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 0x5c5f4a4749a03aff78830579e037851d2c16fd50f0e7b0cd10e491a5a8daa3bc. Chain 2 (Bitcoin): anchored in block 953741 (2026-06-15T04:44:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9a7ac200-c582-48b8-be17-67b522609bc3.json and https://artists.proofprofile.net/proofs/artist/9a7ac200-c582-48b8-be17-67b522609bc3.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 0xa136788fc772e9282dca8721de4460932654476900415b634ff3db55bf4ba602. 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/DELJ81923724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed96d63d66d4e17172f3ac9d10f7971e713ab99494db7bca5d0f8a0382e71937. 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/DELJ81923726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77e2717a38b66826d589ecc1cb0f3e77ee4858f7ddd2a1ed73ddf2882af38ead. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/DELJ81923723.
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 0x4d5fea8c1bc39a5e3bdf86d040382e494d092e1b9f2be03bcb9e4f4bc52ef045. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/DELJ81923725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ec8ed058cabb5568fa58a674d77a6fcc66bdc265c775565f4bb60db73393c75. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/DELJ81923727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8dd0a8c97bc04f7b2c4845c6da9a8b3bb40abcd8829330eaac66652108d87b4. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/DELJ81923728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x455a3c4f2f1a704d5a8a71f579eefc7c87e9b35eb2d3b6a64edc59feb1e839b2. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/DELJ81923729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4480ece1af2c4974a4a6e80b00b54ebc5ffa1db665aed8337b5397e71be5c00a. 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/DEZC62351590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fc5cbacb280da639bcfa0e9588a7ddc79c4dbaef3a08df8e390bf1fe7d95292. 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/DEZC62351591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa348fe99645819b58bc4aa7f8c630622342fc3e5d1f6ad6aa1bb89e7d71bae45. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/DEZC62351586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b428ec2d66c9fb3b1a9b05ff15715f83778a957fadcfb6a74f0e3b22e4e1d85. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/DEZC62351587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02022edf762c98cc6f34f7bb99a90e98767b16950c51e4e3707f3b2e31bb798a. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/DEZC62351588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7d28c6aab2601a585f71c03f5bd3feb49aaa984b62d2cddd1d591ccdb80a0db. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/DEZC62351589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42354c507e2af4d67aa222b2620031c1ee3e58be70f30ff2a353856cf2e72846. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/DEZC62351592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff6c45d0060d6233677cb9a0b986eda2660b19e820264a30b31e5faaac7e7eb5. 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/DEZC62210815.
I Want You Back/Thriller/Black Or White (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd4e39f587f8da756a2067a3f5c72f58353e288e77f2dab993986011787837e1. 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/DELJ81898393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa6ed8acfa2c876babaee0b4f23af382e0fd6616364576d5dca1ca53fc47c46e. 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/DELJ81898396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2ead85c90bacf7c8db56a39460009ab9a973cd4872425215456c492ca7f01bc. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/DELJ81898394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd63b63de2d8fe3083c65407c30baf3345ca355d85b8dd05144653c5fed63309. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/DELJ81898395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4536b5ec7cc8bec54d6c53e69aab830b49c485e5a94af6eb7e9d821a3e9a976f. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/DELJ81898397.