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 0x411c73439aa661bbe80a5fdd68c54091ec2dbb942496ed2874e11336d2acb56a. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/aa448ec9-14ef-45f6-a98c-81097f2d245f.json and https://artists.proofprofile.net/proofs/artist/aa448ec9-14ef-45f6-a98c-81097f2d245f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Lotus Cloud & Cosmicosmo - Nimbus (feat. Benjamin Man)
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 0x8563c5fcc99a16dce47f3ae8c70a43c4793b7bcf2c3ab32ce59b67a99a7c42ca. 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/USLZJ1704827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1af29b2df3b7f350c7aaaa64f1f05f2981b2412efe4f76eb8bc5b4b8e4c8e11. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USLZJ1723806.
Waiting There, In That Summer (feat. Brandon Mercer)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf91bae74aade332d1738375336ffd2e765f3e2bef15c39c0cba4866c59fcaed. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/USLZJ1723826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd664b6c3b0f06dbeec701cca6c5b3b8a9b25fa0263a0739c6171710ed67f7a41. 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/QZ5FN1750560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x073bfa43a64e7bb87b11d5740a1bc1f913f4d51c1183cbd02cab90111d8f7174. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QM4CD1800019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0dbb2f66116ac13db72d38822e46d438a6e9dd73619f62ee8a54586038252e3. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USLZJ1869821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe86d5f6b53679bf31e348354fbe28efe2cc84b47be8457c711fe9e7d74515690. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/QZWV32473399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f9ce4c55aaade7238c19ea16aa6e438488568f15cd8a3ea6153c5d2b347f288. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZZ8B2416083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf4065347b7c4bae095447a582123f9ca3e5d0e2f440b2b9d82a04ae67d9b4d2. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZWDD2594047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x389ec1b9f86dd6542629a00f6ef2b5f9dec4a66a4b6b6265ce66499bd44ea976. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/QZWV32531144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x285cb8359e78e221efe4f0d81c6fcc389264d12c2e11855bf41d6b3e04e6e054. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZZ8A2509691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30ef51f32e5a9092528289f9e924612327e716db16322842105c32d403573ced. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZZ8A2509682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bb57cbb6ea7bf86eaac2a1a2930f66d901cbeff4e3742a00f3a08755c2d8308. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:07:27Z), 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/QZZ8A2509687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x712d7d15ef16b932defd2d4915fe9f9cb1552d452663cc677375885834a8139e. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZLBC2304212.
Paradise Plaza (feat. TOFUKU) - Tenkitsune Remix
Paradise Plaza (feat. TOFUKU): The Remixes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d9cd72daa4becf51af83de57628dfb91b8a5191a370447291e7b70922c03ce4. 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/USLZJ1754723.
Paradise Plaza (feat. TOFUKU) - TOFUKU Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x764ec4533acd82eb389c0133b11897e67c9274409e43586447b85a29f5a3f516. Chain 2 (Bitcoin): anchored in block 960355 (2026-07-31T05:49:18Z), 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/USLZJ1754732.
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