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 0x847a2ee3d9023f5eeb841b5577a266ac727f0408bf927979082c31b213be105e. 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/e175b5e0-1099-4091-9c2f-8697bd41903f.json and https://artists.proofprofile.net/proofs/artist/e175b5e0-1099-4091-9c2f-8697bd41903f.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 0x597d86a59c22da830f967b26f6f164e8e5baae0132312a9fdae89dfdd6253230. 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/QZK6K2478257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d824ec1893c4ccc81c55d1e180d6e3d7456316439ecf0ecb3ad2e348e44de6e. 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/QZWDE2366111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe7bd9c1c3b0a0ec25564280279a75166199868f47c948d425a50edf6d0c4d58. 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/QZKDK2051185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30e78906ee54eaddd0edadd3ada778ae175993d8234b486f88a7d04d299fd712. 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/CA5KR2438737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdd8af49349b806685d306106546238dcf7776c5f022fb4c80baa6d58184c68b. 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/CA5KR2438739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39943d7a898ee2e1fe0723f41acfc81169c4ce5ab1cd909371659f348088199d. 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/CA5KR2438741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd2cb5ba03892c4479bd45bf8eabce6e2ea1c8493d9fa056f870b872e8e58af4. 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/CA5KR2438746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e3e29311531f1d04dc63c7737fec4b3030f4486a0f9d20a9a54d70ae27a27e9. 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/CA5KR2438749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce60461037f26ea1a098402435441689424be1e803ecdedeefc856cf96eb89af. 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/QZMHN2059889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0eef704ab80c1b9bb208d135e2fb263220b17a9decff5262713877ac22db321. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZMHM2057235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x439b28aa7fcdab768c6e3eb84674db74b784e0a4c42c103459f0eabe9bc477c7. 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/QZS642395195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38a1b56968bf6707582e6e23eb5be9b941080adfa53f89c44372e786f7070eac. 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/QM42K2397746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45afd68ea1351099065f4f6ca4374076901c27aff36bc030ef28e690b860083c. 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/QM42K2384507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7222bf8a9ac088e70ceec953c42ec902c6392a3e553b22ecc4c5dc903618584b. 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/QZS632345486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfd5df6fc939acd825461c0e453c0bfe0a1fe6820d4a4bdc010d464458e9f1a4. 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/QM42K2363362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82cddbab0c1cdb8c7e8a515bb4c9efb7d03552d650645de0fec94d9bfd3daed9. 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/QZMHM2367690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5b5ef77329e44f7b74374bbe734adad1f022b8e75f4111c7853017a874879e4. 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/QZS632377606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77c14de20e87df51bbc4a5e4be14d6a037ff7614c90a13621473b88910f719d7. 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/QZMHP2397154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc86e698ba5ed4da409a8fe4adcedc21eeae29304c03d6537ea52eedc0e2b5a22. 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/QZMHP2374199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47fbfe5503aef744c4c18434a8d63192029a7aca7d2016dce1bf215f57aaa896. 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/QZMHM2326268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6bf54d302874a4ccdbb49d9b56dd21ee0cfbc7ffbfb36b5f2df2cb1e97bff55. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/CA5KR1819043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1b06c2e16c15184ac968c0a58530a9c978a42fbf87a3c0e90ecd5e311573d16. 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/QZNWQ2077319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdc99e04867a597588950509a8f1ee772117e853476bd3427fdfad8b028e0c3f. 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/QZNWQ2077325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7819054ed84ee21d36884e9039416a5d10bb48b5d0b9746d39fadffe782dee5. 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/QZNWQ2077326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00796ce63c1572e6179c47ed93c83470752285e8dfe2e2bd76d95a41de5d08bc. 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/QZNWQ2077328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3532faa6d36b000b1dd8243e66e53b14fde174f2096a28870f4d45ad4911e827. 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/QZMHM2073471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51274e37a1a008680982e0c847bab4f5612bcb938a32a64656b86f1795702d76. 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/QZNWZ2518140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfc038a7ad0fa0024342144514fda561132bab33eee8cb4457b01fd115b38abd. 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/QZNWZ2518141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34615865ff33bbba56599e97a585532649f9ccbe9e6f6d87d77ec5bdfd9519b2. 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/QZTAW2506868.