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 0x9bc6fb51b76e089faa49214f2b272c0d3438c5447923e71db4a385483ba670cc. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/748fb650-d359-4e5f-9680-ea0865826d3c.json and https://artists.proofprofile.net/proofs/artist/748fb650-d359-4e5f-9680-ea0865826d3c.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 0x27799261a7379f007374d94f53a24254b6618a374d04cf7f6b2fea0b57f5b1a7. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/DELJ81734900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d007638a57e8d3585e69c21da2cad94e155ddf0c2d56e8a7bfafcaf97671561. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/DELJ81734903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd2ea442b780c426728109d2ea7f934ac1b37bb566c6873a9ff4c7b675048fde. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DELJ81748295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x907b0cf34baca25756d7e58d447544380a3830e7a0086d5bccdce054f787b8c1. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:56:07Z), 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/DELJ81914461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31c945fecad5ff8fd9385f06fc91b834bceaa0a749c78a4ad39132ae898cebe8. 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/DELJ81933169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd36a7359a00f288f368f39b1f20fb2f679e38aa561b75fdcec1fca90d5c8894b. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/DELJ81933173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c7f63881c70169b5591ea1cfde360a17cb23e0077325f6d005a47c96349aaf2. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DELJ81933175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62b171717aa812263e43077f1f7e54f22794bce84c30832cb63a17fe33161d40. 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/DELJ81961925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4964e3a2e113c7cd8cfb9c6c64f431e7bfb9170356d0f9043e11e64195d9bc92. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:01:30Z), 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/DELJ81961929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa4ce738a836cd67503a41e9d6a0702d5ede37bf4341d8012a470661305335ef. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:15:30Z), 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/DELJ82015848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f43575722a3dbe5b82bba56fcf5180fa1d623c0f5ce7c4801239e309ae18261. 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/DELJ81914460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd2ea442b780c426728109d2ea7f934ac1b37bb566c6873a9ff4c7b675048fde. 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/DELJ81748295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd36a7359a00f288f368f39b1f20fb2f679e38aa561b75fdcec1fca90d5c8894b. 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/DELJ81933173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d007638a57e8d3585e69c21da2cad94e155ddf0c2d56e8a7bfafcaf97671561. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T10:55:17Z), 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/DELJ81734903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x091c54850b4e51ff01207b837b53e9da51f912b24a7c58176d62d1fe5485e839. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T17:43:53Z), 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/DEZC62459440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaecc81cd57c5124a5322fea5e60532377e8fb10ca9f8fafe09617e24ce100423. 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/CH7812529086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a6539137c08555c795515fadafa339738289210413350a52692d88ebbef2f33. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/CH7812530200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b5766edcf0bca8eee6e5e8e6b83cf3cfad6d0430f6e883751e140364a0854c7. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/CH7812530654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a189e8124e3f7c6450b6f2867ee65471e4c0f0657fb95d51579770ec916b986. 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/CH7812531463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b5766edcf0bca8eee6e5e8e6b83cf3cfad6d0430f6e883751e140364a0854c7. 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/CH7812530654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb103bafd618843aebcb383adabd5079df63e6564311d09572b3e8f2ed785caba. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/CH7812532179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53880333476648220c2333011faa30bba11d79f8f50131d3c25f1f9c0bb02eb3. 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/CH7812532180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a6539137c08555c795515fadafa339738289210413350a52692d88ebbef2f33. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:28:53Z), 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/CH7812530200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83e5154bc30112e8426ba5a3b05ec58f80785c430a97a30d18a619a25d32e8d1. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:07:20Z), 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/CH7812529726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaecc81cd57c5124a5322fea5e60532377e8fb10ca9f8fafe09617e24ce100423. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/CH7812529086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a189e8124e3f7c6450b6f2867ee65471e4c0f0657fb95d51579770ec916b986. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:41:26Z), 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/CH7812531463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x464f0039cfae99b27b8a49a9fba9d69cb2b25fdbd5a8079fcf9b843e9734cff1. 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/CH7812422470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81362e8fbe9f0410e843da5e0d345b9cecd082241dcae74883a7c09df21bc523. 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/CH7812536063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4232c6bafd5858b90a3a2977ce06f55f65856f642df3129d27226b97c837e2a1. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/CH7812536067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0afb78d63fd1502f8f7f890e0d5b8b65d168e9bed085c2f03850f242bd63181e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEVY82000096.