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 0x841e551120bd2a98a8dba0cedbc60eb3fa2e0eae22b98cc807d3c27d6833f192. Chain 2 (Bitcoin): anchored in block 953713 (2026-06-15T00:33:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8328760a-1253-44a4-8cc1-2b6bf79b504d.json and https://artists.proofprofile.net/proofs/artist/8328760a-1253-44a4-8cc1-2b6bf79b504d.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 0x877ca6d0a0a8fcca0cc672ad7d2f6b7a9bdc99ed650e202eb7a8fe5fd32c69b6. 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/DEPI82432730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6794ebed9fe1960bde69dbc82d1737f136f741054ad8961554d028d83abfe50. 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/DEPI82411884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92281e3f8f0bf18c7b4111feeb1bbbd827abbcb41d8ae9fd5d8ab70757427ebc. 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/DEPI82326709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fa711c890ab6e353d92fae786d99d049c3823c827da5d1df631bd01acde11a3. 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/DEPI82324002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9019c03e751e97abe617db44f1c00029a1deb5ab54e047b68defb48b8165d023. 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/DEPI82326485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cdafc175e2e9a736da3f5625bdae9671ebb2025575d4d94ba4214fa36f978ac. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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/DEPI82326484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54bfc6e1ea1c44d72cf42c19c6252f80da10dbeac1f8cd19a482f8e8d7fd3e72. 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/DEPI82326480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a4ae6d9cd044e3338345ce789649797a7c010a1744a48b018381e89c637e815. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/DEPI82326481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56b99fa82bad60e5a0f881d055195a0fb1b34d6acff78ee6b53f2c73a140c63b. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/DEPI82326469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x093ac5ef2ae180b63791a47a8960051f388d7329070a9ae44831a9bbed018a70. Chain 2 (Bitcoin): anchored in block 960305 (2026-07-30T20:14:59Z), 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/DEPI82326468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0af74002f86f597be30e2b3dfc4e402fcff4a80ed0e3eb25d348d93a428c0f61. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/GX3Q92030880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e10fd223bf36ae81fffded3314fc1c1428fc8684dee76cc94987bb1b9d04ddc. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/GBSMU9715680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x516bc0f9d0af94f7e500b4e3f7da70bb0e0fe57a76c0cd1f4fab0ecd941c7433. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/GBSMU9263013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73ea9756fb096b2a599e24a1f4121c56f111305237546bdc9c1f39a1a7887b4b. Chain 2 (Bitcoin): anchored in block 960241 (2026-07-30T09:58:01Z), 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/GBSMU9183597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18c8e2cebab7a9c8fe5125b92c431257b1b5ddaac1980fd23723d39bc6e4260e. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/DEPI82405766.
Such A Gang (Without Borders Vol.2) (feat. Advin, Ali Sazesh, Bbak Makaveli, Dania Neko, Enesaad, Fame Faiella, Hava, Jack The Smoker, Niki DaBart & Nikita Sonikki )