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 0xb619e86d672bca3f23dfdefaab4bbd67fc32b88e6ffb20a5e980906039594b3e. Chain 2 (Bitcoin): anchored in block 953758 (2026-06-15T07:48:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/af64f29d-1613-4894-b7be-b7fcdae79747.json and https://artists.proofprofile.net/proofs/artist/af64f29d-1613-4894-b7be-b7fcdae79747.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Come Over (feat. Ice Prince, Chef 187 & Jorzzi)
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 0x5a07040ef4d075c10f3c359d0f6cc7ffcdaeb0ef62a196c645119df2ddb31227. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ZA56E2420131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fcfbb28948b05cfd0ec164ee4c46e21eff51f55a2a7507922a3005e9e8829d0. 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/QZZ7R2593192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7979fd22a5ec35ae174813bb64dfcb1cf4559469e8b3b2695c3f26f22138a1ae. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/QZZ7R2593193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe1797b511ec3c40bce24816948be5c94244ca8d5e4752279fdac8401d45589d. 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/QZZ7R2593194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06aa1d75429a43165e31bd968f070a7f3aaad5cb168853133ce7b3ce22b29eb5. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T09:44:54Z), 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/QZZ7R2593195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32f306208e9be1789335a399e0fd445a7c2390e52a200fdf3d5fe08ea20499d0. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/QZZ7R2593196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd54655c099801cf958c17ecc4c0a54bc964a709810ed313605b6bc771e7a6ea6. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QZZ7R2593197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb10235605c1c4cbb8fbbd4962be27ec24504205c253272a91f926a75f0d83760. 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/QZZ7R2593198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef3a855570edcfa1227b1ccc466e9854d77780a0df21e3acf71308b53bad63a4. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZZ7R2593199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8db38a510ab6e012b8ebb7a2ced3bce1390efbc5dc9687624165b118acd555d7. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZZ7R2593200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbed7d5112a5fa95fa62a517e53377d13cf0175414358a5a93b425a2259990745. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZZ7R2593201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x347be670a4174d64861a6c2c0bdebc1cd269d791dba719009d9ed6443581bffc. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/QZZ7R2593202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x152ccd8e1a144ae8f5392991fe9e4994d63df38a19063a5a3d86a807cf6dcda4. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZZ7R2593203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc25338a961c2f8699fa1ed9a31cdb54133f84b1373c9cb59cf6468eba80667c4. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZZ7R2593204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb273743d41498b1ee5bc882b344814a437b059192b54d05e8c4eb728bc64bb5. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/QZZ7R2593205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60e01c99f5b2c9ea310f2e0c9ba0ee09335a63c2f45182e27b7ea2cad00bcf7a. 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/QZZ7R2593206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd830043fe0fb2b54553b9908b45209172aeeef21fdfc7ab89d28bd8f738d2408. 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/QZZ7R2593207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x745513321abcf2d055ae5ceea3ae3d4897266b333aedda87c35b09cc56078705. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/QZZ7R2593208.