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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58e997ce35a135a8dc428594d4a5cbee7bab15c485c2e291fa3b703ad3940e84. 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/9b5dac5a-6dec-49bb-9ede-0addc0d1ca68.json and https://artists.proofprofile.net/proofs/artist/9b5dac5a-6dec-49bb-9ede-0addc0d1ca68.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41d80681a66f31958a1ec69381ff05a3f9cbba393ad88da042a3a10bb5f66b72. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/PL86E1900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28865562aea6dd33d183fee410cb33050620e70f7877124e0b95aa09e644941d. 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/PL86E1900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa780bc4f2d35b6d369b203246403cd61b99d6aac94b23ac9467636d3699a7ae4. 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/PL86E1900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x588d4be663930c622c977cf70b9354851765f82e0f5819b3c153eb3f9a3719e5. 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/PL86E1900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b74a25c5e68af08d4c44e17d7aca15e04375096f563fd8c7384afd397dcf95d. 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/PL86E2000028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34dfc6ae81bc96d359f859455d4b240163b77050540a9242d83000e1904bb603. 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/PL86E1900005.
2k30 (prod. Hatti Vatti, cuty DJ Panda )
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27ca4bbac2c49a7578f7fbe94a34748d98282e2648e6f70d6f90a20ab03149bc. 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/PL86E1900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbaba6fbc6b71b2154fde9344d38c0b7e1b5bf262701cae8e7d70c5383626d2b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/PL86E1900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef7eaabd27bbe97c40dae28c00478fb848f2249cc6d18b60c9af5ab48c04e0a9. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/PL86E2000022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabe20029e341a8697001e9552eaa845530a6bd892e716fd8ebe50749a80b4abc. 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/PL86E1900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x427ce92fc7ffe7a6454683e04a70a5ca6fb240bd321d8cf823cb7feb8d0b2f4a. 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/PL86E1900010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbffe337af16bb163564c0144490ddf89aa5915dc57e427123de518b5ae54ccb. 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/PLG351600003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad1750dec6adfe78e1ad8610e82dd514648678864637d5d86809ec1666dd945d. 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/PL86E1900012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c47b72b8cfcf5c3fbb81fdc35cef3df7f43763709897d57311aefcc64a39962. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/PLG351800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6df865442cc9e6f3c2bd4c53c7f976f7ddd128f5366e5f2fb2f9ffaf4c58f4c5. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/PL86E2000029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4935b00f4c64c2f0b22c40878769e425460ee12ab2fa0cf4ebc8933520b1f706. 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/PL86E2000025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21b8dd59d5c2e98ee88166612036d50dd2b255dd1f0557a5b7672b2797f05122. 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/PL86E1900016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f83f9c10a034a96fa77c2c86dd3bfefa5e5ce81005b0681a47ff618f79b30a2. 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/PL25M2400085.