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 0x795ffc2c592ed0f310b5ae47005cee44badb93db47c91b44c2b82713b95b237d. 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/21ee03e4-d77c-4186-b498-e9e071a8dd60.json and https://artists.proofprofile.net/proofs/artist/21ee03e4-d77c-4186-b498-e9e071a8dd60.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 0xb12d81eceffb27a3b7965ae39932a725f20235bb723c0d95662f084199456f33. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:27:20Z), 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/ITAC21500127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf449c76fdd1540d46d18f3772bf3b3e740af2e5be41e2ee5631dcb7b844aa9e8. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/ITAC21500128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x175197a81570941a9d048f7f6b4d0022518219135491d20396474cd2f80d9c5a. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/ITAC21500129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdba1c7025a8351fdc4a22ad296cf06bfce3d25861de4ced29b9a3969a5687c18. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/ITAC21500130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d9108ebb810b9b3df42e8a57c2508e30f66af05dadb36371672b4cd96a3cf4f. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/ITAC21500131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58d188ca34e8cb84007a3aad7a0eff6c15e35bb90f8d9a0e2e3f304e672db9c5. 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/CUA0B2100201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe62a4037e69f9bd7b38c3d3765be53bd101ebed5c2913cc1999242e34822f08b. 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/CUA0B2200065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d480a07e224246a187d81912e3b09027fdea57e4984f8bbdb29ce208fd4ad72. 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/CUA0B2200081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcb864bb3984d223f472511571ad12fdda8a1cb06abc6a43df451d08cc3c39fc. 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/CUA0B2200082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb251bc06967fd9df7fb76d7612d5ece080cfe6667f4fdadee6700bf88653a930. 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/CUA0B2200075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d2a9d9584973e49b708e86e6b6833a4743d3c3181439e20ee64fb095c2aeee2. 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/CUA0B2200076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc66c5087635638372efe298a0bf32d4da67c030c7f6687087d839bbe13c89368. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/CUA0B2200077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48a7027c413f0271233a58180ac51efd636180dc2ff15a018834b17535c021b9. 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/CUA0B2200078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x635f30e5be867e2a7eafd1bb27f2c1659ce8205ecdb5d59de6a4549ca407cd7a. 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/CUA0B2200079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e6cb49e82a5f6d1f3206fc5af861e158dbee7de0ded5ad427e50abf210ae7ad. 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/CUA0B2200080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d480a07e224246a187d81912e3b09027fdea57e4984f8bbdb29ce208fd4ad72. 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/CUA0B2200081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcb864bb3984d223f472511571ad12fdda8a1cb06abc6a43df451d08cc3c39fc. 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/CUA0B2200082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x318d0ae670a2dd5620ec9a89097c2ad16740d9d8e934ee18d3129892ab232e0c. 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/CUA0B2200083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x455c7360500f30cd94abe888e5cb7bc0b349533334c79c54eccd4a524a9718e6. 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/CUA0B2200085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1040aead3fc4cb37c0445288ee47698c0933d859ccc2b8aa0bd6b256bf66e208. 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/QZDA52390662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ab007053e3eea2263546fcd444aa276bf607ef14b85b21d71596f32c80a4caa. 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/QZRP52310340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54c89f426c951ff763cd19c125ef71dcae7d8a330b01af101a68917acecb4ba9. 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/QZWFJ2365409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53c492c9c7ac299d6de17559347ff9e816c097abd94737d28a93dc96d15b93ed. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZK6G2483315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb521a59adfa9597cae4ce2c1537740d9d6d2f16a1698fd7241a265950dd9d85. 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/QZK6J2501416.