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 0x6fa2d7f7aeaf30275dbc7b3df0ebb4e9c2f8d4bb24a5dc7869861526e29a04f8. 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/74ab79ad-09f0-4d3f-a392-5ea1d553f0bb.json and https://artists.proofprofile.net/proofs/artist/74ab79ad-09f0-4d3f-a392-5ea1d553f0bb.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 0x9923aa50374121470131329206d871c37de9a6a50eb5a3d60d9394236be53845. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:42:42Z), 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/DETX91500821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c0e60929cd83fb3b8fc4581a6666c8a6b894f302a8b44873c62672937b783f7. 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/DETX91500825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x952196d1df4b5bf9319f50ad14f8a182e7b8cbfefecac0a72f61e31644c58ade. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-19T23:47:39Z), 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/TCAEP2053882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc575f59bbd7864a894c290a12257937a81b5cf1d0fbc6f16fbd4829c8e62d5ba. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCAFD2080706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77feef8edad43698bccfb5ab3f7ef93b8f302bf93a2a52e02656705a9f461dbd. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/TCAFG2051448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27c394fa2dc340cfe319f5acad784a1ec8d9968acc22c298c5051a3ce8fd27ae. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/TCAFF2032495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe90684d50bfdfc03f8ee27490d4c59283fe535288486d01129b5de4514c014ca. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:47:32Z), 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/TCAGA2205289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7012f9552af8c6abe454b02dd441f4fd36dfcd53c68b8daf90e9cf39e2730489. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/TCAGR2238553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc5073fdaf46a1d25058771edfde3cfcff3b0e69111eb79d0129d0f4e6ba8e01. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/TCAGR2238621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14e33d35cc9f3f353e065c2cce58f07233db0ec07d95f6399cc3947e2d490910. 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/TCAGU2373090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e8abe8b1155e12f17db2a7eb310ecf72457daf35a6de7da543906c4bf728779. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/TCAGY2310449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe410c9a43ea053e1f10ef597f792d3ff88933ba36ac9886c6d9aa1c91b0aad56. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCAHA2382597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7de214a481317690b290fbdafb67fd8b0f91a2fc67388d928a92d012930a9ef0. 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/TCAID2433286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f7442c802da89e60879f858a675166cb8c4057ae8f6fb040eaca4b9e5592cb5. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/TCAIS2493447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4019d0184d044a14f3713b58309b9775f7c85da9c8e5c59892daec99afcd138e. 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/TCAIR2493464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57680eacb9b7a04c9aeb3f9d35abbd28bd28d0a2a37fce38bd59f1325b1e8845. 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/TCAHC2388200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x577475d602782bcca77f59a2200f94151480b532f7bd4fc1a9d4ee8314caaf71. 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/TCAIS2493498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dae1eb1eeb844f9e39c0d750e606420abcf0af0560595c0d1a2726cfa42fa4e. 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/TCAIS2493508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14de394a55d18e3c34da8b491006637714a47f3082220f1c764ebb27d3caae5e. 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/TCAIP2435157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10a7cca5d1bf691efde37526ed8aa270d5a76e71ce4d59690291e8d47707eafe. 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/TCAIS2493583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7de214a481317690b290fbdafb67fd8b0f91a2fc67388d928a92d012930a9ef0. 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/TCAID2433286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d19f5619e0db01957e3b9edc5cc5315db3e8cb452dd4f3fe28e26979d495906. 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/TCAIS2493612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4e2c85a74a7153333c251ce6a80554dbe0ad0330e0c02c671cdf98a642054ae. 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/TCAIS2493623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04c717ac84ea161f461e316207cc9244385c5c99294adba056824e23d6344201. 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/TCAIS2493724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe410c9a43ea053e1f10ef597f792d3ff88933ba36ac9886c6d9aa1c91b0aad56. 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/TCAHA2382597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7602be59dc669ae4ae70783f2b85d1623733854c557c6fbb94b8c8192bfa74f. 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/TCAIS2493767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f20476999ca6c1650602dbb55344da2922c53f8fa99ebeb5572edce1c1a187b. 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/TCAIS2493775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b299e118f16e3dd6f92aeead89272f9e19f35557155f9f5f3c645b220586d3b. 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/TCAIR2493780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc32af6ca0d9338f71a1b6a8b4a4cbe21390523bd222ea92a9cd7f952ce99efc8. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/TCAIU2474277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x637553be44cf423abf3f661b0fda2fde1f6e1351c27ee4ed2da9cfa49e11f922. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QT3FD2583627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6a5995df34430d7681794ca1b34824a0434b907843be705e787e23be54f40f0. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZTBC2502882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99576f6e900629ffbfbfbdc658689ce15f8ddf16425c0a6607b3204cf4dcd0f5. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QT3FD2583628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bedfa6c82b297306fecd7391009cc7a1c29d931aae66bc68475cffe07e0581f. 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/QT3FD2583629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0963ff0cec8032dadf3d27292112760f63266dc9d36577eca1f457d15f652dd. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QT3FD2583630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0daf5a6bba4644aebcf41ab378c2fce1e6c4e81da293f23516617a90272813b. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/QT3EZ2505999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2d93f0ffaf602cec10a3e25a9d173c6b440ac676526b4f9e0cc5553f90f19e4. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QT3FD2583631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x218656ed294c406001e74933e43f37e88ed420b6d132672ba31fc35aba98bc22. 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/QT3FD2583632.