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 0xc318423e299df43401d66fc49c80acaee7d49813a03d3b5423f0616b02c89cae. 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/c25f0f54-991e-4c79-82c7-0375c0873102.json and https://artists.proofprofile.net/proofs/artist/c25f0f54-991e-4c79-82c7-0375c0873102.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 0x77eb4d4d1668b94697e92ad9e9cfe9803999ed617595fbdbf06c54f14f3be712. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/QZW9K2342657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda364711a080df96cda60f46f867f09554bcafa1105d3b45a805f623ba195877. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/QZW9K2342658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc61681d217569cbd632cdb977e09fc01f1ae5e88f62979a133d19671dca17508. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZNJY2372305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd755e909cbc1d19696c72b0e54135cd98375edfe765ed60c5ef4257939a421f3. 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/QZGLM2334820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x439cac383e384b38fd01f4a07fcde8b7813da3bb31f8ef94ad29dbd220c09ad5. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZGLM2334825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce35792966d708214529a3d5499e95472e88757eff5ceaf3653474ff3965e79c. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZHZ41969011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f6d382b54c6d5b0b4f33ac32b251cf9081b0a63583105381187e08e93a322f2. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZHZ41969017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x782aceb57f40562c25729932a0dc70196396ff2a49b340540389f2803479af5d. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:09:49Z), 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/QZHZ41966264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f1e38fda9905ddcafc733d50ed7847b5f3a5101363c29afd2a720c54eb049ce. Chain 2 (Bitcoin): anchored in block 958378 (2026-07-17T06:45:39Z), 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/QZHZ41966267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f131a33741e1b832f1509b9c9fac49a11775bbd937b0b9b677291045ee8ea08. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZHZ41966268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57172e4d1546b818662eb3d4ff65a613caf085bb349b191ea01e759803bd0600. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZHZ42204572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x625f54c319d94d0129a598b06647c09b247c4c2d5f5b823d7a6b8b362769ac47. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZHZ42204575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6849975ee9e333f4a530b291f7167fe6bd755308882a51336c1b40cac2799838. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZHZ41970234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8e5f52940e43148aaa81533e1579e1df5faac3c78553cb0058912ab40a73a4c. 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/QZHZ41970235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dfa168447e70310b6526001a8a3b192b265234be94d5abf61309e8f4935b1b6. 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/QZHZ41970236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64069b7308407012d385ee6bdafe3d9c1e89fce5a82e975c662a8348c9f457cf. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZHZ41970239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x325433eb4296770a33d3ba58165dcf679145df55cf67d9276412905ec8a26961. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/QZHZ41970240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x619d99ec9b87f5b05222f0608636d6b22bda346634d8c9d6fbc363ecb94a87a2. 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/QZHZ41970246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79d1bdfe72a2d250939f53f487dd9f38cd5ec9e555da05f498683a49784c9b53. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TCAIU2418947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd30e9a8420e6d0bdceddeaa81af6fee6d62b6ed3dbda5e05462504af547cf7eb. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/TCAIU2418964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47e4b4df6571646d88c8c5ae01fd9e814a20a747155b240a04f079a79a14b8f2. Chain 2 (Bitcoin): anchored in block 958911 (2026-07-20T19:22:44Z), 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/TCAIW2418971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x485b11063ccb337fa9357310c7e382558f2a584e80d09f80459f0e406442ab6f. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TCAIV2418986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8687188a4ee395080b17ca88f94c89b6b44fac5af59283eba65e66cb641cda2c. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/TCAIV2418988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbaad2ccc76d6b86e9d08d3ff6a044fb4c1fb6886dea768008ee58a6a4559624. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/FR6V80366189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa20c960fd7e64c0a2757002479247331e01c4272295631f1f50d7587fa8595cf. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/FR6V80366204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80783dbcfa79af82d9899e34a7fa931dbf018aaeaabe79f4b289ecb783fb84e1. 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/FR6V80366195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfac22471945ca16cf3ee208c29a1a324ab1007d03546743c8402516a0f67e218. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/FR6V80366212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5068caaaf57edfd5a54ff98d91c98dc276f640eb9e9eda5930985b712dc7d7c7. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/FR2X41421595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3164da0e41d1d320f4a7f6977c31ccab06651d2c85ad8864b0d436be36968235. 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/GBBFT9200047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x392b9e17a0839fbad9e491c7f6c6e66927facc85dfa0f0dfd42179636676d41c. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/GBBFT9200049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3164da0e41d1d320f4a7f6977c31ccab06651d2c85ad8864b0d436be36968235. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBBFT9200047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90210041db58ebc6ba22e1bad8722233075dc2ef39f3ceeda098170043b6c34d. 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/GBBFT9200050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x984bb1d9c60bb285ba0549557f41f4db334904e396a99f4d9afa4da082a211d4. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBBFT9200046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d7d8c84365701121e7723919790c5dc2f7a4e10d4ff48ccd2e4a53f533ee264. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBBFT9200048.