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 0x58d625d6f2e8fb0cf7517c2fdc1d184d10214f74a1d5711121ee8efdaf19db50. 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/5831b9fc-8b7f-4003-9257-45d8ea40816f.json and https://artists.proofprofile.net/proofs/artist/5831b9fc-8b7f-4003-9257-45d8ea40816f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Weekend Shenanigans (feat. Donell Lewis)
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 0x50cd82fd1d49302ffd021a2b4c937bc94bc9e19a33f1dbe9ffcefccaa37afb3d. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/USCGH1820145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0324832df3de8447c6cbe5c925ffe94b7020b03ae9766dc33340e4898d764df4. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:33:27Z), 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/QM24S1832465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc11880653c26e4da293ed5d214ed2302eb106705b9f418e46c5f9ea286896b7b. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QM24S1832996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19a955e44d65d4df9808c593ec81d30000852cc64aa593fcb754c164bb5e26c8. 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/QZFYY2065038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30cd73179ebdc02fcc7721e3673d5c0f470fe07d43a3309faa9e65de5153b1de. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/FR10S2022018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30cd73179ebdc02fcc7721e3673d5c0f470fe07d43a3309faa9e65de5153b1de. 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/FR10S2022018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6226fc28a4e7db20d00aa4f995df428a498158a386bfef6be8a3d94c6f4e9a7a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FR10S2022019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5f1bfefe8604656f8477d8319d0811488d1dc38340347017390b22cd865b41a. 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/FR10S2022020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c012c4103561ac254086e8cf0a958acabb4f838d4d2230f77c73eb86730f9bb. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FR10S2022021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23c1851e9b83672ffa4008e8fa08c7bc29b49f1d5f20c31ba40e6ad0a8832a17. 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/FR10S2022022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72026124fb66008f1ed52326afe8c68057b961e7b3c3202d84da42156416c2e6. 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/FR10S2022023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b9ece6338691859b1bc9710e2dd1f9941f6688c3061bb78ae1f2fe20022e344. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FR10S2022024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a24d9f056271179a3b2cdaa2eb6450239c52297536efe32077ed4faf6cc2495. 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/FR10S2022025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5c1eb91a8609901bc6aa29e2655e454515dda524bec70e82dc9242be0113cbc. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FR10S2022026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf2eb2edfa47e4e6ef0f6526de38c385960fc1161555f6380295b612fa363df2. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZMHP2074595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6de79ca140c908498f8e49f8e59f11d864710c84c9e64332e14451055a77b64. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZMHL2038193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02ad3d0c67900bebdd5ef3d7ebbdc0749ac6e9e9ebc677a99b8e9f842ad2396e. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZMHP2059799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c0472020bf0b08f60d6af11774798c66187645e65695846d193d4a26dd242a4. 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/QZES52018525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76575a54a47cf5bd16e9458740e5e9caf8724f1e73abea936d68e2c31581c59f. 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/AUFXV1900115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99f212652de62efd30565f79617c639ee6a61684efecfaf7957679242f11dc37. 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/QZDA62097443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1818ce640a9e8a03fb84273c051e5a187a1327b6db60431827aa4ea29d3f9d79. 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/AUMGB1700173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x945177effdc77a28abf5da6f793b8c1ea6cbf16cb96cfc944d0a93e3d98a3391. 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/AUMGB1600012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5e566a34e620c5b719660ccf59e207e5bad7dd0ce94e603775f42584e691f5f. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QM24S1843271.