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 0x86bbdc5496688d7ea1a68f998108592a2a54919b16172476524b3cf26c3a38f2. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6fc0f88e-b1ad-4c97-aec6-8d1a5fc0deb6.json and https://artists.proofprofile.net/proofs/artist/6fc0f88e-b1ad-4c97-aec6-8d1a5fc0deb6.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 0x0c2eeb5ac62c9a0ae972262fc24b3a274e7582e057875d9cad61e3a431bd14ee. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZ5FN2011142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1b2286737ded13618a9ea847c3522f7ab568b3126de60a5161b61f42811d97c. 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/QZ5FN2011147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x630c84da1993cf7fa21db159056e6496e29aec9e2bb928d4661d5ad2779c181b. 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/BEN582400268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3642bab617da7f71f4781266c335707cf5b8dd0f125554a35beac2521dafd4f4. 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/FR6V82026150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ab182a1e340e22a941152918484dfb32ecd37444c7c9b7bf245bdb969578036. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DEY472472484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6be5a54564e712b995243876e0cdc364ec007fcf416409c5962cdf5762e5e22. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEY472472485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1996d0abc77b2b6a5811b4f692d9f94ca3fd6d9ad949dcd4d0d5cc1822043ea7. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEY472472486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49f187894e553b88cfd0b023f8a1ff96405438a11949f02399dcfed54a45e098. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEU672400126.
Where Does It All Begin? - Alex Niggemann Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47a6c5cf30c22d149652b55dcf1823b1063093306332235434ab5fd2150fe00a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEU672400127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c6fe80a068bc3613f67d54df9fa0ed8d5ee3e7bc5705522bcb541c3a92a3ef0. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEU672400128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73a456cec558a2b4a5b89863f0deb56b71b66d7f799d6cbb0b660487b02c8a6d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEU672400129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28d8b8d9402a0a9e639440b3db19653a468d05f74f4a036d48bfb6dbe498a702. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEU672301096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11539eb5e141c8e097797bf45c2818701abc248ee974a7d0d0b4a398ac3039f1. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEU672300504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13aba74081a51f83036aafcd5e5d03780ba8a071d2c302e5f4a2654169dae903. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEU672300507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0183530a982db6119bf6477a67c4cbaaa3af4f8ff318d907c707be4f8d4a9781. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEU672300508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08e19a94e76efacadce711c813932d19b80096187bc093e789cba9df2d5a382c. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/SE5XG2443087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d63ca1cf2828d56427953b338ae3420d7a9d45c27d34180ba9b24e9a512f018. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/SE5XG2443089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cdb28a7b0cefb44203c2b098e68464cef9fd6f5862c20dd1b322f2163b315f9. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/SE5XG2443090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5577b0082eecb6bbf2cf09731dd006e8a4a02576037e685729b1a1974c4e50b6. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEY472178510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb27bdbffa203174a70971b8d7db08feac592429f03381995383b57b16fafd191. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEU672100919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6330ada7ba835e49bdffb4951915c29cd497ec73c89adc39644ac4e360e7a34c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEU672002298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52d2cad46073ddecb0418c2742a298c16e8956e422c9a3b46bccb6b008f14d89. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DEU672002299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7950c413224dd2af9cdd3ad9d86abe781e024b18192b48d6514e3334da10e5ea. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEU672002300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x630c84da1993cf7fa21db159056e6496e29aec9e2bb928d4661d5ad2779c181b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BEN582400268.