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 0x6684927dba8881f2690828d0b55107825aa8b824072c1f4873ff4a2f66146c9c. 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/944e18b5-ea99-4e8b-b6c5-ec6e7e725d83.json and https://artists.proofprofile.net/proofs/artist/944e18b5-ea99-4e8b-b6c5-ec6e7e725d83.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 0x4337f6a24af2dba4c9f3dad3701afd06590a8a614671e431721872c734dff8d0. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/DEE860901973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1ce7eb259f1c490808530b223e7ba2c64839b4f3647fd47b66bb788bb2bdefe. 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/DEE860901974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e81936017a195c24ec28f758398b01f551342e2a31870adf7293bdfebc5e03a. 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/DEE860901976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x434620c5a0590afc32d3560eeb74b8f3339150bc9209d950044ff31482f99346. 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/DEE860901979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x104e8b6e4c2df70d182680a896521de9a8cf1092357f874f3ef1a6e5e8443f6d. 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/DEE860901980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf19c1431bc1a6914ba7fee712b9e2f51ba8cfa386ce2e6f5524d8a6e44aeaf9f. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/DEE860901981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11297f71ba38daf70298b1ac2efb779efc70a02648aaee6f2e6b2ebdf07bbf4b. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/DEE860901982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea81fd3623c03ff6d04c02754dd7724c936e614899330b5dadc8e0a6be85566b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEQS91801134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eb35b27b93eb5709bf4bcc2dbcf3315107b299e096ff246860718129491b84d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEQS91801139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bda2da0ec6c59d96b677e7be18dfd24343cd48704839468d201ea54b734c10c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEQS91801140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2021cfe1f851f497cea1a409fc99f6d997f19ea27d0cb871c7276f2f3bf0d6e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEQS91801141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6c77e041212b0c44eab3877a9a85695e70e8426c13820e334dbe32a9d730d1f. 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/DEQS91801142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf70214b7464da030c8bfc82a88eeca7dbc7c413e90a17fbe3929b796e63b2e7. 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/DEQS91801143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddebdcd85250b797339a36312cd565934585eaa3fcaa0acf4332711b68184b57. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/DEQS91801253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9eb3a1261d733040c21fbcd8b685cba67adf53793b8658b68be1a2f0307cc9c. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DEQS91801145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d7b568651e45e873c7474adec8b5eaae3d8ecffd27f6f2ed50313e0a7d3495c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEQS91801146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1474d51058914db75aa03796e0a778d3da602f8098178ded1a13379f79353bca. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:02:49Z), 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/DEQS91801147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa92179514b0a67ee1d24c9b3c2765d3af4d5d94ef0f62237c42a09bf79c04d2. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/DEQS91801148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7834d053352db5220c4c6ced65f62804ce7aceb31d81363963f32a860381d33c. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:16:21Z), 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/DEQS91801149.