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 0x7b3ebef48dd3279440c3bfee834a5c535bb6416d35578df9cb79fa64eaf0ee9d. Chain 2 (Bitcoin): anchored in block 953598 (2026-06-14T06:40:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0c51fd45-9905-4e3f-bfbb-5b774a56be86.json and https://artists.proofprofile.net/proofs/artist/0c51fd45-9905-4e3f-bfbb-5b774a56be86.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 0xccb3e26bd00b2babf1f5b60b64b149c2ceff2a2758960507727110556d12531e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/KSA002300469.
Take A Deep Breath (feat. chan, Hash Swan)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48bf7fa812ac0fccae87a44141a012fecaadb16e76db747ff0d8d36717737a73. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/KSA002300470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7193c1951dd42d46aa571a5be0b672ff54c02cb6d9cb32907ac9f4acc50ae948. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/KSA002300471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedba2423734ad96d2b3c5a091088f815cdb44f884121c886b181f79eb9c643b9. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/KSA002300472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec6b23859872d3063ca3fcef2ac562b9d9092a5a065ca8d9fef8df8585168892. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/KSA002300473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45cc627de512eb0fdcedb2ad040acedf89e2f2a6cd1eafd45c9817e0c59133aa. Chain 2 (Bitcoin): anchored in block 957025 (2026-07-07T10:59:31Z), 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/KSA002300243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45cc627de512eb0fdcedb2ad040acedf89e2f2a6cd1eafd45c9817e0c59133aa. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/KSA002300243.
Balaclava (Feat. Street Baby, ZENE THE ZILLA, Skinny Brown, Khakii, cwar, ksmartboi, Layone, KAMBO, Don Mills) [REMIX]
Balaclava (Feat. Street Baby, ZENE THE ZILLA, Skinny Brown, Khakii, cwar, ksmartboi, Layone, KAMBO, Don Mills) - REMIX
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe02c024137411ca17c2f9150e8914dad9d23c37582db6409991d78464aa4bb59. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ZZA0P2309671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e4e8f68b6b7da5127ae920bb2007e6e941c431a97c6c54f31d463287890dddf. 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/KSA002301629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfeb6b94eb2c6ce6ca48abed3b435da3204dc3bdc90283738e6b27bc4aa1d156. 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/KSA002301630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18d6e55fe0b9a12fa6a58b6b5249604ec787cd32435611c4d1bb0b2c285352ae. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/KSA002301631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40a94130713431fc5b851c15bfcfd4a4d7c2cc3191c62279e53f6012153371ee. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/KSA002301632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07ee489918b781a18c567ac4f2ab60bd11dbee43e1fe0bf5e46bbe6240385cca. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/KSA002301633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c378d8ef26c2875cce6c7b89119c0ff2d6b16945b30f1933c86e56628603a37. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/KSA002301634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ec1ffd6bb70390a89bf7e3204629da3f8e2674db89eb3388f2926b732736e0e. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), 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/KSA002301635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeef5709f1c72bdf23a17051a4278cd1f29bf8d4d627e57aabfcf08e6540c2f2e. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), 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/KSA002301636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e0e0e452d7c64e4c3638731bd3b8a2512fd42eb1e03e5cbcfeb685f2b615cb9. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/KSA002301637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6357bdaa85e67978b855748048c4819a82c531e567ad903f0c97b131a35bc87. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/KSA002301638.