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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 0x8d3f8300f993ac65513b20b5cf44ad104c128cf006c88ba560bc4909f2b57c07. 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/4b478d0f-e508-461a-a1ae-cb28219c7f66.json and https://artists.proofprofile.net/proofs/artist/4b478d0f-e508-461a-a1ae-cb28219c7f66.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 0xb8cecce9fd67eb5eb275cb01c015d6f3c711d10809775d7dd2d3bda0613c2610. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:21:49Z), 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/USMH92348029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2688e2d501b396214ed2cec4e12a8a202278076437ce82a22eb9eb3a45130c0. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:32:14Z), 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/USMH92348030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8d5a4d3e0d6c307ed63d59956306145fc252f0688365415a67bdc5483e9e7b9. 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/USMH92348031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c03ed6b81bf1a3e41eab6c288807dde979a2ca26d50ec2b418b6c07b36d5db2. 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/USMH92348032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58a5aed201196ae664c418aa72ce88ba08e64ba6a3198b1093c3884a5e72e394. 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/USMH92348033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4f95b5a132778ce5260f476d4c79494639558da20b17a7eeee95e08f53d4312. 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/USMH92348034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7961ae8316ae2f75dd496a8a22d7b54365e93a251ce59020cb95db6bf135cf3a. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/USMH92348035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab8c76c23933d601ad5148664ce1b9d1ec6fa04a64493733543c47e48b64dbf9. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/USHM91721863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc19f78ae00e1639dff6292d916e96de9e7196f56c05d3426c227b23a8fb336a1. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:19:00Z), 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/USHM91721864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91a48901634e118715f9a07fd090265ab8b4290fd71b0c591b646a9e293acf99. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:53:58Z), 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/USHM91721865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dadaf8c2a0bb7f5b803006386f235021121ebd1b1d1f9ae3394965e4c6bc9d9. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:00:15Z), 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/USHM91721866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ddf54b43ef128ab8167c3b728bcf4228c92e2b86579ec1bf96f08794a913cc1. 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/USHM91721867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafb10c03316b2e14fbfb593958842756684f0a46ca9e4c35b35d9dd07b831041. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/USHM91721868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17272e0bd324ba233026f046660e82133ad36447f718e0003e20f4712cb01b48. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:35:07Z), 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/USHM91721869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf208089bb83ff52ab89ecde41c564cc615bdd66d99daedffcad09b2cc9541280. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:14:56Z), 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/USHM91721870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb875ea4de977a65e81f01cc4ade677d963c3a9af0c776b780f863c5ea6f4bd08. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/USHM91721871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeb66777156b71380453c6b2bddd563724398079f5622b14b73c808b58bb8c82. 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/USHM91721872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66af1b7c4a41392b9933871f5ab50e62c5e812e04b120a1611bd3e533bdee863. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:49:35Z), 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/USL4Q2398875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3116db83b90544be5439644f7a380c7adb3f4ba213ad1bdf04fb20f9d07a890. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:28:51Z), 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/USL4Q2398876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcab11d529ec3135f022fe0a1c50b986de9a7e9c5b0fc73389898d734610b74f5. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/USL4Q2398877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf487e801b07132c47079d1eacf7cd0b39196f88a8868c00e3da6137d67519643. 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/USL4Q2398878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19dd52b83ecfbdcf24d1a49131c7fb59d2f77a19c173398570e62092b780bb22. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/USL4Q2398879.
L'ombra di un uomo che non sono stato mai
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9549775b6836d163b3f595ee394a43d836d01abc91d6b15747de53da182aa31. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:25:40Z), 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/USL4Q2398880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb22a53710d29d5097f64288bf7641964623146fece02d7473c633931238259eb. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/USL4Q2398881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8826d1160a0720188c10d8918519b1c34ccc1212e966f77f3e1e50ed85d917f8. 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/USL4Q2398882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cfb0decf56c96266189934aa4be39bea95dc6da98de7d23b0482b2b4fd8bb41. 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/USL4Q2398883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73954d5173997f1c585a4381cefaf9987d7e645f240e4e50f42c6aaea01e290f. 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/USL4Q2398884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2dd6b831379c6f8d5b75bf3410735461145ec69348c131708fccc477f84cdc7. 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/USL4Q2398885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca1c5b5db7aeb9ec444e64b9b4a366ddd01cacced9f5dec82142f3d340a4f10f. 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/USL4Q2398886.