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 0x6e211092ae92306429cfbee367246ea0dce35006d00f52ce094514b660991077. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5bbedffe-c330-4bd5-b8b9-c13aaa420776.json and https://artists.proofprofile.net/proofs/artist/5bbedffe-c330-4bd5-b8b9-c13aaa420776.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 0xdcc587eca9ca04ca82488f6aae81d9ea21368c8d02e365493cd16791b65f3456. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/QZZ7W2599766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05287ee70ff6fb76260234691b0a3f89cf5758797ab23b75f6c361f2242dd28a. 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/QT3EZ2591706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x278b99f47ae2bb778b69453909a6f7d2bb46f7fdba6bbdd8b0873dc2849852b2. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/QT3FA2569874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5848069f133f2f6b7d959a05708a1836f0a12bffc5a760890a324b0c24e07f12. 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/QT3FA2569878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85a43d83b80bb04f95d3d07becd98de9420146e344ce0bf1e764329d03daa6e9. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QT3FA2569854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3edbb4fe9ec695df295afd8087bc3e416ecc7a60b06ac107109244a7a53004f. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:52:09Z), 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/QT3FA2569840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c724e23f1ac2583f5e66977e4ec820413d1eb03719687673b5ff6cceb6c7de2. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QT3FE2562513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe011cbe04fa265b389771f1b56cabce170c4516db6977f3358e3b336f586986e. 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/QT3FE2569973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dd7d0b44538d8fdcc457390ad16af7affec7dc9fdfe6695b7b4b928fe69bbf1. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QT3FE2592211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1994ad6fb292ecc85337fda7023ed6091af142260825366ffc694a36719956be. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T23:03:21Z), 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/QT3FE2554544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b590229b8960a8d1338c527cad280843b85c9861d743e707615a569eaef9f7e. 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/QT3FE2586078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75b7d6ab0099d7b1adcc8efc4dad198ed7053a577baf743de9e916c3d989a22f. 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/QT3FG2584308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18207ce22e849de2780f57c6c647586c2104298e0fad19b53ca6042e1e159a45. 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/QT3FF2590888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe65176a1d9affa1e8c197cd6cf92b6e1a827d321d8922b0e3222bbc9af93fb64. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:15:29Z), 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/QT3FF2599553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7987ed1c0363f96cf4beb0a5dc37fb24207209e11d81b69660609d10daec05bf. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QT6E52546886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x390f4fe443deafd6fbac1db686d92b24ce8c8982f6ef98201b1271f020cfaf21. 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/QT6E52543994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9586d68f87d473e528f3c787b3ad6a487b114dbfdd33dadc3c64a747ae09447d. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QT6E52541945.