1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xb01b603e72171020ce1689974d16864bd0d3d3c24c191c29f4d14ce1ee7bc5fa. 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/c9f4b130-1b2c-42d8-805f-5eb35f6a1ee3.json and https://artists.proofprofile.net/proofs/artist/c9f4b130-1b2c-42d8-805f-5eb35f6a1ee3.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 → block OTSBitcoinBlock must exist at that height 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 0x0fedac715db5fe26d51b4ed11e6c4a1cf98f9f2a89d36db16b6525d8529a7395. 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/DGA0M2400465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe41466ff940ef241c00288a825531874ebd8c859e665bb023f7300d9a9bcfc1. 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/DGA0M2400466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cbc0f839372783ccea872d167024b440fc4c36caddf80f055fae88e032291aa. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DGA0M2400467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe93a508fd35858ec0901bfcc4de10c8c3fbd9b58965a81b705e1ddf0a76af716. 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/DGA0M2400468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe969e6f797d491998e9f6685d13ad1c2ce432676db2d0d51c525b910e1e73976. 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/DGA0M2400471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fe7e64e74278b47339cacdaa4ab6bda5041cade1a954bcc4c607e28a7422b70. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DGA0M2400472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x982735217edcf30e4047525a728de4b40c255efe2470b3daa829736658b1f93e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DGA062488588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7546833a997ad711c0c956a3e959b215e968e30979f53ae8fbb5407b1adcfb8. 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/DGA082440667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a6b0ffb847d6525fbc13f69f85f6eb21ce180a3c3ed4d272c33f6598df9a4c5. 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/DGA082440669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac2d63a0452537d8193f7dc922eaa3d2609f039f073e1f37856517d38cd39b53. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DGA082440671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa45375594d52c63296447c4964b6fce059c0d45171928b2ec645e26bd6807bbe. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DGA082440673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc5692cc67a34c2c3c5dd9727edf41b79735aaff87b3bc728f1c60bbc5a1573a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DGA082440674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1e954283d635ff1ae965818dabd299168e6a430a1891fd2b81bce8854ed67c2. 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/FR59R2213463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdfc1f02214b8fd8ad39198eb48847287926b474b56ec2f08587d348e273a5fe. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FRX202082687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba92c7ad29375aa91b856655c421d78eaa2c2389e97c5a8fab1638046dbb5626. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FRX202082691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe7effa46f6571238c6ccbf29c85da04ed9188a3f831737735d42e53ec5f9bfe. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USDY42432734.