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 0xd70c148b516b4d09574bf77e895130f2c31a29262a7a8b0661e58d6969f13994. Chain 2 (Bitcoin): anchored in block 953596 (2026-06-14T06:21:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/098d887c-428c-4155-b54e-e7fd3d07d3c9.json and https://artists.proofprofile.net/proofs/artist/098d887c-428c-4155-b54e-e7fd3d07d3c9.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 0x2a9f62644903f118aa8cc95d06be4c9da4df7bdab5c679c1f6ad6e28b59320ac. 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/US25L0800507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x533468d3074f5791d639492982f9b47ac60af63248f819345247fe32fec7d890. 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/US25L0800508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc30219c526709f47a26da9eadc62476075ef9910005bfc1458dc768fa6e87a2a. 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/US25L0800509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f9dfe1b8d7f89d79cd8dcbc54bce51d31350876035e6f20c34ba9e828346b24. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/US25L0800510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd45f597d313eec7238a1c60d2160d3401fc8167a6e252dc805be29164e74d344. 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/US25L0800511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7553cc84a702df342c706e425b525fcf4943594f2ae39493e4c293a13a5331de. 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/US25L0800512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f941a2e6327061c5fb2d74379d908acf8ed053ec23c9f7c2ef44c075831af40. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/US25L0800513.
People Of All Nations (The Worship Anthem)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53e7a269700a4894b5a83e0629807eba95d93680cee1186b192b4b93e2e6f47c. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/US25L0800514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0e98f90780bb6eab2b83bc9cee36158c3e2d020ab4ab399a77fda831ad63f1a. 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/US25L0800515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd85e3661eab36d1dd907b865738185779257ba05e2d93546ca4636f52eae2b11. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/US25L0800516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e3ddadf03f6b892b1a747ed32a31e1bfd315b8142c329337e24586a7bfcee50. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/US25L0800517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x612ec2511d9e054f413598ab7f7be48592c7330c0803db9ad83a840e9bb87b83. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/US25L0800518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x893f9ef14af732369bd1ed659f835c0ed75803af99eb026725225204eba642b3. 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/US25L0800519.
People Of All Nations (The Worship Anthem) - Reprise
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9838367ab247e8f70beeb01918c03b5dd4cfc4f41654aea195c9e3a94d926ed7. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/US25L0800520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e3ddadf03f6b892b1a747ed32a31e1bfd315b8142c329337e24586a7bfcee50. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/US25L0800517.