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 0xca75a4372f9f972812ab4d3d8fef9a78408c2d66e700052690f2b17da4214fff. 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/fdac510a-f40c-4367-8069-f0428ff2a629.json and https://artists.proofprofile.net/proofs/artist/fdac510a-f40c-4367-8069-f0428ff2a629.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 0xc534273b7671727f6e24d94f9bb4303e08c34cc275918f3dc73345a15fb8227a. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/US4M31507717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8946001232a7ee30d924a199e2a74a1eb042fa65b781a6552b235e36f26e5ca6. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/US4M31507719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0da7b78c70a4c8f1b7e31bc54d766a8259d6a0879ab93d610549bbd3df48a26b. 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/US4M31507721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x976ce02720a561829e8bd3c9919c8b16da9c0886182dd7a254305df177d01c9b. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/US4M31507724.
Que Reste-T-Il De Nos Amours? (I Wish You Love)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x574e0870f628330896f56a4d13cf7ed789f860e0d8c02493409c4b74dada794d. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/US4M31507726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe56ffcfc61ba70bc5612eb8dd1d29194f3c2960a2cc88b528f885b18eee99e89. 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/US4M31608290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaf7b9bf3c1111b84b7902e052c5dc61d0ee4feae22312bb77a2cdd06d129b6e. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QMEU31715632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8daee654dc08b8fbf056714605b65fc9dd9599edaa6de8020206990a6fe332fe. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QMEU31715633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a41877e16faf8e42c94e5b0a522fb5cb1e0a3b79c1c788599f6d3f7d647a792. 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/QMEU31715634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b8ac9b969b77a2b1fb28f56c7a1dd3a00d6b129742244932d961c0f2f39f1e5. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QMEU31715635.
The One I Love (Belongs to Somebody Else)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x940779ecfed169db7aec59c718135233356a2fbb0f5ca248e28a2319a9321850. 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/QMEU31715636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27113768ad164cbc4dd9f16bd434f398134e8b0328f6f9207304304155be953e. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/QMEU31715637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf18dffe676afda0a83ee1a5dec1509ded6324776197fc9d136714e70bc3b97b. 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/QMEU31715638.
Some Guys Have All the Luck (Bonus Track)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5e292f11bfc5ff75af1d4981af6e3ae62d94b1591b0278de33ba488b296983c. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:52:53Z), 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/QMEU31715643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8100e245f5562a8af94495829f4923af941511b30f573c1b9b0684a55f19a2ed. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:39:44Z), 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/QMEU31920346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a5b4ca919ecee22683efdd4cbc8126246932834ca1c99049e2c3af4bdd452c3. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QMEU31920350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc74fd43b8ecb833ac6ac2a971a562bb2c7d24e41e67053737c4f1926ba882697. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:40:01Z), 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/QMEU31920347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73f626638921b97e62c932f6c49df181f047e603e477a544a1697512a2d95dca. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/TCAGD2298075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ae32cbd9aac466b263e2a57889e152ddabf4a61df8032e87427429f9de24e2b. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/TCAGF2205617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb2b665cc1d10051dc01d68c346eab71dab5e548aa3be9c9bfea9963d23ce349. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZHNA2336624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54e8538ad4e0ad0d7c88a0c82fde2ec09fb64d49181b191856e1edbb0287aead. 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/QZFZ42438281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ca12b81df4bfb6eff779180833a2aaef3d5be8e147b023e5e0b0023e191f4e5. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T10:09:30Z), 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/QZK6J2400585.