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 0x376bd65ebeb4147180ecfb73470c1f449ea89de8d0de35246e60a6d255890c03. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ae322cc2-cb04-42aa-a3f6-7f77bf1e2ae7.json and https://artists.proofprofile.net/proofs/artist/ae322cc2-cb04-42aa-a3f6-7f77bf1e2ae7.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 0x00f3dd6dd2deaa40733ebb052d6e47f7770b24243ab0d3d07bb2d5e477c28673. 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/QZGLS2382666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe8491894004a735bb51c23186c782d78a4d6bb5ea52a60c297105793596efae. 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/QZMZ92394188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0b0f7e93395517299b70680b360193cf2c04c5b5eb4984a664d78d4440452ff. 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/QZNJZ2461738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd0b46d579d691d44f25596780117467a0508db8f3fd291fc8196cf92006b3a8. 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/QZNJZ2465990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69d6fd024d1489a9c3018b2aaa63cbcf1ae6a5bb551f4fc6d0139ce1d7ec9cc5. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/QZGLM2579108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e9e33d1717fb9da44dcd12f38f1cf061db7be379f09ce88c40e9553a3676c81. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZGLM2582186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c913789b7c8ee35b14539a045c8408f71c39cc275c26726f1e4dd530a5a8268. 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/QZGLM2582086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb143dd99291f693252b2496c6a3c718b4fea028471f883a911eed73c4e9d142. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/QZGLM2595090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c27b5440870e9138d89662aaf54fd991ce625adf8511bbb8b1d7090fca6f25f. 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/QZGLM2595091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55b37b4667ba75074b36edbbd0f7ce176d0b2dadb756972af07f930285e20577. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/QZGLM2595093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10c2d962fbe998acf2142398065de6e7d64f663f011c3eaf28e7361c36bfdc52. 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/QZGLS2548430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x267e6b736de1ea7754abf81ab9192560f16084c8804fc8b946d2382084105225. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZMZ92589859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90f03b0d222f509badfc0ad7214d38f0d9ae1fd699ee5cb0002a9c32cfe6647c. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/QZNJW2530284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42676078c1d17f0ff1b20b94c915e9ac335d37b80acf9cc0edbe716c09dcea77. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZNJY2521040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6159402a5ee440a6545417aa345837af963d8927a14aca32540031283337069f. 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/QZNJY2571946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03ba5f3556b47adf6a539d0ceef6ebd36dfde448b7dd6a3064eeda42ec56e275. 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/QZNJY2571839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x198a1ef966d265e4fd6d719238623cf67e5bc3d075aa7ad349b80dc399216ef6. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZTPX2517282.
halloWEED :( (Stridah, Zé Pequeña remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x749a4e3f6af9019bd28e61723f903703d38eba6e0ac6efc96cefcf7ead4f4bf8. 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/UYY112500021.