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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 0x77c6b792a18a7cb015d143c541e0624801416f9cc738a4b9d72eacd3b538da4d. Chain 2 (Bitcoin): anchored in block 953727 (2026-06-15T02:33:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8f682d78-951d-43bc-a3fc-9cd2daf9fa5a.json and https://artists.proofprofile.net/proofs/artist/8f682d78-951d-43bc-a3fc-9cd2daf9fa5a.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 0x115a5d7d7df30a4861f40fe798ce6485b1e2310fee53b00a908751b408731cb3. 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/TCAIY2498954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1fbe60bba905df31e82d55aba615939434f2dbd58c8b7c44990a0f81a1d1e91. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/TCAIX2498868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d0ca43640775b94426c1bcab08c7f7bf2d8e7202a1825cb068749132c601fdd. 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/TCAIX2498927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c52980341092cf79b88e22bae39565bc7c13e4c6eeb6d45dbc3dea1dd19188c. 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/TCAIX2498759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x754603a4a62f7e8bf0399c5b20e146efa61b4700f4d0f5087bba1d2ada333991. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/TCAIX2499184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ee63d323747438ec415f30b8dd9d172235f253e3b92860a8c615a538507a95e. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/TCAIX2499188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafcc8cb5f16f6f66cf24382c7a7509fe7e4652973adddc91be6ba5d56146d152. 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/TCAIX2499643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f0888af75cbc545a81213407355af834dff1fae55aa3a0adc62a90da123c7c5. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T10:09:30Z), 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/TCAIX2499649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf74f364cba080b1ce0257e73ceabe7a484a688afa4e6f6e8b8650ce672903b99. 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/TCAIX2499652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa648cae9086dedc6c83fc146af6c61cf6223efc45bd9cd487a90f06dd98a5892. 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/TCAIX2495683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49a7c3b6b800fdaddf32595e9341e140e6c08b7018fa86735d8847bafedfe618. 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/TCAIX2495769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefbbb0a9630dbd3d1dc206723b20425b1c4074f087fc580e52f69041800df378. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/TCAIX2495779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed80b6fe0c0783fadcf1bece95fa5d34df204f4157db5a0845b34787dfdcb89e. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/TCAIX2495788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02e23fe38c60f1a8aa2e76feca1c687c8305805f896c188af2e02b110d8f8c04. 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/TCAIX2495797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd22024146f32dad043b510d9a3a9056f80898f57d3a0a4380b13dd7350a9975b. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/TCAIY2495802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81ce9ba49391e86ba08bad103efed542a2efa4f18eeedbd4d9d65d2ed90f553e. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/TCAIX2498897.
Scars (Sins of My Mother Faith of My Father)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f1cb59aa5f45bfc26d9bfd4b0d938b8b4c3084a7b399f45b6a12e8adca5da25. 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/QM42K1879178.