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 0x8c3cb09d87ed562e92b28d29e0efccc10724ff1abb00b89458fba0b3df4ec0a5. 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/87950306-b3e6-4c8b-9dc7-9c8143a72596.json and https://artists.proofprofile.net/proofs/artist/87950306-b3e6-4c8b-9dc7-9c8143a72596.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 0x08f8d94baf48914504f03ec2ebd7aa54b875e8135c257bbb89e5dc0d8e4bd3b6. 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/FXQ892300291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96e1d4e14becdd4f0ee0ce0ae07b5c9f9178f9f989433c97726c35aa0b2eedba. 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/FR5R00906786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f33146010582e86eb245ed8268351327cad1fa5fb6172a6b66531ddc78a6d61. 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/FR5R00906787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ede426d0df358cb6fd4dee8e55deb0b0825695b29a6d6bc3f8c4d6319c6055f. 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/FR5R00906788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5e5ac761a37a0702518aa41cd79e6e85de6e4fe76c29d0d2f81729989869e1b. 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/FXQ892400137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d8bb0182a62c78a443d67df5a7c8f5c0685a262ea492b1cc619cc18e7cd630f. 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/FXQ892400095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf89392f7ea1f89d44e49a77a0957354baf668bd30586c5edcf1a01a4c478f119. 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/FXQ892400037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a1115cea528dc6385df278ecb78cf11d9bfb69957eccfa8cab5336d23502fd2. 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/FR9W12340888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe575f7e162cca69299bbd8dcb7b4e407b4adedd95769cd438da8a76de91cb02d. 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/FR96X2360306.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa240db92e9c50978a7d361817cc1f4b6bf0746ccead0df762be9edc18c85cc2d. 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/FR0Z42400600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e53c948135857c40f364ccaa6382de0c556d7064077de0294df17e63e1b6879. 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/FXQ892400241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcb4b742f7d4dd984cedddd66ccd6a0e9aa58cfa0ef1b02611ad73f50dcd8883. 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/FXQ892400227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7630a513b17524d7ac508be40e86894230ac44e3bb4e3d6424180fd23bfbd940. 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/FXQ892400163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a1115cea528dc6385df278ecb78cf11d9bfb69957eccfa8cab5336d23502fd2. 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/FR9W12340888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e7137bdd274fc3bbfb76a7f7882b21d7e30d74534c74ab48b35c8b8722f6f7d. 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/BE1JB2000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7229edcaef60895d387ae80632b1ab21a7778e960c3decee6dd1ec6e505169dd. 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/BE1JB2000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefa3be65e0863eb160de599bc58bbc8af681683584ff6bdf84ead37a367b2a8c. 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/BE1JB2000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x106785297988e0ad5daedd40c8234eeed71b6def5db6efa4af8a47b3946e32f6. 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/BE1JB2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e24fe96418e8297235c9e751c45bc03a860b10b893182d88a749f31dfb4cae0. 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/BE1JB2000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06703d7c5d0a4a60b206ef3609c6c80701c6bd4e37e695827df5a8a98b86a02d. 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/BE1JB2000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d318c49765024b5c38176c2a373bafe8b8c83c12db4ea043e3310ae647c8a89. 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/DEWO71700055.