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 0xa746afc5ae402f164b8671c908c403ab21501de80ac9a954bbb6762318bdbe7f. 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/4b9a1ea9-37a3-4409-97df-33d8e77a32c3.json and https://artists.proofprofile.net/proofs/artist/4b9a1ea9-37a3-4409-97df-33d8e77a32c3.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 0x1dd617a6ffdc7d44d27027db83da4ac8cf23fc785000af402f3b2a7a319a4c14. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:43:34Z), 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/NLS761700170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8434a20aaf8c71482ef1902eb77823689a516aebb7b98d363598084469ce5ca. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/NLS761700268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x229132d8db0b7e3c907535d6c6f3e95deb17e46c93683f1700360b6080a113f3. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/NLS761700357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bf3ae00f266a00a7b3e272e8f84078ec6098331a750b13f621a21355cef33a3. 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/NLS761700447.
Edge Of Existence (Official Reverze 2019 Anthem)
Step Into The Game (Official Intents Festival 2020 Anthem)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f35e4770da9b49f4a5d7463eba76a1d896eae4c18d67756707ff380ede9e9f3. 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/NLS762100199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb23dad7efd404717b733f9d6b343fa3e8a0c5f3442b30999f30f3322ea7e5b54. 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/NLS762300918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3d780ed9072e42fa722aaf4fca5f2302e4e23127b34c2892a067a023897a606. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NLS762300962.
Gangsters Of The Universe (Midnight Mafia 2024 Anthem)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x982de19e1f39ff1be578984a408137097ae9ad0a48de95cd4ae335e21e2d998b. 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/NLS762400198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9d1b2994955e6f761b36e367b21d1fceae9f4024290b8ad1b41949ae23a954a. 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/NLS762300746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f2582755a0940a9aaadb49460a9de67162717b8a9cc302879952fa0679db2bd. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/NLS761800068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9a30091120257a0868e312d7aaa66ba1aa5e3f989f421fbbb09a82488aa831c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/NLS762400431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6b832149a317d4e4ee6415df9e90ec7dbe5aca3c149358edf7ac7ffc793db80. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/NLH2L1900016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03c155095abe12f32452c00fd1a5fcc86ab5045cedd8af714e54685448c912b9. 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/NLS762400104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc61dbc995f18cedf8e0254deaf230a7f30df5ea30381ca79d47cb31e57ecf4cc. 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/BEB681900080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x672703ee5bcf845e22a6933d0ddd81842cce0eb486cb665a93424f48d97a4620. 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/BEB681900132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f2582755a0940a9aaadb49460a9de67162717b8a9cc302879952fa0679db2bd. 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/NLS761800068.