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 0x1a178ca94e1ace469fac782d3cb5fc7b101c0b8ba9601ea2f7197e5cc085ed8c. 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/caabca1e-035a-45e9-a930-88e50bac71f9.json and https://artists.proofprofile.net/proofs/artist/caabca1e-035a-45e9-a930-88e50bac71f9.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 0x0c0af2b8261e55ba28e70fd3280e1ebdad677ce71c204a108d97e3002ff57263. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:14:56Z), 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/TCAJF2528035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53414f1e72157b0542752db401fb651169692c2dd94b381c60c3f33577bcff18. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCAJF2528039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d7c25d1ade25956270e46081ec8c7a2377078d7ddaf8a2cc9a72f390cb0c390. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/TCAJF2528043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x514402b86d793efb7f9c2860fa6e8cd1a6c5251ef6838fe8ee1c47ab2bb9058b. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/TCAJF2528052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f93b12cd527ec07eca50473e5fc8e55258eb484cc19a66bfecb3d1f34c7c761. 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/TCAJF2528061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa84ca00233acf23c8eb74639348d527aad7730a1aa0394310fcf373fbd31667c. 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/TCAJF2528070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78e0caa7effcde566a75d1aa8b99cda317b8ba4698b1d2c794f94e78990aba4a. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:58:35Z), 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/TCAJF2528076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48b056f205f96c3381ad365889721686c0d792ac3c2779b9399a78d566723ba1. 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/TCAJF2528080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce3e445d7bf5c1732f9b117aea482702c0b1815fe1aaebf88b615b969226acfd. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T19:03:39Z), 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/TCAJF2528090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb027d82283dcc5f6ec5e7abc91f96c0b93fecc66a32f9619c5b57251aa9002e5. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:51:58Z), 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/TCAJF2528096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf6333527cf4f079e9e180610e5238b7a9b65b74b141350bbc36df7e1d1fbd57. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T05:46:54Z), 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/TCAJF2528100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3855882094c277f11fe6ef58658ac3a97d85a3143bd3d9f2028c86552142fc8. 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/TCAJF2528108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7a9c68d55126e2c1e784544acbed77fe90389540f23458bd3f148bab190ad02. 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/TCAJF2528115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce6b30f90fb8d7bd5133791d3e4d65b1cf29fa98075ae356f77d1e9fe8ef757f. 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/TCAJH2531888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78e738906cd015f8e437cee7aa224a6eada007b929f4b9dec94f3f42d31746c9. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/TCAJH2531890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89df8f5d8db94b0eb7240392dfc3fc783cef89b80399b618db9740c2f08ca967. 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/TCAJH2531896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd559e0c53bdfdc801ae7fa159014a51728182ceb488ec125bef8be31dc22fba0. 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/TCAJH2531900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67327e8d2706e28b23692a8ffac42dbea6e2656e38e5df51ec1358ce6436dddd. 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/TCAJH2531903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedee2d8756583e0510b154f429f07c3f6b0b84fcfb7a1e005d60a45b28bda05f. 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/TCAJH2531904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b0f7dde42c744e26eea7f1b8ef91a56f0247e18c94dad437765d44ef04228b4. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/TCAJI2531908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1dc53700a1d183536d0c2b8f3e2f5551059e0b837217ead724d4fbb6659c125. 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/TCAJH2531911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a63aeecb352dc725860a8b1f6dd749439a4462ef968175dabf6c7ff0d955174. 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/TCAJH2531915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fd8f95254b6b95d0b7c9756a6c6f95ca2c9f9b193d9c966a535713178717c7d. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/TCAJH2531918.