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 0xf854a43a5eab99d6dd74d3a4e7dbe8330b4d709635bfd6b55c68870e4b80a7b2. 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/e321faf6-a035-4381-a4d4-8e9ca16cd41d.json and https://artists.proofprofile.net/proofs/artist/e321faf6-a035-4381-a4d4-8e9ca16cd41d.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 0xc1db5107c860e2d880e43e00c6e8f87b7d2bf6607c59ca9533b9621de2cc0d4c. 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/DGA062292780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7de7b327974ca87b79d6a57f975916932ea1609b8ebca3433a70143983e9d5c. 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/INM431700242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x694fa4b5399a143fdedb65ab3182912c09750a7de759db1f00b35ca1b0eacf19. 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/INM431600714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x425a4a6e1c449ccf95dce7ae91a8e006b6d75c6751a6589e81a50896c2e18a4c. 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/INM431400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b7e81b3fd4384a2ba38fd093bc8e14c8024c05b3f368b9ce1438e1e6b3ea537. 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/USA2P2474183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51b2bb23068620a53247230a016e26b27fc7633bd08a247e2101f73077863722. 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/USA2P2465886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc11d5f37353425bb673e78f83724d1b67a4e3911269d153c5a9d912599dd58bd. 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/USA2P2455799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c4ef1411fff059d6f07ada15c2bda1629e1a9bf354c45b2c3716d0d7a120621. 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/INM432400116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe12c2a1496bb3363a7e7317e3df51a818e6441c7d929ffd85179ad04e469bc58. 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/USA2P2359826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc98262388fd85e24aba2e87110c6e9c35d138c2b94054009b1bb26e51ab24c95. 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/USA2P2351421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c8184790d4b186cdcca5f74cfd0e35b7101925bcf5fd23c3a18e521706eafa3. 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/DGA072314555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x109d0e49fff6e3965ce4c2cb2b62724ed17ee1725a21230a8fa15ada83deec9f. 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/INS182203203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8358debeca981059becd405cf40d0217845caa04908ada00a98d6304bfd87bbf. 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/INS182301502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bba3d1988bd7c07a637786ea9171de7c6fed5a2ff07af184db2486528ae8d2f. 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/INS182203473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c29a0a38ab48436a5312cc421693bb58a485fa34fe061b263319250bc5bbcb9. 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/INSD11913184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb5e26413392fa141c43df93bf234158ee021fd6c84f6ecda013d2de96d4d045. 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/INS182200691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00804ca8676c045b675db52b6a12a1a5711a43073e840c8ccd39805afebb4f8a. 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/INSD11900832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b3d74cb03aee389d5ec61841809c7ce686f82387ba56a65d4232695b801fa2d. 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/INSD11900570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9abead9755f1e3ecfb913fb710b0e0a7204ce04c20f1447129a62699d560b298. 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/GBMA22047051.
Best Of Kaur B - The Ultimate Collection
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6875f5fb85dd01087f2bf823d163e914f21cfd5a301d1d3b7a550e17fb9e3c01. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/INS182300356.