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 0x5b024fc318ee2595d6e8f0c0d206cbd45b919090bf2d61bfeffdf5e800b712ee. 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/46c2ff3f-0033-4134-b0e1-bd00944956c7.json and https://artists.proofprofile.net/proofs/artist/46c2ff3f-0033-4134-b0e1-bd00944956c7.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 0xfcd8df839cee13e36f7e543d3f8757c46cf2ddc416fca80623fc2185986b18f6. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USHM81297411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a65be06fabdfc092b2437aa58fd911eb05aedb68fd7643cf5dad553ec64c0ad. 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/USL4Q0892488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x181c7bf0f5e020bdaf4666d677d29ec09d22b0bf2301b1eceb5097b02705ed13. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T03:52:09Z), 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/USHM21247280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a9e3015e01555e82da5791f8f0521a115cb87c3c30410ae06a321baeffb359c. 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/USHM81303931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e707f0e8f26cbabc6cc011c8fec9fb9866905fcf49ee8b6cab2056bef123fc8. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USHM91400420.
Sunlight of Oneness and Very Amazing Now
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff346564783b50668f3abe21bd7ac50872e0c30f926723c725c489b694e6ffe0. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/QZFFG2000201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86901d81821cacf661f6207d4780be04e007d38a75a63b877cfda39867756de4. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QZFFG2000203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42bf4e3ddd74695e942685539867e2889d50b827876669887ddc57d562c5e002. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZFFG2000205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01351e08a1519e0cb7b372df5eb2ddaf6765209ae51240554d4233c3795336d8. 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/USHM22035729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49664eaeb44c87f581e4096b0a60cb8e24856b5eb2f2254eade130ff380b7cb1. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/USX9P2050867.
United Soundscapes Oriented to Nature [USON03]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9828348a6f7b4801c8342637c81240da59a00fc29f1dd0ceaa9ecd555109fa8. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/USSP52591005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6199b195134cc722ea445373e0488e4a17a5ca3e35bcad4a134f4ece5bc0bcc. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZRQ22500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5480fa325d773d700c764d5708d46dced232958a39574b84bc6fdafc5008de1b. 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/QZRQ22500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc67d0acf9884b268a4df2ad3973936b32c03b1b9177e81b1e533c85000903f9. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/QZRQ22500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b7e20d560eb185b12256dc126cdc27765e70fa1b5c8199e862176ad13b7388e. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/QZRQ22500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb2e737b6cb090d7fae7fbc1b28777a703f885fb60cdd1abca6cdeb788ec5a14. 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/USCGH1461395.