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 0x07acb3a9f14c495d8d97250e129691c848ccfcfadc8429fa74050fcca08ebe68. 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/ccbe7bc4-a966-4fab-bd59-0513f2e24229.json and https://artists.proofprofile.net/proofs/artist/ccbe7bc4-a966-4fab-bd59-0513f2e24229.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 0x3f42cafe74712fcd4ee8db4b91ca5522eded9ee9e78aefd1deff93bd8487ca3a. 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/QZKWA2028487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c109c23a6f81d62e284fd5d54703df15d70b214d45e1a78ca0f360c56bad4b2. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/QZKWA2028485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddc154740c47d1e207e26d36781cb10cb2a4b5478ca46c8bff736b489928b330. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T21:49:31Z), 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/QZKWA2028490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x139a187058870a98049b0762852503dc2aba1d265355be9ceba3ec0fc4e1a8c7. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:32:36Z), 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/QZKWA2031283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x083e5b1efee4bdb67d1c18ed0122f15aea10c8a67c90eb772cf95514111eb5f6. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:43:14Z), 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/QZKWA2036047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe29dcc7788d86f8a93046dd71e8216fa74f865e36df709a728b5f2a506c5a241. 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/QZKWA2039197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd99f77b104ea454dd19d0128e856dd54ffd208e7bd2847eb26e2d4f83f8153b4. 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/QZFZ32356207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb22c309d9a2de2a6fd5d24687195c0e13ea6608aad6b995bded0be12c2538ba3. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/QZMER2360673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdcbf9ed907477b2f0df0bc5f3aa6906c1d0c7c8ea947fbb69c3c8d60e44df01. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZK6N2304174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b1f604c55c34ee396228336e67ff6f4e1f9490ca5a98a512956b5d80158f88a. 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/QZPLR2347061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37169fa32dd295173b994684c741100ed79f26cdffde1e402eada73806cc4ae3. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:09:37Z), 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/QZTAT2383753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0e16f50b89e6b128bf95435f5e265402b5c84c6ba6806a311ab4d48df36d904. 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/QZTAT2384119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe506f31e65a105ecfe2d47234d349497e804e1383ebe57858b0bfa3155e7dc21. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:18:15Z), 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/QZTBB2333655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x670e2139a130e3bacf877c2f2e361c50fa9a62a09de0e46275c54a32f02841ba. 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/QZTBD2397122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17f2b9e0f2c55230015c2f0ca684e1e21190b6bdd3a72342cc9e2aff582f18f2. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:56:18Z), 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/QZES72498389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdf958485b3105fef0ba875b0be773923e429f61206c4884981f55459950c822. 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/QZES82408056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bbdc94660eb6029d4ad0bd0fbd2649cdfb8818a9d83f95f9e3336e0dbfe3a49. 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/QZK6M2469606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0ea3f4c640ec440a02e2354788a2d1c68e164dac4c061d9bb05d95ab9e0f3cb. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T16:00:02Z), 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/QZK6J2415801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ac1248101de350a8786bac8a0f5b8c167d0d7601c754700d7f5d148a3e3f076. 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/QZNWR2444200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe896e04301a48096c413032be394249e9e2fb51e85e319107d1b732e37267f7. 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/QZPLR2432324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e28b5318712b59ed62e90e73e92c5490b4912a5ce446c5ef975615a7b6ddc24. 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/QZHNB2487900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5024bd9ab37c1b4b7e2801a1a203ba83908ed0c0c7ed5ff1355a2aa16b276e01. 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/QZK6M2439374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0ea3f4c640ec440a02e2354788a2d1c68e164dac4c061d9bb05d95ab9e0f3cb. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:01:49Z), 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/QZK6J2415801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f47602f6d9af665b8b88d3b2a38f8e5909a15cccf8608693b71cec7882ecfac. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZNWR2497287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc919a97af260f78eb2ab300991aa5ab1d61418ed7659099b51b9d4c989323f76. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZWFK2444387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d7ab8df09e156adb8b7490e498e085c627fbd09b544e2907816574e81604f2f. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZWFK2443887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1a611403b2ed635dacd3345428d9d0ea463de876a12aafdb792a1459313aba0. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/QZWFL2446070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8860215bd7110b19517a9542aba63fe1c6283edaade9d49abf4e92c844834d52. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T02:58:44Z), 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/QZZ7K2465928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07d29c6d8e4ee54d57f0d260b2adf1b2f184635d63c042b336d3089946617883. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZWFX2486517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16f77f135d6544a811c4c2b317d6508b8a8b30edea6b6711727182613f1ee161. 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/QT3EZ2406866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x443acade89cfae62e736460bbeca4e4858949860a79f6d4aa14fac05ba15c7b3. 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/QZFZ32551088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98f5b1ba9df672dcdb60849945bb813fc0e366986e1d867cceda6ac87240b3fc. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:36:47Z), 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/QZDA62572950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60be7de197ec1e8f0138024e7576f7835e0473cae6a7c6b4f33942df0279d2ac. 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/QZES72571145.