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 0xf550ca0c630e36d51463428e35ce7d261f9593dd136bb760e806770b5164e3d9. Chain 2 (Bitcoin): anchored in block 953819 (2026-06-15T18:31:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f8b00f21-32c6-460b-a918-68349d9d19b3.json and https://artists.proofprofile.net/proofs/artist/f8b00f21-32c6-460b-a918-68349d9d19b3.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 0x21800e5c26ec901ce89b27f17bdab562b3e1d5effb0590bd3fe3edfd3917b6c5. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:01:27Z), 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/TCJPX2366548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf4b828ef11deb6bf0ace21d8a81e540e7a0efa0b0f96343bfc1b3336559c180. 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/TCJPX2366549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc376c8508fc259457db5e5f880c2d3d35822bfd1ef2fdca4f900383def532405. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/TCJPX2366550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7039d5697d9ecbb7dd2ec3e2fbb2ad4bfa7f13b28c18fdc9e40ed901008ec765. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/TCJPX2366551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18ba1b351820ea9029148d0cb6e52bceba861a99580884db9e821daf83888310. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:18:34Z), 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/TCJPX2366552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee8eac458636976d78bdeec657a02f0ea59c21e4eefbce6aed96cbabc526d0fc. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:16:43Z), 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/TCJPY2329702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35b126762df133d8d81202357f9acc865558c25b020c15290f7d391724f3cc03. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/TCJPY2491178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe132cce7c385b104f2614c637b95d73b946e166d38eb657cefe97ebdb7e86509. 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/TCJPA2465673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1964be91ebd8aadbeabe65e803914fcaed9b955f52e08ce626bcc8db60b072ce. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/TCJPA2465674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x102d5b06c36ade10df8dcdfd26e0574934187f1be774acc063e50c30a52e4357. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/TCJPA2465676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ea1ed7e6e42306f5aaf60ed44645874df53ca7e4657b9371dcf45d5f4799458. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:03:58Z), 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/TCJPB2424957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae59cc54077a7c83426c79e4c404b2e8792e20e2e269e5d1c9a910b8e6bf2b9d. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCJPC2437832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27fc80aeae69d477fdced3c9c15c8fcb1a8ac2eaa02001ff39f82127f414165f. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCJPE2565771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d117078d37aec92f03a4bc933f846909d6b9ccd5ac4e7de5430160c7ec5d3ad. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/TCJPE2565772.
ラウドネスノーマライゼーション
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd09f1364d3b584888b12aeb06aaf757a1894bd9de7c8997a24528b3794dea4d4. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/TCJPE2565776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b8efa8601af1b1203d5720bf644379b48947aecac1213ee284525bf7f79bfe4. 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/TCJPE2566332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x837378786ad9f1abc3fde680515c72b2e963a043ffa9a6dcb1bd8ca2b2a4be18. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/TCJPE2566337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ea1ed7e6e42306f5aaf60ed44645874df53ca7e4657b9371dcf45d5f4799458. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/TCJPB2424957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9adb47348d190ce711e1ae41193410db6b2f856b7f4621a20560dce135703372. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/TCJPE2566350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ff2fb3fa941d4da39863799bd88074d0fa932b595b3988d4778da61329c0dd6. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/TCJPE2566406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3ea4c05236146fffb267d975d08e116f96966fc80cee2dad2bb049642cfda52. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:10:29Z), 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/TCJPE2566413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d29d80f42c4cc6f1657884fa5e6bbcf829d598e644fa4d66271457641765b4f. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:19:43Z), 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/TCJPE2566531.