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 0x444e58691f4608b2077c94fa7b45cb4eb94b7563f26190d08ce346ab97efd38a. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/429acfd4-97b3-44ce-8851-9bd09af86af5.json and https://artists.proofprofile.net/proofs/artist/429acfd4-97b3-44ce-8851-9bd09af86af5.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 0x3d66dae5b4a7f08402479e1c9e9b62e74e2529547f26f93fc0ba3b203a0d7967. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NLRD52403867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcdb6f355ba1b4253516e9cc3fb84aa0eed8f2ec02fdbca1c5aa56c9461cbc52. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NLRD52304306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfa02939a72b5f16045ce941f961c4cf4154c3e731aa735ecdf6c3ac3871d0f3. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CH7812400577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e3bcdcd7dfc72be04674af9a5314230033a2294bea80820edae827ba184363f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NLRD52304328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42c78debff6ebb7c13fa4ecfc7baf4eedc41ceacf699d1021765285d77e1a1fd. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NLRD52304329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfda0d03f53346e580e08a418259faf0685b9f42717cfb580bd73f8194de9b759. 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/CH7812362442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ffa8fda4a4d113003330cde5a07f6dd7ddc3b333e63d8502a0c1adb6ad6071f. 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/DEGA22303918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb01a1671b607cb6df3a82a9db056a5e3ab7b298c17ba4f4778f6519354e8bad7. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NLRD52304359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9777280e7cb62ae4f2f8d409805aa42e98affcd19aa0437665d582b929c04d57. 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/NLRD52304351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e9cc7c94e2c94d8e639e8b8dc65a8709841e1444e68372add4221968b0007b0. 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/NLRD52119581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc38ae9a398203893543c4870eb19eeeb1f60ecfaca1dab45bf9b5a9953b9eb9d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEGA22303814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ea8767b3d1421984c12bc48b6887471a52c009160efcdada687ad18b68c89d1. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NLRD52119527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x530ba1fc6e0fb9811ecc73de06cf94a9890028b9e5fe7fde5b9f039a06900d2d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CH7812224608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc8b32cf1f0d95ef02092d98ddc61bf760539126a5c75f226f1dc0f473bcd47f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/CH7812221857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05b2b48e08bc3b3057981fdcab877f38b31d0b459cafe852494d3d6339407b8b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CH7812107297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87b485511560e71345d73f3f05b5e8ece36b51f7b328fe8370b23c7a5a289b74. 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/CH7812198040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd645f9c17439e5100d9b6a83cab3456749613602876fd76646e902d613fa4478. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CH7812194778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a2f313cc779dd72203564d926a56621409aef19e934cd00286c6a9091ef9b6e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CH7812192701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3a07b6830d23f31db451eaa11a686487aec30e2a6ada780cb8ebaf10dd6b325. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEGA22103399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x922ae6e43318e93cb7864abe88b78a4a5796bd6c7dac702da8c7924a9dbe1206. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/US83Z2049439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc937ae995525e4c4b661641f1ddc56af243bca16d7cb920e1675a0936565f80a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEGA22003297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb91e50e888dad0329f2989703e35fa30504b709956c62b49e43d165669e5a24c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEGA22003114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fe54975d0238f748aa539e132bc140f76212f9684da13048a1aac617cefb68b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEKC42200084.