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 0x431d0176d5767d18996a9ac9aa750cab3c44994f22183cff97b1b080f5b56d5b. 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/6be1a4be-8721-4bbc-88e8-4b4eb8540ac8.json and https://artists.proofprofile.net/proofs/artist/6be1a4be-8721-4bbc-88e8-4b4eb8540ac8.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 0xfe242a5793c53de4d67c285c6e88ec172559a2f308e20312e3c48c84569a9705. 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/DEW922301841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc32d092781320a630ae39f85c58a9aadb5cfe8f6953492ec2da9d512fce38a88. 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/DEW922301842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbae565e579f0d9aa21f6575a486c40059c87d71c4efe8b42da1419086652bf4a. 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/DEW922401899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc437e60a20fc4021f93f2ee7711ac2c32fc91319bb8730c80eb320ff52c0dcdd. 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/DEW922501916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d72e8d65838c1349835c12419c49765c9f37ae47c9430c68f56a8141602c715. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEW922501922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2ab7964251b7223892a825e83a1c5e28036c3365778edf28dd4295504587ae1. 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/DEW922501917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e2d1ba4dd1de7e2e95a311a6880435b6489f9ca610af21cbe664f8cd7a0c9b7. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEW922501923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45ec990a9119626bb8de2920dac9faa5f1e3a2b650f2cb6a91db4fb0c19d4e53. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEW922501924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8046bb56f7255c3680e2a6b70558f6308771a313728e7b65372fe9245c8e13be. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEW922501918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50f0fea3dbe0413f91c57dbf93a0409d36bf66a147fc034770b9beff7439f882. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEW922501925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2738c4b7f5111c4b39318731e798d13b5ad680ca2b24ce9e15e05c5a6f00558. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEW922501919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03e7e2b82c5f07a23227fae94d406b41ae64891608db81e6213ee1cdc8c9d2aa. 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/DEW922501920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5401a35f086ae3254984e2f987b54312448691a10a34c92f8a70afff79ca8b4a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEW922501926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f8c3e5f1bd8e2508568ee845c0425ec2b67010c62fa8cecf335ff65166a558d. 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/DEW922501927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f79f650c84caa608f94f1f489b2e9dbbd96450911a929681e1e28042fbb0c83. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEW922501928.
Mann Beisst Hund - Das Instrumental Tape
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4a638c6126484fb8a5b74f42fd5c8e6ac41a5575139834603b21ea676c540c7. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEW922201666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a82d003f811989999cf7ef9684cdd947718319dc19c26678c3fbb0712fa98dd. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEW922201667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d8ee6802456226de0e7a333096db49c3150d4b3b631cb02060015bea7127849. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEW922201668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf429fecaab72d507c37fe5906e832c133045fbf415a46cf016d73c0ab5807a3f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEW922201669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd66a9ca5574e4e342153c35c85c2d9ac67f637ec8faf632c126cc6861a277efa. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEW922201670.