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 0x1d72d9611c1c41822f0836efff558a4c15ded41eca3422cbd9ffc17f7f515d57. 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/bfdad522-fdf3-4a48-876e-9ed643492e32.json and https://artists.proofprofile.net/proofs/artist/bfdad522-fdf3-4a48-876e-9ed643492e32.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 0x90cc3bf34dd374384352b6a0b614e8b13d544ea8ad8c2806b9d46d5c70e1beef. 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/GBLMR1500101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd96b52774e98ca4a2a640f987fccc25e58f7e936e19e4c68a90a8af6fcb74f59. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBLMR1500102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94f6a0dc268e5632f70306535c90995b8a387bdfef3dd4576730ce709fd06eb1. 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/GBLMR1500103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8406c70cc66b95bae676ebcb3870dd13775323ee8f271b274e6a6dfc585723d. 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/GBLMR1500104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7ecd2e679e878782d390a4da02fd7677e5875ac9ea6ce03c5c7c9c5c3463d5b. 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/GBLMR1500105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f0c9ad8de64e6f8820c7f4d4b6eb060558a31c3f97ddfc75a5e0ad2619e0228. 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/GBLMR1500106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x717477c3b74068b6760b61185e8db78d498cfa64a848f43350fc7e148a09c4cd. 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/USA370919997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda6a404dcfd9842cb45f06c94cdff769944f0d5d77c7385e5a3771635b88c1cb. 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/USA370919998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02f05ac8b0c8174a4d2b2c5674034ea622b184e6b5e42c77227928ba1ba84003. 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/USA370919999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26dfe15578a8058c0f8304ade48327d63d4b1794ad7d42f09f2a2e2a6517738f. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USA370920002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe54e84a21d0e3b4619f0000fdcf86e15615484d405b725e1122bfe7f3be793d5. 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/USA370920004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48144f324ec6aec48357690d94725b954c66f4bda5095adc9b66b2e4cfcd312d. 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/USA370920005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7d8f1fae7acd1096d7304a1b17b2e323746cc0dc9c31dfb29ddcc26948eab14. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/USA370920013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7168d46b08ff43fb87d65363c8e734e0ca28c9c00467c11f86c55c7a979a127. 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/USA370920016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f2e2cd7c5a349a9ecfe2303d7a138eb319f95e84aaa037c8ad371e1d1967c80. 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/USA370920008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03c914c2dfdcb6265e29dda3b96747144f7f832dc29c42b5fa16d501184ce935. 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/USA370920011.