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 0xc24c473065edfe01eebb3f73c49a0fc50462187a091335baf0654f54590deea7. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/113ddfc7-2d50-407e-9179-cf81ba57a2c8.json and https://artists.proofprofile.net/proofs/artist/113ddfc7-2d50-407e-9179-cf81ba57a2c8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
rain stops, good-bye - Valentine's Edition
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 0x9a7aa6ba4a97e9f828ef5c487485bfe6481899966e508fd45c1cf00ea4829450. 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/JPC231600080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6e2849ddeeccb13fc9f65b9ca6ca0c246b6874fd6411d8674f128422703cc00. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/JPC231600081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x284afb3dcbdb4ecbf69b5ab42eef5cef875858423de7bacd5b0d67db478eb353. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/JPC231600083.
It's no way - acoustic ver.(feat.Da-little)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9b552688352a03e23ed568e5cbf20fed1e8b88b536236ad507a4be1e0a3f733. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/JPC231600087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cc0139ed2729a7354e1f1e61a6a9cdb8b40f91ac0df64e3cf7df73e7c2f5d72. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/JPC231600089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a7aa6ba4a97e9f828ef5c487485bfe6481899966e508fd45c1cf00ea4829450. 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/JPC231600080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62b42763ca9adc7aab763209cc379b992aa923bffa71e1291c8d16db2a2e5dd0. 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/JPC231600086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe183a5adff8f849ac5f62b08e3b8f344d6c74e7bcd2af7a1253eb9993d3e60db. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/JPC231600594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3da29cdf1f0e03863725e7710c7714fbda078411b5af3ca1f12f4bad8e860692. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/JPC231600595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x827a8f709d44237df5c7e8750209f596d66cb68cb064b4b33f07a6e1507ca307. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/JPPC01702522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55ce897d3078389f67584794d68fa2fba4e9b165a294a6dc0fb892a2402eb37e. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:05:32Z), 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/JPPC01702521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec9275ae6a565d62370e3b5e914ffe4c153a5a52f0a0f6b14b142cf63b09b790. 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/JPPC01702518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fd0faa6198a886e5f00e11a2c6024669a39a78cf57f96e8d6b75928ac170900. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/JPPC01702515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86bee012439f37c8f832125c9131d6f7df7275a9bbabf16d9bf69a1934fff550. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/JPPC01702511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34a4b9bc1ade927d924d37b09141a84e58ad7e555dd398509b049dd34a2dcb4c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TCJPI1999317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8033d8400d8497d5dad6a959cc7e87985e227b55c24237dcc147d0f981d4c9d0. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCJPJ1938144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d74da5e0695313101303908745426a233e98887f7640188e06800b1829cdb03. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/JPQ892200621.
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