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 0xfb541688f90396ee4379face6ca3592c8ba7f9f8d8ff545cb9e2a5f612d4443c. 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/afece9b3-2e36-49d5-a31c-df362a7bd15b.json and https://artists.proofprofile.net/proofs/artist/afece9b3-2e36-49d5-a31c-df362a7bd15b.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 0xb21fee91906ea1f361aaf16331a4c81c57b64697e82e617ce37b308c431df3f6. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/RUA1D2361122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac5b1851136e943256fd355b90999d6900ee0a2aa8b35293d48a4ebbca11bdba. 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/RUA1D2361125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c711b7f6203b45f358d0c2f2c7b9a87683e27a87d989c8a30fcce1fe40efd53. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/RUA1D2361127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5c9fd6cd990a915482aaf8b445569a12550714f67c26a9997e0e6afec1a6b46. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/RUA1D2361129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7a841aac9a8bc14afaa7001d6a645a08362b21610fdad90d1208b2a04b02a9a. 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/RUA1D2361130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e145062e989fcc2f7ada6b2e0d3416e7bd8ca30b8ee8928bac964b53c3e4202. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/RUA1D2361131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ddb61b23864ab7d2f9ecae154bbe427238422a72f15ae972a32825679f4c9c9. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:48:31Z), 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/RUA1D2361132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd75cb0ac5f6b49f8488d29d76e6cf66262bf6279c78f3c90331141e6e3189f6d. Chain 2 (Bitcoin): anchored in block 958351 (2026-07-17T02:38:05Z), 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/RUA1D2396505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x144302828dc59790d499963a217bd9b512f2bb04438c843163e56b799bd25d6e. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/RUA1D2454520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc325f12146f834f1adf7e73f827e0351c380f19db69bf328156d9433bba4d8a8. 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/RUA1D2454521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacd427febcba33674e5e8e74cfb36db1a3109a2c34ac74bae3361cbc99e12016. 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/RUAGT2408841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6bb6935995045c18f9c35da403d7f3da469a17846973a18b2e285759fa11441. 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/RUAGT2408845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7531b8fa3c7bbf1c7163cf9acb6dc8c000bc1ee24b56df7602c9030ebb4a4208. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/RUAGT2408849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f60ac804aabb9a19233b46a5e4daa1d92c595a60c39ed80cb1cc485bdaa3129. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/RUAGT2408853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf7b30dc2591631f12b43dab9ae63fb694c8474a0f133da420d48a1ee029f29a. Chain 2 (Bitcoin): anchored in block 958498 (2026-07-18T04:54:58Z), 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/RUAGT2408855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dd8b47dc99e5e94b05c140306bc0d6ec911f16741c3d550aa2b14c2b00fb6ea. 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/RUAGT2458117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f2d70ed597680601d0578e3281fc427d9c606c874deafbf77a303c2dc4eb383. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/RUAH62419962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cf9e74abe9c2de7c351cdec749b3d3d9137073019e62e61f095953b9d7faa53. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/RUA1D2500974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0955747c6f73102b3fe5d73df2f58f34d55cc12a305d825f32e60a54d3dfaf67. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/RUA1D2575309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96f14638ce2be18b1b9fb5cdcf1000774b50b3a89f5a94d420934b04a3278010. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/RUAGT2506374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd2f1449681c99188737a24da08da8c40809a502f6564c8559227ae9caf28e1f. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/RUAGT2528825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd77efdf83893015b13a812fca94769628cebc6c9b5f56a34e609072d964a88f2. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/RUAGT2546178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd2f1449681c99188737a24da08da8c40809a502f6564c8559227ae9caf28e1f. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/RUAGT2528825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4247873b4640efa96c415d50670e45c8105cbec1499d4e2375a2b4079d179f71. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:48:38Z), 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/RUAGT2546179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f617ed0492ac658e16ea1fd3ab6912e94d50f176a201077e59fd0cdea6b859d. 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/RUAGT2521996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd426d446003cfa2256bdfed0fa290c6a7a21d4cbc174f273d2a438f09a2b2d9. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/RUAGT2546181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65c2fbd6c6b3b62a3d1eccab4a6f92f89d7c91923574b9abe6d7d760f4de1f69. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:01:58Z), 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/RUAGT2546183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f9ba702c4bc5fa9fc841feaca00d4dd6c27992683547ec8ca33733298959cfe. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/RUA1D2286192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b1e672506af5ff8b7d37a536eb2828eb0f3aa6022fe534999078c8edc3388fd. 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/RUAH62423512.