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 0x775d49864c8d171557f4b60d45ef1fb082e888f982a4a74136f42bbfa55919c9. 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/7f412bf7-8ba6-479d-abe6-395088f0bd3f.json and https://artists.proofprofile.net/proofs/artist/7f412bf7-8ba6-479d-abe6-395088f0bd3f.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 0x6bd41b8e5bb8d6887c9d1d9c9899138e60e3fea431d07ed3964ee84b78190d0a. 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/PYC192100016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d29ec99ee4afd42601a08562aeae9e9607d1d22c7dccb9498ca41fa41abc2b7. 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/PYC192100040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeff6fcb76bf225de936153aadd2eafbef31501bcfd7643cf2222971509d10ab. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/PYC192100043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eb51b60c3c41389c9641a6bcb8ef28459bbb8881cb172a4f1ec4a11e0b50914. 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/PYB461800031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8990df30aeb950ae386cb9903061d0608b4a9b8fb8cebed2440b6f168eef50de. 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/PYB461800038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x023f82ecdffc47d6141d0b795ba41e2ecdbc1ad3d1e810672b02e7daa2b8a4d1. Chain 2 (Bitcoin): anchored in block 957625 (2026-07-11T23:15:09Z), 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/PYB461800033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf53eae4fcfd2f51659ca3dc39772a794f7b7912f21438e8278a963155d2c0e00. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/PYB461800044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7d89f113855a092325fa7917ae315ee7042229938b293de079ae0fd9b1e91f6. 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/PYB461800052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89de3aa13452b1963f6dabfc671af7a355587bc9bb41dd259d908dfe40b315ff. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/PYB461800045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab157b6f0fcda4fde3ece952ef993e88efc59335c81488a25df711a226d4916e. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/PYB461800056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73d3eaf64a73bf12a00515142332a668af3e26c78fcc28c3c008476c5219cef0. 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/PYB461800047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd467565fd7ee7e797ce2df2e3307cc6a5290a3272e0498ec63ba09553d8a4b18. 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/PYB461800067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe73485bea8e7ff60c75cfe524a042ebbe03704bb6d006ece421d6d0dd439f85e. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/PYB461800069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2465aa84b85c165f40c61fdecd8c4f57d2b1c7d828cc8cbbef0e5ced3f29f9a. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/PYB461800061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c402f820173b691794650abdad3423ac3df8aa48d74aff6626179ecd0eab182. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:32:40Z), 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/PYB461800062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e99dc33fbfc8304e63e551e167f515e60f049c418759880fd7808b5d30150f9. 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/PYB461800065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fdd24d81aeb79bc96835e8bbce6cb8c12250040f4245b5f8d8dab4692dbf64b. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:09:54Z), 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/PYB461800066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4e06c7d21dedaed0ef74cb3bfa0ae7bff73c83564e43b178097e5935215f8dd. 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/PYB461800057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe9f1a6fca8e8c535b00b35dc446e164fa1d4c529533ff8f92ec57f3e49017bf. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/PYB461800068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f20220c35017a6821f67653c7c3304ee17b62ccaa58ab0fa040ba72d31283ef. Chain 2 (Bitcoin): anchored in block 958691 (2026-07-19T07:19:31Z), 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/PYB461800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e17b85b31c59fa5f0a50e3accee5ca0cac39d01b36b2340360adfe5f9d2e9b9. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:22:08Z), 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/PYB461800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec07956ceaa4726b227def4350e68bbffcff9528356b4d508e87a81f1d1e8f4e. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/PYB461800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1bc3226dcc7c7f038d785b4bf75137a4dbeea3d801cf4af9885bd484abe7ad5. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/PYB461800008.