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 0x84963078b7b575708192dc22f14692e075ad02d6169250b39ea26ed6d53c0cf5. Chain 2 (Bitcoin): anchored in block 953741 (2026-06-15T04:44:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9ac7e404-48d8-47ac-85fc-c1f91bf6dcb5.json and https://artists.proofprofile.net/proofs/artist/9ac7e404-48d8-47ac-85fc-c1f91bf6dcb5.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 0xb917eae78a2789efa0a5f107b0d79191cad03e37f00126429921f7c7a7f0d4a4. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/ES71G2113620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dbe0bdd4dafe0cc306a17bd64bb0f16bc79a012ad7a62c8f7d3c0b54e3e1c87. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/ES71G2113622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb07c94b617e1a6f8ce34cd5bb5e07d905afd04f3ec69086b9571e51386d8fd5. 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/ES71G2203305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdacaabd592faa5c251203274c0677a76f025df4cf6dd13a0f4dd68aed940260c. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/ES71G2319203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6fc2ef0e595810c8d53a85de3637a5a906868964621bff706d0b90c60717ad5. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZDQH2508389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f623f55383c63e721c378680a308b8a7f531254d46d650ad024e0347b90bcc0. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QZDQH2508629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0ca971b2b3afa8a093e3c451206c7922f06fb2b558428402b15dc3a494f5720. 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/QZDQH2509269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5828de79bfa417cc23f77cb7debbcfd396905fd858dc059ad93dcea97710e1f6. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZDQH2509306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a8878eddef9cb4b2006e6e0190d7a7592302cc8ebf6e8ba654411bca49f9548. 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/QZDQH2509308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc18f580424a783ebeddbf81e4fd07879f150b5d4106319b5857f4945b0f9578. 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/QZDQH2509271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cfc607f38bc20388ed091c45b1014266240c35c5aed5e357485c210ed78c23a. 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/QZDQH2509302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7651215378075bf6cc011bdda4a9d9763e3f549fd12bd6a13dd915cdb5851c31. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZDQH2509305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe732c89aa6585f08e768fe1f017482ac5f450ab6e2ac6eee6e81845342518a2c. 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/QZDQH2509272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x994bd0ee3c7c3e1193ae1adebe153d2303f961264d8f315421ce7327d6c0db37. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/QZDQH2509474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe35d860515352d701d604d5c54602b6fb21d881099b537570c899f9ee8a4665b. 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/QZDQH2509461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44b8b2cf32672957d505aa40d6ea996c95c3a15704fe1f8b5c9def612fc76f02. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T07:27:09Z), 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/QZDQH2509467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeead351f96bf237a289faeea15942ad9432b768edcc30ecc4d8a313e8b3e9ca. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZDQH2509470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x012067ea9525499a641a19c2cf9ec73d7aa83eb89f4c91b096a96a0f5d23f2dd. 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/QZDQH2509471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x219bc7cea32e312ecb04c8fbc464ac48437f54701f903b9ae337de9ce5a5ae57. 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/QZDQH2509476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69365b6953b3df83d6d2f717c521a15ce4d107174c1722f2d7f5162fd67ae928. 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/QZDQH2509472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccc8763722f2bf830600b246bff572bdaf40049ed07d21e502b9a1001638894b. 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/QZDQH2509478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee9c81ec7818999dc8ee9ab4dbee9f45cfe25de548448053fc1aca3e04610f98. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/QZDQH2509469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2685c2fbbc2ba253db0ee6de949181bb152d0414d7553abb7218c1764fb7688. 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/QZDQH2509465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa22293a596ea30e3d79051dde18b647efc80e2ff0c3b1a591566acdec748f1f3. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZDQH2509473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6227aa875daf4e14d04e5a253422659e5b5997719411dd7899da5ec3018f275b. 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/QZDQH2509468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d8ea16b4b257ed3164cce6318d58ac0defe79de3c172f96d7648699e12d54ff. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZDQH2509634.
Zumba Tu Tema 9 - Instrumental #5 (Ghost again Money Gang Victory)
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