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 0xaefcc78517d132549c8f50b613acecc1c9cac9443caadec9956bfacd8df5d734. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/24c9aec5-2a23-4765-be39-2e4abaffab34.json and https://artists.proofprofile.net/proofs/artist/24c9aec5-2a23-4765-be39-2e4abaffab34.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 0xd57eb7f8a9c9d56915dd2e313530843299fa58a325c215d9f5d091e2b7015c31. 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/QZZ432301261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4382da3667629715420b0fcf3c2a80ffe6b2759b5acb3d3d5d05a648a6b1d898. 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/QZZ432301311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8b394e5e5aa6915080b3c5a2a9014aad7d2a73d238ef771405f20c266049764. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:08:02Z), 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/QZZ432301389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd818b203f0013723c4cc333d6cda760894970b85f525ce1193d9322b723271d8. Chain 2 (Bitcoin): anchored in block 957961 (2026-07-14T05:58:47Z), 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/QZZ432301575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb3fcead5acf90ffc57931ac974d6fd3a5f4618164d65a94155f3e3a839b3b6c. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:12:19Z), 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/QZZ432301595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64e47b60f91208913c43545005e0604d02b34b958f6379d149ba9779a31a5e31. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZZ432301514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d90e62b51d7aaa821d5a9b3a59e586e82b002b9e17ccca6481cd1611e758ee7. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZZ432301716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bca9633ae3f5c81dbc3ada09bcf5d4c4478a0881bdb8780cb3ed7191e73e1a6. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/AUGBT2469771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4995ba866ad2232a63ad3cd83e87ccffb4fb0edad0ae24c676f7a6a0566ea7f. 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/AUGBT2461183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca2b12b2792af7fe380636e7b23eeb2ee7a91a8dbe7b5a3bbe3644342866c3de. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:08:41Z), 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/AUGBT2461179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f3274703171e0ec6e5d8f60ec330e2720ac4f1bd7d07ec84b089e03baaada81. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZNWZ2404794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe84f276bdc47ae5892b199c0173c968556ecc6d61ab85ccdea153a822c9ad21d. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZZ662471138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4996a36571fdd126697f3cc98b5f22c8e321cdf40f9033c96c4483decb0d2bb. 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/ING212463255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x678650c3f137e230f931bf37acc22405b6f12c38a16dcea6e8e48e7ee89c9085. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/ING212465041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9df85979eb95e1e5234141e945a75efd0905b450ec759fab81e77536cdb25dbc. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/MXA3V2432784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8b394e5e5aa6915080b3c5a2a9014aad7d2a73d238ef771405f20c266049764. 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/QZZ432301389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f1e5227cdb7f5d965191f49ac10783b93989dbfeae84fefb31324af50f78bcf. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/QZZ432301391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb3fcead5acf90ffc57931ac974d6fd3a5f4618164d65a94155f3e3a839b3b6c. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:47:32Z), 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/QZZ432301595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64e47b60f91208913c43545005e0604d02b34b958f6379d149ba9779a31a5e31. Chain 2 (Bitcoin): anchored in block 958861 (2026-07-20T10:02:52Z), 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/QZZ432301514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4382da3667629715420b0fcf3c2a80ffe6b2759b5acb3d3d5d05a648a6b1d898. 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/QZZ432301311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd818b203f0013723c4cc333d6cda760894970b85f525ce1193d9322b723271d8. 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/QZZ432301575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe680f1f260b0d084d11d2fa38fb8313f59e18e29c3358293c416c865fbe223b7. 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/MXA3V2439485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56559f646646453ffa188c51d5e2bec6e3a98f7f5804d952c0051798cae03f9a. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:08:44Z), 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/QZZ8B2519427.