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 0x5e88baea2d71ae3f651a29f8c88b77190c0c4fb4c1563a54a56cca5fd02e04b8. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/22d6f4ac-c9fa-4820-93d7-bf447793a661.json and https://artists.proofprofile.net/proofs/artist/22d6f4ac-c9fa-4820-93d7-bf447793a661.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 0x7c5d60f46789ca15fb97c77219f0ad9969d5d91a2fb6a8d1f6ba8d19d51d37c6. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/SKE141700102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c96a1da5549f5380466de2195fd4a55989a4faf3dd3b0f0a9c52d1c7d124078. 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/SKE141700106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb594d8e7e9e54ea3bf67e93b22165a6be5b836e3ff5833f703fb6616f83d06f2. 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/SKE141700212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98d938dd376e275b90c63ede8b091e2075de4e579f93b22816aa8738eca235f2. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/SKE141700213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b59de0c0845cb0c57d2d5b059c7675308706feb7a7480d50f9b7cba7522b151. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/SKE141700201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda56bbb560356522f644086fdf5de75906053639332b8d58f7be354122fda5e9. 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/SKE141700303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08d36026ca1dd3c4f596fc59470b1b69e7230c32382de0f2352beea76d82800a. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/SKE141700304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29e71a637af6286ced9da5946b77f4bdd5947e0d4d4a9faaed0b07dc6d7eddd6. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T03:36:15Z), 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/SKE141700307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65f4a368c10653ece41bf7f1662a9bfe590445cb7e19d71e7ea427e550454fb7. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/SKE141700309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x387132447336d117ac1a4924b80a2e2cc5b94a53b70cf80deb024e5a397fd684. 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/SKE141700311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e8d1f27e8371aa42cb99755e4118417bfe0021d8acf6e68f8f247f9ad7e5384. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/SKE141700313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe034bd041f8820dd8d48d94c15c9d21d1127cf8701b833d4a65c90575ed29e11. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/SKE141700501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6577a8a5a8d2047bbba5a9c3c045ec2206138604ab6438a96dc4102f49f4666. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/SKE141700502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a2ed1b47f0c18fad5adc68ca8d25c6358028eaa1b601836a3c4da5d6511901a. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/SKE141700414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6d9ee5fa49b1f9fc8772144949ba897b993e3f3ea97525cf539d6b471857071. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/SKE141700404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ffb2e4ded4934e06a829e3336cf4fe2e67f59002ca132ac873b2e3d993e7e24. 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/SKE141700405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a319701f85fd2e872d3e1cdd0522d4b22120dbecf9768eee1cd196435884dd3. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/SKE141700411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6998cbf8d23a015725803b870e152ec82342ae91b4b9229a1d73395cd94c2ab6. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:03:56Z), 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/SKE141700412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb65c5267f55ad4ded2a4505520d6121576f5d190e6b2e39b8c5b202bba0fd90. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/SKE141700602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x958588100a0c37d8751bf0f39a4380eca03ca73e078164314d90aa47eba0169a. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/SKE141700605.