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 0x694509a7bd9c197b4f707b59dbc2a3c9d858604b147361462e68000011450b13. 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/6f615158-1c97-45c9-94e2-625e69c7399f.json and https://artists.proofprofile.net/proofs/artist/6f615158-1c97-45c9-94e2-625e69c7399f.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 0x7d48d1e02fba004759a3d80c9fb3a4e6379a52fdc4387eceae3fd99e6e18ea8d. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/AUFE00900033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58591a9b35c14bf6d1cadc9618d3bbe26f9c07c592ce6912b83d8a07cb9b79b9. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/AUMU00100767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba335c586fcc46b19bc4c3742fab9f07772ca25554b400654428e1057520dfa4. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/AUWA02400441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x895294f9f42d3074e0d29d88ec20fb9961d760911319dd118a1db6fba8537c40. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/AUWA00900784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3be6fdb9a336b74c1af42cec56c1298239b9e73df21c7dfb0108eb6badabed17. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/AUWA00900783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b01aca34354486c626aa4a2cab5179ecac8d78749dd4ea1be5bce6355eee87a. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/AUWA00900785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7172711fdbc0ff166653fed2fd414e3714156b4f56300954703a7b4231f31da9. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/AUWA00900788.
Straight In A Gay Gay World [remastered]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e230446d0d70fc22387d2b20135a2b1f6ac622029aba62707f40b109454e563. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/AUWA00900792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fb540f7e95a4eb03d53fd2a1e7776692758a7c10af6c8990b720df115049a6b. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/AUWA00900793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88606cb0bb93e9684ecba9411165d76dd154aa360b523fa457c1385958f9fa2e. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/AUWA00900794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f77ae1755298cac4e272a366f8635937ac2e86557e38c3ff4ec19138432f35f. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/AUWA00900817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x356fc13a864bace6837161574d24379333c596981ac83693170d4b633e350714. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/AUWA00900819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x886bd13a9e83d8a1385583d9d6a7893407f34e561f2196897d0a95c064884424. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/AUWA00900812.
Ego (Is Not a Dirty Word) - Live in the 80s
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8a94bfd159b9d6ab423d909cb2504813b763979af5ae41477c8a7e56d4b6581. 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/AUFE00900045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x263224f6e30396dd20ab573c6ddaa61609a5574fc9c64e46912e4ca7e43ae565. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/AUFE00900060.
Don't You Believe What You've Seen Or You've Heard
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd28b4b3059e24f0d9eae31f3b862af7151a4bf6526d871e72cb9422413ab771. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/AUWA01500417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9679a25cfb2ff39e1ab8aa01fc923a103aeeee372984c930c881d9400e1772b. Chain 2 (Bitcoin): anchored in block 959355 (2026-07-24T03:24:16Z), 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/AUWA01500419.
Why Dontcha All Get Fucked - 2015 Remaster
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x636956e9b0ffc624e9368439595941c6587c4a61caf472aeeadb358663ad8cd4. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/AUWA01500422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x179498ee3ad4e71c0df8190cca30f716501de8bbb413af01b01824a9e4eb8353. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/AUMU00100803.