1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 0x3972099c9d3781e3931e7bb57966b82c6b7d8c9b984da58f5e8cc053bf8d5428. Chain 2 (Bitcoin): anchored in block 953599 (2026-06-14T06:43:55Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0cc280e8-a007-4aef-9008-e12d166f1304.json and https://artists.proofprofile.net/proofs/artist/0cc280e8-a007-4aef-9008-e12d166f1304.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 → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 0x565f9d3ce2dc58d1300d1e45d6472d2171123a93394104dc44de722176cacef6. 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/RUA3R1918916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3386fc96b12f68aef5cdf69b43c7c91bc417baca09b7a0b62be8fe446ba154a1. 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/QZMHN2037096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2f2b9248cab5f2abad8f313619dc69eeb72d8a317849acad575397d3c394cc2. 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/RUA1D2343475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94baa31b3661b4723dfb2e66b6c211c960db05fcec4a4a18fe2562e39f26671a. 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/GB8KE2300472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x816c1c071856c7d09c28de518252e0aaf81da406ec5a3da0d1dc9d82a3b7486e. 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/CA5KR0041427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa301abf019e85ae559da6cd390bc7339b1a435e27808824defcafb8106b5091b. 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/FRS182123261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf45bcb122c3ca976874d20bcd7b50dc2ecd42ba64f3b3207b7544bb5a98f5557. 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/FRX872162914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e5ef506e36645c473870c92982a1c5624c519a2d403352836f04d1d9d191f43. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/FRX872162915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58f0e54424c27b94556f95c9337c3081463ca7f0eec7b334d795d20f11ba1960. 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/AEA0D1972157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafd804dd98566c6a490a31361cbfeaddc710688ef2c23dddfaf5eaabf56e61e1. 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/GBKQU1985549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20af800f042a9443456c0166a52805a0ef3a2a701f83ed6ac1f44283d21f31cd. 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/GBKQU1985559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x238210c8ea5bba76ecdadd8e549723ba3e0d9fa27f9ba44995a3e4148506a8d7. 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/FR26V2080982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b7b1f0eee9e32e4a795365249550608671c28aed26c0d8e0130f73a3cfd392d. 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/FRX762079654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe55d4acdf2ede084a1df52d65dd0de753a33d12c8b97ac06cfad3348fa44753c. 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/FR26V2080986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31afe5818eb4a376493d3e115734733ac50ac4670b618420b262c1904732c1a7. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/FRX762052146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc66077443a8af9b2dd787cc4e28c5324047956584e70092ddf2ba69c02aeed31. 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/GB4R71800104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x791636eaf343a98b50d0d6aeba8225d9b4cae28c594742bab42c33d686b55158. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/GBKQU2075199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9ea8178e6b9344da4fd8f307a60c7ea5bf527aa5b239d381a74495c20c118a1. 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/RUAGT2584759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54c6c030ba9fa49918b34d23cd0ffa4888fa067d88e05dc4e41364b493b3a094. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/RUAGT2584760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ce1c72a63bda31d5247a78ef9084b456502c9ed3d9685a36c17522b2d11f550. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/QMDA72523284.