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 0x7c7b6cda1048e7eb027b8ecdbc449c0557f146cbdf0f1425f3660d275fab4928. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/28bd0374-5103-4f94-b9a8-e1c5cee26478.json and https://artists.proofprofile.net/proofs/artist/28bd0374-5103-4f94-b9a8-e1c5cee26478.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Meditative Rhythms (Rhythmic Trance for Contemplation and Meditation)
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 0x75eb19c0e3aa1ddc367fa7371ae7899deffd8b9ed9fa8190cc537538837fcdf6. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/TCAEG1964404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9dd8133641cea8aef4f7393554a11978b65784835eaaa60c0030a759bab9922. 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/TCAEG1965317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3de995fb49f6d40bf3885299d2e6e183c33490d605dfdda06339ba9047e0b6a7. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/TCAEG1965318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e2cddca2c24b0d63a0ae30ffb5721c011529d5f762704dede9c34e186d50f4a. 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/TCAEG1965321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ac59e8ed2e2f37b4361bd852580d7fc1d058b5d4541c141cb5a3b6ba326282a. 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/TCAEG1965326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf71974f466f3d7d6c5fc6bbd5452e6fe7e6651142eccb86df084e7e4c5cf26c1. Chain 2 (Bitcoin): anchored in block 959018 (2026-07-21T14:12:28Z), 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/TCAEG1965327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86b80821ac47719f4d122e14bdf4f72aac3fecc3d76f8cab7c24aa6877095d59. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/TCAEG1965328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a1177f200ea12f5efbcb151c8279a8d3805f6150ca188031a4457665ef4e562. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/TCAEG1965335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bc5096d1d7df547b22c37a4c6c0b16a299d645585002762a168da9ed7b00d21. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/TCAEG1965338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf95bb6ffa2476b1fc94696a2601ea88fe786466206e97af451aaf47def65254a. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/TCAEG1965353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf04bbd995f7f2988a53fa5e9610a7baf2e175e626be7c102e1db3aae6dced31a. 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/TCAEG1965355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43ed6da027d5585966fa3cf9ce11a82123fa3a61f0b3e5d2dc6291344086a978. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T08:14:15Z), 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/TCAEG1965356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e0b9e7c2fd42bdddf2b4cb8a2b36d87e30cb7913dfa664082e4e216d4f783c4. 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/TCAEG1965359.