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 0x2230e842a7f6f0d9655408ab278da3785638eb380efb741df968ae1bfd74c988. 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/b08a04b3-2c1a-4a4b-a9d5-13403abd0c1e.json and https://artists.proofprofile.net/proofs/artist/b08a04b3-2c1a-4a4b-a9d5-13403abd0c1e.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 0x407efc8e13ff92124e101c4043a93d36bfaed8e32d3909da830cbe6f3d8f6d71. 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/UK6KW2300349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x407efc8e13ff92124e101c4043a93d36bfaed8e32d3909da830cbe6f3d8f6d71. 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/UK6KW2300349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c360c5541b09c53c948bb041ba2e39e10aae4faa7bc3871ac10ae2672fc3664. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/UK6KW2300356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fb4a404489d96af4c2442b1edeb6a43afa8bf9868b7b5b5f10fd7162bb83ca3. 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/QZTB62390192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72d21ab8e4c6f65824a826d27fe683b42fec043ae19e2dc2ef96095df45cc06b. 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/QZPEW2472614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72d21ab8e4c6f65824a826d27fe683b42fec043ae19e2dc2ef96095df45cc06b. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZPEW2472614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fb4a404489d96af4c2442b1edeb6a43afa8bf9868b7b5b5f10fd7162bb83ca3. 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/QZTB62390192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcad916477263e3d516236b05135242e5ed69aba6b6de1602c3dc0c43e68c5da5. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QT2VB2477804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x044f8b2815d4b7d69c56b25f0e4f2a4a770857be91148f3e74b9ef8b793a295c. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T01:57:57Z), 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/QZPEW2498355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72d21ab8e4c6f65824a826d27fe683b42fec043ae19e2dc2ef96095df45cc06b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZPEW2472614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fb4a404489d96af4c2442b1edeb6a43afa8bf9868b7b5b5f10fd7162bb83ca3. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZTB62390192.
No One Wants To Die Alone (Acoustic Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x044f8b2815d4b7d69c56b25f0e4f2a4a770857be91148f3e74b9ef8b793a295c. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZPEW2498355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cefb635a467553de2693183b68af35e226b95a373a3214ae2fb7b7c7ed032a3. 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/UK6KW2300331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fb4a404489d96af4c2442b1edeb6a43afa8bf9868b7b5b5f10fd7162bb83ca3. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZTB62390192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72d21ab8e4c6f65824a826d27fe683b42fec043ae19e2dc2ef96095df45cc06b. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-02T22:22:35Z), 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/QZPEW2472614.
No One Wants To Die Alone - Acoustic Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x411e4a88c4f403647e31a8f4401b6441bd3e6a00246b22f2e911c5e11c928c97. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/QZPEW2503997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcad916477263e3d516236b05135242e5ed69aba6b6de1602c3dc0c43e68c5da5. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:07:42Z), 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/QT2VB2477804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x044f8b2815d4b7d69c56b25f0e4f2a4a770857be91148f3e74b9ef8b793a295c. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T08:55:14Z), 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/QZPEW2498355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c507af21559ead3002cb96e55dbc97531d1afff906e7cfb3ddfd6c796dc5d4c. 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/QZWH32500495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd24b573b2afa137b8944cf003c3d762091ceb09a2bfca1946d948eef16586ae8. 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/QZWH32500397.