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 0xfe7da991b544c1dfdc452d8e9763a48bc4b39cd6f5ec7fde42996e0311ec78af. 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/2527cec5-0c99-4b4f-8503-89d5cee0125e.json and https://artists.proofprofile.net/proofs/artist/2527cec5-0c99-4b4f-8503-89d5cee0125e.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 0x2e9d8e163e52f620f86e72a3a697d0b95525da66501ec004a2ef6f6b6096ba67. 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/US4R30700685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e224fd8ab2531e19cb6268133f597918de94661f75a4ba7ed1858ff2bb4ffc0. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/US4R30700686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x873de529be45ab6425d89a10a786dcef2b6126c85a72c1855ca45b5301179fcb. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/US4R30700690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed8f55d59e3d7c4777a4e23b08a2523dca2f0933a25202dbc182c6b0c42e9ee9. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/US4R30700682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e9d8e163e52f620f86e72a3a697d0b95525da66501ec004a2ef6f6b6096ba67. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/US4R30700685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e224fd8ab2531e19cb6268133f597918de94661f75a4ba7ed1858ff2bb4ffc0. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/US4R30700686.
Alleluia to the Pachelbel Canon in D/Kyrie
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe33a389d68af95275abb49775ad8268330ee971ffe610d7c729c568671e0a28f. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/US4R30700695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a1cb9a011799d585f565ab63a5bb76a00c231526e8ed0fa3b85f997d15eb696. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/US4R30700696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe33a389d68af95275abb49775ad8268330ee971ffe610d7c729c568671e0a28f. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/US4R30700695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a1cb9a011799d585f565ab63a5bb76a00c231526e8ed0fa3b85f997d15eb696. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/US4R30700696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3eac59d0175aa519992cfbc1b9f3ca1b1536f818b0de60aebcf15c339427df5. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/US4R30700702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x332dd80e7b68746612978e4281ed2f393c085da026a995c153836dff674f5742. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/US4R30700704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3eac59d0175aa519992cfbc1b9f3ca1b1536f818b0de60aebcf15c339427df5. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T16:12:29Z), 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/US4R30700702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e669dcec37f21334a88892bd1e401041d9389483d113cfe17e0c34b23768732. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/US4R30700698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e669dcec37f21334a88892bd1e401041d9389483d113cfe17e0c34b23768732. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/US4R30700698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16e45fa825689458d9ebd65d99c87d63890dc37b04fd979019e5c7862430566f. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/CAL351500381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x910242355d4fac8dfa73f738cb150e4844b3bdf4e87a6305f7a0a5bbd13e5433. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/US4R30700678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x910242355d4fac8dfa73f738cb150e4844b3bdf4e87a6305f7a0a5bbd13e5433. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/US4R30700678.
Heart of Perfect Wisdom / A Sufi Song of Love