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 0x82b58bc33c34140bbeb50ead2ef2ea6d2b439b242288a729718745b00f3b3bcc. Chain 2 (Bitcoin): anchored in block 953704 (2026-06-14T22:58:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7b1de34e-9632-4bfe-baba-44da459b3730.json and https://artists.proofprofile.net/proofs/artist/7b1de34e-9632-4bfe-baba-44da459b3730.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44dcddde98aa8869db87d6eedd9e28fc3315aa58f4c6e06c2d9dd1b84d8b8242. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZNWY2176558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f67a337c68bc63d830ddfb6a908dcba211a6143a6e34695bc9c36d0433bead0. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZMEQ2215822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a774c766e7535adc1c8261ae58abcf6f1cb92a2619ee44f0ed689b1e3629fb4. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:38:29Z), 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/QZNWQ2266635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4937bcf24a9de8ab2ae47349acc8a959eee02cce73a7d6e5c82b564c11ba9cff. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZNWU2319587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25c66bed48ab2000fa90e5bf7e2528f4f18f5e3c06b054a200c5d02d82f2f056. 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/QZNWV2341450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc119bbec01eeec7c94b5f552fa0aa98c042bdc2cd8b60701ec18887dac83e18d. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZNWU2341071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73eece12e1e4673ddb5d63267bdac2cca5b1e39be49c77724379bb944329b00e. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZNWU2341072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe352cb853a9accf23ef3b37a6f089982a0c32b98c428cf9af9927a62e45501bc. Chain 2 (Bitcoin): anchored in block 958681 (2026-07-19T06:14:54Z), 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/QZNWU2341073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf25890b5d21f5964ff53dbf6a2c55f4ef57b680eb6a061e05e3403f943f10e0b. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:12:07Z), 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/QZNWU2341075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fc83ad6b1819d1725afb6101ba1cef44de905679d704a0f304ec745eeeb490f. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/QZPLR2380560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa816b20a32d750fcdb5ef7be40cc239d604aa2996ba7bab78b99a17923ae2b16. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:05:42Z), 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/QZTAX2304898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3c22dbeb3d08896efa10b01b45541efcd9ca8819b7e6a6574d3cf8490eb0382. 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/QZTB52331524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8711b571f565e5176a45ae73098a7abf51d71276dc8e68e0ddbd86181fdc99a8. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZHN72472403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83f5dd8d9f8a266331bdea05e9aff7bfc0edc72bfd5261fe38a6a75540f98c44. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZHNA2560670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b2654cde9240ed05d10867b1e8be57d20b87499dd5b2635677df75ccf4f8010. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/QZK6P2580875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f8889b2fb008c01edb3127851616d214d52ac9f98038afde7104670e8662170. 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/QZNWU2578143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8051c63434729855230f389fb85a3078afb3a3fbcbf518582db17848b471531d. 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/QZNWU2581275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4184657e549524a8b778d78aa4498a50a2fba4499982c5c19558e93c40b4ea9. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZNWU2584793.