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 0x5d7b4266abd801f90dd5ae68ade13599420b8edc3d5a888aa59a25b9a33c89f8. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ce0e14e9-e7e8-4912-a204-6dee4079191e.json and https://artists.proofprofile.net/proofs/artist/ce0e14e9-e7e8-4912-a204-6dee4079191e.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 0xa15cea30d76cd7b7119585a5b071c13ab13fe9a8e6ed08e31cd1a47df2a84e02. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T21:01:17Z), 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/QZHN82033549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2acb9dc7efcd9ac4f2137e482df9c539e346df450979329dbd1c22913124e960. 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/QZK6N2028243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05fab2b7d1e0fb7c0685aeb1b4d843cb5ea75e4a046a7b3d8f9f08073b181167. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZES92273856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce7fdd120b3524ee0cb14265f97564286367d91cd66c323ea4501946826f8e32. 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/QZK6P2270018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bfe5b10c822c3b8af5d4cc37361c16c458189ce67bece1e928dacd8f6409777. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZK6L2356995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51fdc457c4644e27217a897a1f312f243630cfa3d2486d59ce180f1724c0a4fc. 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/QZK6L2356996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62c8d483f4f88ab39cf974e943e17a970076aeb9acea17c67fe17d14f31aed2a. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:04:04Z), 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/QZK6L2356997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd1587a21dac89377656f40a2cd46a785aa8fc826e644a61573c51219da3264d. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/QZK6L2356998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f666843ea5103582e93b83b1a5aacaede8caaa8ea27b8ae7bb2abd36c566ece. 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/QZK6L2356999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbf599a0964a7716562eb68f5c28ea9ee07849f3699299acf5ba654ffe0ba0be. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZK6L2357000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02d5a60ae6487b53d95c7bf7e90c05ad1a3495b3e3bfd98ec360abfb6ab4df48. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/QZMEN2387860.
A Fortune Teller's Ballad (The Departure)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f57b780eb64f95ca8e40a1ba91d8280e23efff7034d78d491e439801ec6db0c. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZWFF2331439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc45089931bc5e5deb8c48e47d443596a4ab136f7347f75bc9b4792c6d70eccf4. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T09:54:13Z), 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/QZFYY2539881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d408b423e1471f919c0dc43086017ed05b9dd7c5932867c68233cd202e6e48a. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZFYY2539882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95ef07ca96386bebb03c31b9ef61605f318cfebeeaf0f3bf8f850a1f78fb8900. 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/QZFYY2539883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d2ac759fba1bffc8fa1bc0846a020d1212295acb3ba07baac7dd29a31cb78b1. Chain 2 (Bitcoin): anchored in block 959026 (2026-07-21T18:26:18Z), 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/QZFYY2539884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x155dd8eb28d9a62c57a6fe2848e05f2c77f9ddb3afefe87a4dc338160c57a962. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/QZFYY2539885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0603f85634c7be54d4f8cf7b44a74cbc59233435ea5e8abee7738cb6e7a784e. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:56:26Z), 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/QZFYY2539886.