc0fde631e6e. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/GX53U2331288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19be96b2903d6e60ef745ed83c1d6a1da4593e6577be355eb62055e1aaa9bc3b. 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/GX53U2331289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6e0999772cc48e375ea64055dfef0d3f2b315b4ed666072a766af78da684de3. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/GX53U2331290.