thumb|Sara Landry performance, Verknipt event 2023 Utrecht The Netherlands (description page) Sara Landry is an American DJ and music producer based in Amsterdam, Netherlands. Known for her hard techn
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 0x13579a559036ab358605e0306683ba16f5448ece76afea0dd5c55c0e9c0c1477. 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/6052f983-6570-4343-b929-cf9bb24837fd.json and https://artists.proofprofile.net/proofs/artist/6052f983-6570-4343-b929-cf9bb24837fd.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 0x65f307214278f333efb3972b903ceae9a61172b231e301c7fa85211ba57c573d. 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/US7NS2000027.
Act of God (Inspired by 'The Outlaw Ocean' a book by Ian Urbina)
Act of God (Inspired by ‘The Outlaw Ocean’ a book by Ian Urbina)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd21af77e8c3f8871e589ea144d6b966ffa020bb7ee39a33bf688cd2c304c48ca. 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/QMGR32044800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee2875c26c4f29175c584459b4c463942c3a0d83de8cb2012338c31ad6ce80e4. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-22T02:27:42Z), 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/NLCK41077590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77c72c79fd26839162a6d9abff07352190b23e313e854464c065ee4b7c91cf13. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/FRPZ92114230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x753e156ec2a574a79b1940d49951a311269d9ea9faa45eb616d7506dcb8a7efb. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FR96X2225794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80c364bd6bf5143228311db402d20d0009f787b3e520c77a2fa8dd6fc1a208fe. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR96X2225795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f1d0bed49e8de0d26b1e4f4025501c09cda80f68b629f3c0987c5447e533df7. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR96X2225796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49d3cae72054f9ac3d388ba490a88ead1e4f1a2a7415a78cfe39b9828d5783cc. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR96X2225797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff7256b5528097e4113403ddb4c0844d849f34bc7da2cd4f8977eff2290858ec. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FRX452387356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x275bc72db5824208ad9ac611b5551ac41623e92bd5c9b0a92d84935255e1b82d. 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/NLCK42227136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x950947d16054d693fb8d354cd9e38f9a7fca3a035c3d5e7454b21dcd13a808d3. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DGA092443446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x456af7d0393ee5639433d1bb0d63e7e64be0fcc1fbca123ac29244d4f41a8b10. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DGA092443444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9671974993a4a6b41932e4fc87cc3dade1a2ee273cb3ed1b40dbe775e49058fe. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DGA052480076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x288a8535932695a6851d0607ef97e27a4ddf33b51df61b5849ebedbd12bf6dcd. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FRX762422912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd37d73e1b39b8e901d40fa00791b65fb32d79ada6280abc53434aec48d3f8d9b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DGA092432220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37a52520aafb12cb1a8b3d5876fa6ff5f5fcebe4e5debcce41126d40098d2da7. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DGA092443445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x364f29b243675eb170eff6ad80e47c4e0c818e11bcb5353c8ed6e7f76d243092. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DGA072454912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x950947d16054d693fb8d354cd9e38f9a7fca3a035c3d5e7454b21dcd13a808d3. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DGA092443446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe55a96d1fbb6a4b832c869344c3f4dfba184783fbbcee02bbfbab907bd6e3c10. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DGA092443447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd208e03779b373521f290f8d1b49738c4901e5e0da21238f25b021c14ae7d179. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DGA092443448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07dd4e2403869de29d713e523d48f08ec283c82a7329cf32f290046ef4cdd83b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DGA092443449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22eae1376f9b9e1388bc5ef489f48a60c29a25b363bcba08339c9384b3eb4964. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DGA092443450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x489838e7b7a8f1d93fafc189b6e7831688f2e9ea5fda7adc6e0187cad88c2a77. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DGA092443451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe55a96d1fbb6a4b832c869344c3f4dfba184783fbbcee02bbfbab907bd6e3c10. 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/DGA092443447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x489838e7b7a8f1d93fafc189b6e7831688f2e9ea5fda7adc6e0187cad88c2a77. 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/DGA092443451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22eae1376f9b9e1388bc5ef489f48a60c29a25b363bcba08339c9384b3eb4964. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/DGA092443450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd208e03779b373521f290f8d1b49738c4901e5e0da21238f25b021c14ae7d179. 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/DGA092443448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x456af7d0393ee5639433d1bb0d63e7e64be0fcc1fbca123ac29244d4f41a8b10. 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/DGA092443444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37a52520aafb12cb1a8b3d5876fa6ff5f5fcebe4e5debcce41126d40098d2da7. 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/DGA092443445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92b7d9ced25f14d1ccb2dd3abdf83019abf0f412364644b78afdde956b99ed09. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/FRX762558769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x275bc72db5824208ad9ac611b5551ac41623e92bd5c9b0a92d84935255e1b82d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/NLCK42227136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77b29aed43134b9b36d3cae68579e2bcb71c5d38af30d8e5eb92ef116be19b5e. 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/GBTDG1301638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9ceac83f10e2f2f294974fe8d37d8c38f345f59e5d65bd6468b91ed415503e7. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:53:12Z), 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/DEH742170900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf60b22de783c86fcfa6aee3cab4e31f68f591e5d1dca744d726ca8a562bc0b0. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR2X42404624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x040073caf6ee26764bff216e5cb3d165f7d388d69b76c2c6bcdc8f8f984fd8a3. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR96X2135696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaad7127f9ffc99c8e41363477b8ec4aa10b6005515f5f687f1d80f2a9a2d5a8e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BEN582200237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c94172a9b503ce081f0647c7a26afe8b703668e2ca4253f9c4af96fdf75ead3. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DGA0M2376618.