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 0x4df8f396b7d9601782902b91802ad98cf0457c3f9da0efd7d380b7de964a5574. 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/0ee0985f-1d68-4da0-afb5-8a0f13b721a0.json and https://artists.proofprofile.net/proofs/artist/0ee0985f-1d68-4da0-afb5-8a0f13b721a0.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 0x290a822996b2bdc766632a7d9afe0c3b2a47bcaad90ae77420cc316b817bff6e. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-02T21:02:00Z), 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/FRX761592410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2903028877d828953c4307c6c902c15d4e5ee16241f83656f5930f004c26e9d3. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/FRX761592413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b448d52124c692ef4e11cc2305fa65f830ed21e81fcb92bcb87e57b139d6483. 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/FRX761592417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76b710bbd72955a484fe781a0f0cef537ef2822b6a0b35ff14d0216ecf7a5309. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/FRX761592420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a0371572ec86f0fbf9fc34680c49ec26424788854db6e43162f5651595e23ad. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/FRX761592421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52cf7369e0604bc38e229afe40fb67a1a327da4a5ded8ea91aaa7108301bad24. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:22:37Z), 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/FR10S1592650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33b08aef3b164fd7f2560ae13effb31e9cf4874a3b6e5d8af0766013da6c7d03. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-02T21:02:00Z), 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/FR10S1592658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1857c9c63e02445dc21cc59e68d32c088562c7dd461e87571fefc62340031c0c. 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/FR10S1592662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffaf55e2fdc8dc6c06c837b65e5b0f222566de6e83d38bdf758f2c584e4f949d. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:48:17Z), 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/FR10S1592667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x313e5fe0a5d698b0d922aa7193cc58a9c25047ec463f14740662510090f6412d. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:53:38Z), 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/FR10S1592673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9ec310523474a9a1d6050d1857d8cd1947a9f3212514276cd306b76d44121c1. 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/FR10S1592677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ac7ecf20660ad67490c4f89c81d1e39dfc73b7dd49d34cd8260d88f4f99b353. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/FR10S1592684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7e6e6a615b7892b7bcae7071e3a15f6029e93ab45adbf31875f39d58ea18794. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/FR2X41858947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x441ed22874621ceb8b3d0fc6293668d43b974ad924fea283563b05b505fde0c6. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/FR10S1978164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52fc3cd25022923ce8714d73606c19810deb52c2eacca8473a740ad39dda1eb2. 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/FR59R1944066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa69c9308943687c6416d3b521cb37a280b7938597095ae85ffcde3c05d83862f. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:28:20Z), 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/FR59R1944072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59861264ccf3f9807ab4c3fab678c6e9f703b488f5221d36ef8a16d62a013bbf. 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/QZN882125616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8df6489ff6d82e215b85196c1b0ac271252b369fb44db877e5e072cab2c3b1d. 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/FRX762159488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1948ffd455e14f4b16b1181274ef57ea7840b17a6aa35f519b528e302de88d8e. 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/FR10S1592661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa315ccfeaec9e981956d8aa5956544149ed7d002f1d5405d15cba9c3fa81733. 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/FR59R1641746.