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 0xc1b488da25354a88776410975c20c5b4548d2540d0244412ab00aef9f5b15b30. 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/742cf22b-a70a-496a-a912-794234719d4d.json and https://artists.proofprofile.net/proofs/artist/742cf22b-a70a-496a-a912-794234719d4d.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 0x99713fc2d748e7d645c5dcadf135ed802d550a3daafff111cfd5f59c70292c90. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/USDNB9454405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc04a0c658d0c88c2fc6065eafa9d528269fa2e2259dcd6aa27a17951b3e0bc0. 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/USDNB9654801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd994bd0df7697be89571df913a5c1123330c4a76ed3f06d5cdddeac708973f5f. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USDNB9654804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cc37b0c8e8735e6df00478d0437b8886addb11f236d66d6ccae3844f4fadc1b. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/USDNB9753202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x971887bc6ad52eca31b93302ea91b396ebdb0c8213e56db92d04e5607bdcd49f. 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/USDNB9753203.
The Ultimate Collection Vol.1 - Street Jams
The Ultimate Collection Vol. 2 - Love Jams
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x190bde7328b8a1744c91081944abf1fd5ec8d8c3250bdb8ca4bf69dcd584d64f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USDNB0548101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b1974b3bd12c1bf93a480a400004a4b34e35cb57b17a4eb0e6c4c577dfc4846. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/USDNB0666502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c73a8679be9d4157008b756d7c49e3b2cbea1ba0915248a4c639ccff618bf51. 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/USDNB0666505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f210a697245663c7c4c0b35850e60d393bb56639b5d4ce51c138af4da33c822. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T16:58:47Z), 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/USDNB0666506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4529d85af09d36b450f433eba4af9493939f913eedf4d1a81be6b58fa109267f. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/USDNB0853302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a2f56d0f9d60e44ed17220a2f2cf487c3dd4b8cc16e8c3551d5c128b226f392. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/USDNB0853307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa93e1cc700b0e4f6980a00a0de40e00a9c169da199e380f1b22bb8abfc5ef30c. 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/USDY42538144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7041f71c1c6aac9e44aa3291de51e5bed9a63aceedc926c17cc5b1a327e156d7. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/USDY42430690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc68082772bcfe6ff8afb1e7dab151c649eb990d2ffecb524a1973e8799a465fd. 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/USDNB0853002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84e8ee151f4959d0446b577f86df415ddd7ee447ce81b9ba36b7b39f11fdd786. 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/USDNB0853003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7284dfd733bfa02539232a2d4bb0a184f551af6da9eab49f88e12358a3b6ff57. 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/USDNB0853004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7805c128d3ae8abbda80117ded4cf429c8da5286c47bccc1e1755eaaa16639d6. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/USDNB0853013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x295deca7786eb6e61c8c6668b570a6e5ce00b56eb49c699c925ca96dbfd285e7. 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/USDNB0853014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1de1513d27dac77dbbe80fe5f460bb670a3f52fe259d3e147c7554eb2532453c. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/USDNB0853015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4651a53caa2cba546ec7276d849d0827f37866dab2e0501ab06eeb44c138c0dd. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/USDNB9954512.