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 0x6420d93dec3ad7e9e309b49a408389074bad0847334645044bf8dcc8d358f1bc. 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/56c9f33b-c7e8-40f4-a481-6bf83edf7a9c.json and https://artists.proofprofile.net/proofs/artist/56c9f33b-c7e8-40f4-a481-6bf83edf7a9c.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 0x6a6032f41f98616b365625ebbf07c81ee276b25bf849546a46299f71f1b86b25. 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/QM24S2303523.
From The Private Collection of Saba and No ID
Every Painting Has a Price (feat. BJ The Chicago Kid and Eryn Allen Kane)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a9d7c23b51a2f7d2495318712f9894b1d1522bb3fb9b2109b39f55a0e9b4069. 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/QMFMF2450861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4807181166144b985b8c448563355f276519d36b107e91e7138c4881960ec3b4. 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/QMFMF2450862.
Crash (feat. Raphael Saadiq and Kelly Rowland)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x289867e8245f3ab7cd3e0686484d403d4c162809f20286d467e60f21607fab39. 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/QMFMF2450863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d00578d6f22900a865027841118d2e4d3b33113a54ca061735cb2b226437daa. 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/QMFMF2450864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bfb969d204c32ee00424e81aba582bd85ba9f956f112c49f604a2d2c044be9b. 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/QMFMF2450865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23df7db80567dd755113a101d4922d41171f4c5cac901bd471ae9a0f951b8013. 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/QMFMF2450866.
head.rap (ft. Madison McFerrin, Ogi, Jordan Ward)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6718b31d56e577d5d96b37bf98555d3108879c18a395252a687671d0f46b31d. 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/QM6MZ2472140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dafbde41d3f93aaf1672dbed914669352ea112dfdc80a729ce1303c8d394886. 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/QMFMF2450868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27f8e0df6b5bb20b9ccdf20b5b954c8be672843c675ce2206d9052864eb546be. 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/QMFMF2450869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5ebf9200713df4b0f9fa62db502674af878797beb4d9a01e281f5e3dcff45d6. 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/QMFMF2450870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e3cf66b4ce73bc7e1f3dd6ada4ced75a6eddb99c21e4aa67857407c27a823dd. 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/QMFMF2450871.
30secchop (feat. Joseph Chilliams and Jean Deaux)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2b66b2d7dbf0fce2dbf987eabcbc06787d8f9a97ca79e43f5992bf04b01f744. 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/QMFMF2450872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58e6a9953ce375f4198467f3bfaa98921f52ba60a52105ed7c6e9e8ae8821423. 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/QMDA62491858.
She Called It (feat. Frsh Waters and Tru)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x482670396e10ca72d2bdff7f4df59d96d66a7cd92bce51d1a1a4c0c569080c39. 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/QMFMF2450874.
a FEW songs (feat. Love Mansuy, Ogi, and Smino)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x395708e8aaf8087f9b5dd4e4f634907872ec49c0c3a18f43b39553f93083f715. 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/QMFMF2450875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5063d63ae0b7baf0b670b276fa5eddf00a3b0b104f7b144fd5044360def783a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QM24S2302361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3383c1b4d9d230c9c4bdec3e82be17fc0b63b7f987e00fc2d92b09acd8430e08. 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/USUM71702805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06765abc1664c54d96fa644e9f3a3a7a3ddbbd7602e18a1206e0ff9e37459ba5. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/QM9K31200299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8143214283835fabad65a48c7c351f64f0ca8b17e7a5d5bf438ac66fe3014a0. 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/US2R20400054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02ca758b4240bccf73b2ab10376544ddd10591b3735c5c2959f866873f46f5cb. 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/QZMR82200458.
Michael Jackson: The Complete Remix Suite
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fde7d7b38bb2f93335cad970277834f7a728940f38cf790b063a295170336a6. 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/USUM70987412.