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 0x3f548dccf1644a12dca80af245a44914c897c68f18958c1a402fb001e6431a67. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2d85e29d-209f-4407-90b3-df4042e0c226.json and https://artists.proofprofile.net/proofs/artist/2d85e29d-209f-4407-90b3-df4042e0c226.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 0x282156c7646e5cf1b083ed6614f9379001d2d692f258ff0b6633715bea2f7a41. 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/CA5KR0041374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabdcd994b832da663417296f7e4a38f0d594e2788b9985baeb6595fa84b9f9f4. 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/CA5KR0041376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e44bb4c2de4ad6fca0c1b0139f278bf0520fa4a8a205f5e430aeddf6825b47e. 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/CA5KR0041381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cd26c0c59e2288c6303e7a592262de8a4296e985f1eaea3b76ec96b00dd3fe7. 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/CA5KR0001168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e507fda305a6c97476bae4f95fb9b4c992750fafbf5d4978215ed3502d9bef1. 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/CA5KR0001171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5af8f03c227f7b4803d6f48ad3ba51b12d40667effda136150145cd43502ffd1. 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/QZS632185138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62dc577c0fb588c35a64996b6d5f164704ef8632176d7ee9273e15f510f175c1. 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/DEQ022110728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa488ddb15bf4a4160f50ae378e6b63ec09a576fd885e6128a307392f869ad579. 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/DEQ022110730.
Rapid Change of Emotions (Angel Karel Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00fc516dd67862d79fb00d582abdcf425eb34ce63d3cb61b2e46eee2e5bd7c52. 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/TCAHW2440489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b2d21943d5df6f5788223efad0a1cbd5c8d51a8f27f439e309acf9c8a2fc73f. 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/CA5KR2411048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d93619887a7bd39111048284f6b0a4d9d322e2dce732a1e408accd13d4d97d7. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CA5KR2289913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6948c810fb3c3689db1e097064c05bf73af346f44b28494a0bed425e5e30df2b. 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/QZMHK2297287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90079046e34041a3384a5fa3a8e87135ee91f4338e3f843951751866ff5616d7. 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/QZS662191860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55945906cfa58d36683fbd2540dedc27bbe8fe9406d3dbac69429276385da02f. 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/CA5KR2192955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe5ba410234317c6fff96b306a1c35df62830cf53d4d81b59c9a7cb58f4d7f14. 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/QZS662189111.