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 0x07748cf08be84d22f8c12ebede7cd5617698a479015cbaf36772b157df748768. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bd2e2588-eb5e-4f00-8602-4cd51d361140.json and https://artists.proofprofile.net/proofs/artist/bd2e2588-eb5e-4f00-8602-4cd51d361140.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bff92fd31e363ec7f1b4f5846d394271b74b31b4f2a47e4d3296586357d0453. 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/BXIV82428665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc3319c10ac0e0ca16add10fe36532846347a062440086699de49e0ccbc2ccb5. 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/BXIV82468912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0398d13c750cac651578becfce46ed829e0c3d4fe7ed2a3afc87b543f10d6d3c. 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/QZGLM2354473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45046c8e9ab9fcb257f5af58b5591954b4a4a5270c8ea0f7c78a1f37415e374b. 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/BXIV82493902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfb32966ff61ba74367be0c75eddc83a92f86d776f8c83d1307defa3acdc93ce. 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/QZTVM2269102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17d6993a0e040c396cac63ac2a08b42dd18618a8c57e946d4faef48273f2c00e. 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/QZW9K2219893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d31f4204a04f4f78929683648d7c8097d62354d76eb2d1e926f37ee7423c5f1. 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/QZTVM2269174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a7c95989032bb4bb0c7a627ec7d3a91634dc1e72aea214589817bcd5f13d89d. 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/QZW9K2365562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe3f4916b7b64d678e5f20b19e778cd15f4dc8cf544485f913d318bbc79748e7. 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/QZTVM2242678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c39da0419cb929bef6eab952af58c380489525bcb8092b4a629add893c3c16b. 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/QZTPX2127513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae14423bee60264a5d5c45f4758bfb23fcdedf1aafd842d6a3ab128c0446ab55. 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/BCIOS2400036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bbbd1a96d26bce6a49a4cf1eb36c11fe62c46d219345beed2dc6f70a55e2208. 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/BCIOS2400035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd69efcf4d39c86a4eefa41813def8476ca423e9c2b576ff2a9e348914b872198. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/BCIOS2400039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97c79575fc7d9d1ac1f112928eb50f936032e6ba737a820009aad37f1b30fb82. 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/BCIOS2400038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4566dbe27e87aa74fd89c20d7b6dd1336716672ead9d466ab00537fcf9bb408d. 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/BCIOS2400037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37f8ac878f1a5e2af30d4af7f40ed0733e61bac0b41f8a637f5d15d1e9a09470. 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/BCIOS2400045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf26e7150784d2908f125d6829d6a1a2e3b260a4227fdf7d73679fc1b38dd9b71. 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/BCIOS2400047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63be3b3489e7570056902b3f1e1bfeece577d832c56e1929f4b48d669751d5bd. 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/BCIOS2400041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0552caf19aa0416f2971b97dd6f20fdaf394bd6482ec8666387e299b4e580e1f. 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/BCIOS2400040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59a040ee96984531383880365ffa63b3f6553680b3d1c8eec3af99cf90b68277. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-22T00:55:10Z), 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/BCIOS2400042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb5df180b0dd780b28cdde28093efd28dd3b2e0882b5753bf960a17cc38c214d. 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/BXIV82493811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a999f2197eb3d88183c5e7139fa30dc7980b05e4647ed4d8168539ba628d5df. 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/BXIV82493852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b7e37c2ea429ceee62f4bb99911eb6e96327f10510b716f6e41b88f5a6092fe. 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/BXIV82493862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd3b3677291c6eaf73d784b41b8338c852c1a7052b143bc6e8d9bf1ad159d046. 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/BXIV82493873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x984c740af9dcb75affa0a576b096a482b6d95d13bb5ecf8b1eb6d408afa2a09c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BXIV82493899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf89bda6117ae1e5db8fa715fc770d78cdf9764f7a496ebd9ef8a3cd908a5018e. 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/BXIV82493907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4c82b413410a303bee74a2d81e322f0766be2241fbe1a3059146079f91eff2c. 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/BXIV82342040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb5df180b0dd780b28cdde28093efd28dd3b2e0882b5753bf960a17cc38c214d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BXIV82493811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b7e37c2ea429ceee62f4bb99911eb6e96327f10510b716f6e41b88f5a6092fe. 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/BXIV82493862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x984c740af9dcb75affa0a576b096a482b6d95d13bb5ecf8b1eb6d408afa2a09c. 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/BXIV82493899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf89bda6117ae1e5db8fa715fc770d78cdf9764f7a496ebd9ef8a3cd908a5018e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BXIV82493907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bff92fd31e363ec7f1b4f5846d394271b74b31b4f2a47e4d3296586357d0453. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BXIV82428665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc3319c10ac0e0ca16add10fe36532846347a062440086699de49e0ccbc2ccb5. 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/BXIV82468912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0398d13c750cac651578becfce46ed829e0c3d4fe7ed2a3afc87b543f10d6d3c. 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/QZGLM2354473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45046c8e9ab9fcb257f5af58b5591954b4a4a5270c8ea0f7c78a1f37415e374b. 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/BXIV82493902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17d6993a0e040c396cac63ac2a08b42dd18618a8c57e946d4faef48273f2c00e. 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/QZW9K2219893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f87501f60b4d33f1231b9a38d0877ca101773ef026fa4127bb12454d9e1c0e4. 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/QZTVM2255440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c39da0419cb929bef6eab952af58c380489525bcb8092b4a629add893c3c16b. 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/QZTPX2127513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d31f4204a04f4f78929683648d7c8097d62354d76eb2d1e926f37ee7423c5f1. 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/QZTVM2269174.