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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d4c53fe91bcb9abcc443bf9fb7594b2cfb54935a73d62f0520c160a84614ad3. 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/30d55656-0763-4bd3-9461-8547c2f3889f.json and https://artists.proofprofile.net/proofs/artist/30d55656-0763-4bd3-9461-8547c2f3889f.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf6c9383187e56ca86702c917697503cd663b07c963751819396a98ef15cc7fd. 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/GBBFT0200057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7ec97931c4ab530bcd8581625e86d3d122a726be8b847c8e34b086e77d41bbc. 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/GBBFT0200058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42c82549c73af428ca29adb87d21a110f8fa1391635b57d67a11cc89f0982a4b. 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/GBBFT0200059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf22559bd898bffd925117657cb98367289f37abebf5711df05ce1a0abb7b2f09. 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/GBBFT0200060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46a9f51667bda642fa6af5390a8d47202a4d313ff592eb85b45f39acb248f9c2. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/GBBFT0200061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x706b1fa079553416075d44e4b7757f3731f58036dfe40635b762d080dd1fa646. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBBFT0200062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadbf06854fd6de8213c31f618a6a3e1f07abdd63fc46141f39099017060c715a. 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/GBBFT0200063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13f94b68caaa1ad8250ee6f3a69c0fd740560c0209cbddebd63f0c243a70eb43. 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/GBBFT0200064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x477e7eeec17a3db89f23086a5e81c7cef3b89a52fa245f4dab8cb2ec4e7bdca1. 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/GBBFT0200065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0c4cd40e2e2ad2c386dc4a1fc40a3d40da2cf58c532f8ac61d92909c8810575. 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/GBBFT0200066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7297571844d5ebe1b3a4ed34ae9d28bbab50305d7af0761b9f504f5111ba8e7d. 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/GBBFT0200067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3772df36e0b34c230478e8970099f4f885ed20e601dc5c8444530d69531fb1bb. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/GBBFT0200068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b2ee3dd1ee33688b1ae7cb78626817e4131386667c6643755c0b1c0f16c1a0f. 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/US6R21416253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x706b1fa079553416075d44e4b7757f3731f58036dfe40635b762d080dd1fa646. 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/GBBFT0200062.
Latin Dancing Rhythms (Salsa, Merengue, Bachata, Reggaeton)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x706b1fa079553416075d44e4b7757f3731f58036dfe40635b762d080dd1fa646. 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/GBBFT0200062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3772df36e0b34c230478e8970099f4f885ed20e601dc5c8444530d69531fb1bb. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/GBBFT0200068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x477e7eeec17a3db89f23086a5e81c7cef3b89a52fa245f4dab8cb2ec4e7bdca1. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/GBBFT0200065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0c4cd40e2e2ad2c386dc4a1fc40a3d40da2cf58c532f8ac61d92909c8810575. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GBBFT0200066.