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 0xbac9c8544267504b9a175a0cb6c2964f3ca4cfed2f4b051a67c34116ff386212. 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/f74b3760-8639-4d73-8670-376c09330cb7.json and https://artists.proofprofile.net/proofs/artist/f74b3760-8639-4d73-8670-376c09330cb7.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 0x512026a305cd63628909c5cc49e5f4a8339bcc627addb3d36166eaa2464c8d5d. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/FRX202280094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2064f52a599e632d065b897872aa807549631c9f0d593e36b8ff489fcd9902eb. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/FRX762293638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7b5eefcdfaae4d5710601fbd36ae922fd1a37dcba0ed2c2264043c569683e38. 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/DGA062336130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc9cbe6c01f6324da31173d40dae69753ed0c172f60f7d9afaae8f057ce2b057. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/FRX452326956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50f4f20ca722ba2837f0a33bb6400b8108a6463b0b55d033276d1881e0ba9179. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/FR10S2466587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae8a8de56df700a4ee5af07c13397f18ec2b0719f9f1831c92b20e516b0f3088. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QMDA72493958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48bbdc1ba6f8daba394d022b46f4a43abfd5602bf857ffcd533bad2756840246. 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/QMFME2465564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b8700ce124ed404d9fc522942b54c91d02595f3f29e8728e1af518de2d057ec. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/QMFME2465542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ceccd53f17ef54a075b7c8d60e50821472a29d8dd8f50e1af2ba081058776f3. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:46:04Z), 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/QMBZ92431230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc962e527ad18f2347ce6a085353bf4949c94cda378304dacc1fc992239474937. 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/QM6P42431052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeea5c8c436590ef25d3ac68f133189ef6a1cece2c30c84b7148c551e1cffc16e. 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/QM4TW2526885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae8a8de56df700a4ee5af07c13397f18ec2b0719f9f1831c92b20e516b0f3088. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/QMDA72493958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56e8ab5a86b4dc514613ead88e85ef1f6c9a83876a2e30e3df9d558128f6aaf5. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QM4TX2511066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x778569667117b72ce302711c530d8391e8e84b8fb8e85aa581a4b070eb0dfde0. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QM4TX2510979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48bbdc1ba6f8daba394d022b46f4a43abfd5602bf857ffcd533bad2756840246. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QMFME2465564.