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 0x48996edecc20a6f97d5611151713c5ad49f318517b4cfb75535c383b309bdb21. Chain 2 (Bitcoin): anchored in block 953687 (2026-06-14T20:19:15Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/68543f8d-1e16-4458-8aea-698bc4ac156f.json and https://artists.proofprofile.net/proofs/artist/68543f8d-1e16-4458-8aea-698bc4ac156f.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 0xd963a05374510cb390fd26679861a462d2837012f481aa1da32ae889716e1f1b. 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/BX3YF2000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16093ee0f2922c316f7e7f0a48268317f56fe271810fe666b19c34dbd699f70a. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/BX3YF2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81ff9dd6a6ca9696b1b0c8aa1a1eb593bbe2881404a3c8e344774678357c31c8. 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/BX3YF2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81ff9dd6a6ca9696b1b0c8aa1a1eb593bbe2881404a3c8e344774678357c31c8. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T11:09:04Z), 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/BX3YF2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6270b64999ba7353a6da017562ebabcbfa6c03c9e76148323b6a749de2e665f. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/BX3YF2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f15360f07728aa5067b18cf8d8b3e65d7be350fcbfde8ffc21f8b6651d28975. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/BX3YF2500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd47e496cd57e2f11c04cbb505c0c2364502a06a5f82039ccc3698fbcd524ffd. 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/BX3YF2500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc894892102ff81c37f24b4b971197e3177aae8b5faecf989b74c8b8e33c4b731. 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/BX3YF2500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1275d9623ce2020bd15596e21886fb1f2eb9226f099d8fb160aad7550c149806. 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/BX3YF2500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0cba9f1b29329520980d175bb26dd24b47b42ca8b5041553c9c83792fa2a580. 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/BX3YF2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60e47ed9ae1d27b8ad031b876eee6b68bdb003a9f034e051171f2481a25f84b3. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T05:01:19Z), 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/BX3YF2500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f4162bfa12328a8173763c846ab4621150e189620e1cdce6665981aa5cdcf6a. 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/BX3YF2500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa20d7cfc3f07b135ff763ba445d242b460a9d40ea488724d1348d154eed1f4f. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:08:19Z), 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/BX3YF2500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd58d6ca6dc48ac73c0a0ba6434029375525e07a0404ae0f06569d36e2bec2202. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:33:40Z), 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/BX3YF2500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81ff9dd6a6ca9696b1b0c8aa1a1eb593bbe2881404a3c8e344774678357c31c8. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:09:06Z), 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/BX3YF2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1092b60ad0d51ba186183985f465e47f6cbc864298e5657ee5f564280108561e. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/BX3YF2500012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14b5e0cf96378aa7c68c6828a44bc369d08f76db493b9b23076bb014f9c885f4. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/BX3YF2500014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7f855be32a02cf47d9a03e61b51ab44418b7528fb09f0847ddf280e26c087fb. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:09:16Z), 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/BX3YF2500015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x320b4f571fd341ed07e511fa07ddd621142878ccf60d6204352e7b462463adb7. 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/BX3YF2500016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cae218a04f7a18ce315b78679cb0548efb1c0c4d57ff6a550d8bbc21d97b63f. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/BX3YF2500017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aec376d88183e5333410cc50589bb783cae89e146dba22d1c639f9af042e243. 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/QZGLS1937338.