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 0x95cd9ecbe5715c3e58214c7acd5213fac6a9aa09a138062ea586c600982ac62c. 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/5180f8aa-eb65-431c-a7e3-7f73d87f02fa.json and https://artists.proofprofile.net/proofs/artist/5180f8aa-eb65-431c-a7e3-7f73d87f02fa.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 0x6546d5fb9575283da6cd2eba0b3a35bc3716823c0eabff5444dfa0a9b0f01e34. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/PLF242210668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6546d5fb9575283da6cd2eba0b3a35bc3716823c0eabff5444dfa0a9b0f01e34. 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/PLF242210668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aebee1f14900679fdd45aa10cb4ad68c37fe9cfc184c975eb429f68cea56b80. 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/PLF242210669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06ad09eaf36072c5e2073bb456861aaea40227dc27b644c2bb42ef1ffb536bbc. 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/PLF242210670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf49bcb1dc80f92d41239ff99341a5516f0268820ebfd83953368775d74f95d6. 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/PLF242210638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd85ce9e4c672f4919baa836fccf7d75f30feba1c820fdc03304f43161c460ee9. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/PLF242210671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27575ac83e12c0425e6dab1e078f0018d06915b12f9b9cf49cf9ea184205a8a7. 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/PLF242210672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x854dbd872a6b585f1ea589dd647ce1bf664732070fa7996ccbeda83a6c1103f0. 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/PLF242210673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5f04e1daaf800f629b4ef68439317e4489c1284972d214409aa0ff265f55c51. 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/PLF242210591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01e41691fab7395f07f49f7bbe1b7c483b0a5d13e143372f322255be5512c89f. 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/PLF242210674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x970420626fa5f8a65d61d7e9a618e73478e2909f32ebbb9e7e611288954b179e. 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/PLF242210675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bed0d67b7c4c36b3fb48f54de030231617259d75776b88af32130d3a9486ed3. 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/PLF242210499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8869e63cd48ca819eb27f85b37ecbc1a73b3f53df00129f2fd9b6f57bd0a4c4a. 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/PLF242210677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x485566677ae342d0780d45ed9758fb8e7b7d57e5b25be9263ef5caa3a27d54bb. 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/PLF242210678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd7662b6bccb271046fe0a4c78b2a659369b1aa18f9839be93929817f8d3a041. 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/PLF242210623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2ec905b41b702346ebca035dec4a768b6e0a91d51e67efa5f457ad6548ba761. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/PLF242210679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x042d2f82a3da4963320dbce0eff16d5999ef8d71edc6169a8c4bb37143818dc4. 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/PLF242210680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b9daa60b6e9a745aeef987a558c48b7d784587f65f51029a5bc6f9b9d1f3bbe. 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/PLF242413484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae567b394553240a24055ae0fff552725ad73b4fc08f9e6528f7db4647a272ef. 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/PLF242211273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76fb3f6ab56b5baf332683cab0f75d21c5b8749c0d1baeea309f2aba74efe04b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/PLF242210936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8effbaaa7417e1b7f6a06f8edaa3be639843f89912714fd30dd1087043aa36ff. 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/PLF242210682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedef07d6754300f7d742ab2b0f597a62c2ef7fa84dab77e332daae9890bcfb2c. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/PLF242211062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76fb3f6ab56b5baf332683cab0f75d21c5b8749c0d1baeea309f2aba74efe04b. 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/PLF242210936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x730786a6c28f1b175f3615038a498648ad8b1d56cd5de3b779fae966736e9642. 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/PLF242209502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9c6403cd1b19474e935b194e084a442dc4b938966ee416558d80720a7b79721. 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/PLF242209888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3ffb976a4a6f092bf592ac47774acfbfec20a183a3b5a7a4ca00af99fdfa980. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/PLF242210942.