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 0x7ddf35bf223883e5dc7de9c109e1e27bec64872ff661403843a73cd73f276c89. Chain 2 (Bitcoin): anchored in block 953717 (2026-06-15T01:05:33Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/87be8f8f-1c0c-4046-8e5e-1741733748ba.json and https://artists.proofprofile.net/proofs/artist/87be8f8f-1c0c-4046-8e5e-1741733748ba.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 0x680559ebc19cce3b2aa61516ef0e612c20bbd4565be6561f33c5a3c916a7fda9. 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/DKADG2200135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2956119c4e79f7765b4e51910f6119dff2581929d17549781def32dc402750a7. 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/DKADG2200367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8578a0507a8c9481b51772c4eb403429da54f9fd54dadb04cc2775e6ea06e486. 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/DKADG2200371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfef54b1f06caae1c44cd064245048ff584badc635cdd1d8908ce33f3e0f05427. 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/DKADG2200128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e2a2b11226aae7faa892614143e27b83384247f3dd9d8ffe29d947b1201bdac. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/DKADG2100835.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3775bda174ba08d484c2725b1fc71ad63f6040e5e62712b7e1635c08cc35172c. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/DKADG2200368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e1b6330801835560ca79e7b7f36ef95c739ea671b196f301798621decb86576. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/DKADG2200369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f929b8096d3c8e06732eacd088774c49fd4505113c8c46e220d60cbaf13c86a. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/DKADG2200370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6685a5daf849dadf410bdfcb332f5adcf110b8c3faf0909697158aec06f39e0b. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/DKADG2200129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d07089554fb4ad034650f152d05d66641f4a3978a175517f3af3a62376b264b. 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/DKADG2000298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbf36b103ae51aa2937f61cbaf3c71a27ecccd7b20df9399184d8c3b38502e77. 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/DKADG2000299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dd3335277beb57ba7c42bef609d748aae208603c727d78cfa16d6e912e6f6b4. 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/DKADG2000304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1be961c6c681d10e6d7d54d549f71055a62e66086554a019d60d8fd3091c0fa7. 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/DKADG2000307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38cc4cb5e76dae8c8f6a8095a5d364fc4ffcb80655c5128cedc4f081920655ce. 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/DKADG2000154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ecdbef4a9d64ceecb70936c5b11060daa570a0d395fc1a9024b3aca3ba45193. 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/DKADG2000159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x395a7b75f86837484a4e3da684fa3b105f5c3de41823c949a5e173c1c6c840f7. 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/DKADG2000161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2afb69283b18c01c349b015249433ddb8c7436893d5228377485a06ac313a661. 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/DKADG2000163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d01896a177a4d1218d271fc3088e0dc4c9cffb5b223d4324e4fb29a8274c67c. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/DKADG2000300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bc33b13219f52394e7175f4a82b2c6798a79342dee21be71d7697b31db39a07. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/DKADG2000301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a4901b7ee09d911d21d5129f245a560265fb686eca9bf6945493e064c0deaa6. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/DKADG2000302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e5d2e263bdd102fc65961129c378523aca552f75c50104aca3ff6618a716454. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/DKADG2000306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2edfa442aee5e4ff0b03cca24248b0b3ec0885784ba2983b89367740321b849c. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/DKADG2000155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x234d47762a94b871ae2eaedda3c2beb5de752dd76c47e88a0731a78d94405d44. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/DKADG2000156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4439a9c62725b0d26630a02df88023b678478f5081f9a7c5641627d974e4c00f. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/DKADG2000157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29849d74e2bdcce9cd636ded1f0b4b81d4f386c9d27afeba5986b30f0e2e4b5a. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/DKADG2000158.
Journey of the Whitespotted Jellyfish - Nature Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca6ec146c78e0f92f0ad9d58df13ffb421d23c382a69f5f35329fa1c16b801b9. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/DKADG2000160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x914be7e1d651193deffd52444746bc21891c3603b47352db44e15644856d5ec5. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/DKADG2000162.