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 0x0b42795a52a3c974ce36c080c4834b289ea3a1ae7dbcbabaa229ecf581288bd3. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e583e188-7015-4e73-bc48-7049ff328e57.json and https://artists.proofprofile.net/proofs/artist/e583e188-7015-4e73-bc48-7049ff328e57.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 0x8a50986dc8a2100bc74fc2c209676b98d0ddea88b379b6e79682e98176a11a57. 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/GBSD61200017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb557a607adb933f78f7775258296332d7dda9f82e06ff71b3ddf5293a2fa6ea6. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:40:35Z), 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/GBSD61200018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5be646e109effc02985c6d9ac89cba0f984beaa8bf462364e6cc7f2fb02750c. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/GBSD61200020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc674970118c4632971917fdc23b3d2c3601aefc86e6b38096791e36b82c63f2c. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/GBSD61200021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bb3f899c44e19d5b2fcbf5189ebf983696b6040c25b3a6a63876c74362d2a48. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/GBSD61200024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4b8fddac05d313d3558bea73b97aa3ccc4fa009167463edf0286a7b474360a8. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/GBSD61200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x614effffa501e6838ca44a22b3de0466b0501b862a9c3a33a8dae6a8464180f7. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/GBSD61200015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a50986dc8a2100bc74fc2c209676b98d0ddea88b379b6e79682e98176a11a57. 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/GBSD61200017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7feaa371fda983d14f5b1d71e8bf400c8825b34ea786792dc1dac65a0d2bb17c. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/GBSD61200019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc674970118c4632971917fdc23b3d2c3601aefc86e6b38096791e36b82c63f2c. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/GBSD61200021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6412f73815880436caf30d7214b538c1a9c20e18334c5f813d2599ae406b604d. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:07:40Z), 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/GBSD61200022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bb3f899c44e19d5b2fcbf5189ebf983696b6040c25b3a6a63876c74362d2a48. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GBSD61200024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb74878461400c65a39c86c4d6efa264d42cbfab236b3bd40e529d63459173f3. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/GBSD61700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cc81b198e14b19989ec99d8b0746b3110c9ff356fe59251c5152dab48e57740. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/GBSD61700008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb74878461400c65a39c86c4d6efa264d42cbfab236b3bd40e529d63459173f3. 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/GBSD61700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bac42e771a7e73fd5c7f0a71c3f879049ead0f40353d8388751f94d96a07f7e. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T19:00:17Z), 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/FRX202162069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59652d863175e10907d1065b58a0f1cddcb65a016bef41e01b6059ddc5589b66. 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/FRX872206928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc189127152f785c49507ac3309e285549b19850fd3550c9e2db56163c3e1024. 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/ES5152400430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b843b4f1737cbb09b2950fcf65a211c72b99829277edfc410fd32973958a4d7. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/ES5152400431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3e616eb39a515d019e6ea14eb89a6d8658dd678cc8c5afc78c05dd55a1e01de. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/ES5152400433.