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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf339efddc26b92dbe790374839bc3d2be3b34a40e8739a694c249a47a1425c76. 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/4109793a-7df6-45e0-8ab8-aa7cf9e1792d.json and https://artists.proofprofile.net/proofs/artist/4109793a-7df6-45e0-8ab8-aa7cf9e1792d.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc2b7d251e99ed074a644b5aa18b60787927458d5c48a19add9af2e82d457064. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/KRUM72200336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81da2c64a07ba1d2efc2702f795155c23ba650b41f3fd1fdb890517a03eddfa9. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/KRUM72200337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1269ee56ed2af4ef2821a77f54938d8ff0731bffee8820229e8578004dbcdd17. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/KRUM72200338.
Before 10 Minutes (Hommage á Stevie Wonder’s Superstition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe28b2fb8e021f8845052d273196eaf77a046fcf9f38958f2d30b9d043e383632. 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/KRUM72200340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12db6822bd5e3911a5291893274d9f539d986809fb50d9aada07584d14a9019d. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/KRUM72200341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ddd98dec091978a6a8d0829e53b5269aed6b14a35ac47d91c904e86bd9f192f. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/KRUM72200343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6ab463fdc7adf138644962b4293663c5ebf31b1948c71b335ce40bae29fcf4a. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/KRUM72200344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4beadfb6d916486b2d1691704b837a68adbd0364fa4be5c1de1c15ff0677c322. 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/KRUM72200345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14dcaede3d297090795afac2afe9f6705a7755f4f969a441028b9d5b4b0a28c8. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), 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/KRB472302591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aea6b7884ba96f675cba05f05abf86ad4a47fde91eedf0aaae5277e808baf87. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:07:35Z), 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/KRB472400607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb0d86f9ed5a4bcc7255438eeb4148b90ea4a7626bbd42610e3f7175b2c54926. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/KRB472400608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ee4695c87ef5d2f1301a62589b5dbe5f5407b61e1f0bdd45b14a8f364d16c02. 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/KRB472400609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ddfc29ce3bb9dcc62f9701d9af51af00c8c4c95053a0db56997a023c81dc275. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/KRB472400610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b31719027e23a9300095d3be6a97cede1e5a572e6039c965b65f250b5576c29. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/KRB472403888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56bbd8aca81b54df144a64852288f5672d11145a2417196e7f599fe9187a7433. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:22:44Z), 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/KRB472403889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cedbb8df8059454c7e05a43180af74722159fcdf46bb591c1adb4621756a323. 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/KRB472403890.