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 0x4c96cb85510ffaf8fe1d1d67e5c9ec033eea8a97c22858b866b0349dc342dbeb. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7229b9b3-45dd-4551-b156-ae80ecef214c.json and https://artists.proofprofile.net/proofs/artist/7229b9b3-45dd-4551-b156-ae80ecef214c.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 0x192c05c3abc6f4c511aeaa51f2aeab8e1eafa1e98db52be7ad2a66825e26a44b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QMANG2218495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5232615813210593d2a454e415cdf324b5d0ffd5ff816df62bde07a5126c200e. 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/QMANG2218497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x009b9f338544ed03f79f18bddf3debc22ebb4d15de6b8cb3137f46135c59f1c5. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QMANG2218500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89fc43654fc35c5a0d8c925fbb51bf31df443381a526f1c666b17ba3fbe42540. 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/QMANG2218501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a5b7e7b1da1b6ba8094d5db10a7b37a7ff3cf9e11dafdb62ced277da9e4cc74. 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/USANG2464565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x982b5ee3ba463000292d98bc09664971c148083b88938089a79299e8fbb2f574. 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/USANG2420064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x570527a18b3b8776f992f47eb640f1fd054c31f9cc086cf04863ae64160f0642. 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/USANG2420065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89ef93b8fddf53ad110201d680d738e4c0ac81b5a6cc6b0765055e5be032c6e5. 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/USANG2420036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89fc43654fc35c5a0d8c925fbb51bf31df443381a526f1c666b17ba3fbe42540. 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/QMANG2218501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5232615813210593d2a454e415cdf324b5d0ffd5ff816df62bde07a5126c200e. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QMANG2218497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeac2f56362f37ae5b9680967b3920098466c12c33899ecc8c2246f5f72e455c2. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QMANG2202637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89984f67bd950554da4c4713c18c335bd22b550f30b483f6a050bce9bbfa4147. 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/QM3DF2291434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9201b44a939a3599298818eea8c20b274ee6656d0dbe79cd8c5518a50f23e2ed. 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/QM3DF2202764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8f399266940f490b1fa3783d803037eaa1f13e23eb43ba0d40c535e9c99ed76. 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/QM3DF2225695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01ce41fd0a9dc673c6e0e7e7e29b308a2328be4c20ab9939f3be1acce604a09d. 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/QZVEM2323928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8158af67d2477bec25d3f5cd070f151d7000ee084b26f647435015781b89f632. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QM3DF2224759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1599299e93bf81e365b43f8e39c7daf970bfdd1f777e8e9fc6e81f5534c68bab. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QM3DF2202770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x190953d18ccfc6685a34ea24738c06e0c3a3a64993bf66c56d54eccf4790b77c. 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/QM3DF2203046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x967bf3a3728e51f9f96353a33951216fe0944bba55bae8be94ef590413950f53. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QM3DF2201083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf8c12d1ddadec01b25517eb381623baae430350c898ef117171ee6a960ccf40. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USANG2251289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12a717cd2b18c13c4e5fa521c3b1d4adf772b7025c64418417d859acc15b37cc. 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/USANG2285349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36d85b3b932ed931680eb413781aff1e3fab68bdfcbef32b48dba467c5347c33. 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/USANG2240326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb48760d44d54ab6b4feb7a3c7dddd9e40456273d2742876df4d910234c3e0711. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USANG2261654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb8ac26e3e8b8a02afd8bc665b2b32ee038054278428fc340759d307f7b146ab. 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/USANG2242644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x264b3cbe3ad6beec5d6446b2cda46a174c319dc85151c8181424e5bd4682e3e5. 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/USANG2219747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ce70a0c5425691bf26e5d59d0f025c6c36201a3c7f188f2f8eb7fcbf54c275b. 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/USANG2214285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35c5007013dbb1d7b3a83af74353f4aa75fe6f738373d0feee2aa8bbf469fa7e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US3DF2285124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27954ed4eb7a4d5f6eb8673d0c5616f3f779f1cdfb17c9c5ad4f9f5a8f0c6579. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USANG2201782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68ebbc038e08ecd8811aa1e7313b1e9fecfc7ff567851e6d44d540b4b8e02fa5. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USANG2203359.