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 0xc4d19bfa24c0c27e21d8c9f4f352514e29368dfde00c0ab6cf5761863f1c8d45. 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/8b9ea9a9-e16a-48ed-90cd-43c2b47b2be9.json and https://artists.proofprofile.net/proofs/artist/8b9ea9a9-e16a-48ed-90cd-43c2b47b2be9.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 0x313cb1fc94639a0bfe7ba44f5208c2e0f069e3d09fbac2a3b5d77bf2549d5603. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:06:53Z), 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/UKFT41826357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fe699a46cf0a14099d22acf815e9547b552e49f7b9278069c51faaad4606973. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/UKFT41826536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfab73c487f14d09aab5ceee338d2c10fedd7cf0a15f57b7575d9d75d97573a66. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/IDA221004603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x879ad76d22bc74b22da947919d3ea7472afdf21e213414c14ff3c057cdb4fc29. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/IDA221004604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f76245a0d002a2962a8c30024cd4b1038e954184b4063ffc25d068b0ed1e016. 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/IDA221004605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4501d25cc6a15c2c1a580841ff3d5f7fc07eed338f11ea0d97e415642cd1b68a. 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/IDA221004606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedabbd14f4e99840e17633d0e607a7657681eb01b282c51d46875643f0a8f7a5. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/IDA221004607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f949eabf9e514d6c760f00fd039aba1648ad2bc7dbb0e8f73fc11825868ab7e. 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/IDA221004608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2f9c850d5a01f8a91e206328cd1f9f2d10684a10a22fca9b9b3d0035753f0f1. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/IDA221004610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e30859f586fc29f185749b18ffacc26510dc8a03c33cd50ffe932a4f52697be. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:20:22Z), 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/IDA221004612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d25ca3d2afb817e27c2cf394f9f9ba6ce4e87cad3fae739284ac630767c607b. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:40:14Z), 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/IDA221004613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf9e3fc73577489c2805b4ec20b5cc4acfb1f8d28209cc600391e8aa8887b7df. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/IDA221004614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71b0f6aa44d3b0b64bf4412dde411b3c7187f06047ca9d04bd80d3cb2675cdb7. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/IDA221004615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fa1c357092deae87b0799cc94d73fa3531191e1ec7e41276db4e04b96017c66. 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/IDA221007810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe01d6cc5df3058ad17bd37b3ecedd912933f83aa74ed31fc3911cf833e908404. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/IDA882340659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40888996d9bc350009fa09e2d17b09ea39af463b8d9537d3bd472fb03c335cfa. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/IDA882340660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc925ca473780c12b96b82810f2b6c2feed060f41727798dd8d85c9d03c608b7. 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/IDA182334876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7b3afa0c7eed64691e9061237307703f7111e3f92a486364f425c051263ca78. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:48:17Z), 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/IDA882025099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf40a9cef9b43777c7bd432406a063871232d11798882d094fa4441d57886fe0d. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/IDA882025100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x767d911a15d0c998075993fb17f2f1c99b92b113b59fff736490368f1192228b. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/IDA882025102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecf5b012841ac252b7dd0e27ffc38e4e3900e991512b57713bef2580d1cf5785. 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/IDA882025104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01d2130f40e9d8e45037b6cbcf82a7f1d2c20406bc787e67f06f71a0a65767ab. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:03:40Z), 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/IDA882025113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57455a9cd99c3f0c493fe1cbe60a134be391a7023b93fa30fc56290fc47b73ee. 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/IDA882025115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25842fc8c7276f34e6ddb42d6f3baf66e981adee20ee1115fc1fcce34f33c1f0. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T14:07:15Z), 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/IDA882025119.