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 0x584bf4b5c39fed8dad239acf9b16819764098c9191bb0522bb8c9eef35ee1307. 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/8ffe9071-8814-471d-a744-d6a2f1829abb.json and https://artists.proofprofile.net/proofs/artist/8ffe9071-8814-471d-a744-d6a2f1829abb.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 0x27100772ca98c5df79f2619bde559f489cfe5e46c6a68300b6574d3c54acd078. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCAEN1958540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d3ac9f837e4c68cf5b877e3add78ec1b14deac0237b0b85b3a50d7ca40d73f3. 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/TCAEN1958553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e2ef09a6a4731ce1142d89e1184acf61189f0a63999ef1da6ecfb03f564e352. 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/TCAEN1958564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffbbbb2392b52087f1c49da91b7e7be5e01304511fe845e7139afd3ffc34773a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCAEN1958572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x802b371b5a87a968b812132311e0ac6fac901a54bb1b2dbec0a6e4557d04eabf. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCAEN1958582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb24c7f18bf8e0ab2245432279a06cccd1bfac28ff386cb14231fadcb64202251. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCAEN1958590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x792650568ec3950bf37be5e612463c8d362dd35acbd1b57cb129c0258f10536b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCAEN1958605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b4c87d1e9740c4fd160c004bcddf16404491fcf031a7d3ac7a213ea7f72f024. 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/TCAEN1958610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf275735a271597d7b7d957e5a28eba69dbeb30ec1ca59b1bebab89c60b581943. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCAEN1958622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6f33e53a5d8ba1136ae550d14bbb7a973b0c7e32aa8255f0ac5e2383c5c6eff. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/VG0120000165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43fdf6997c65eee2a35e72b52c79e9d9a70c899c1856ce897204122bc79804cb. 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/VG0120000137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf88d059195e865dba200b705d606c92b92a0f6384f0f18618b109ceb5edad00. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/VG0120000127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa34a221cfc19327575b6034f9c58fa93cc500b21101e207f5dd39f177f05ba2d. 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/VG0120000118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41639191e45fea3eb77ab50cac55e17be45321ce093034c36d46b578791e5c9e. 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/VG0120000098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7014b8d911ad574c1ae19c148c8f516043d205b25e45e72aaab7501fd4034d19. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/VG0120000013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x643c308113984c734a16bb29f47bf43644e50e891091010842a1292f0de0e5b0. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/VG0120000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05a7f0c317760244bc0b0f03770e35462123078ad721a71340dddfe348546002. 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/VG0120000011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92f76f4536d75072ef480833cbc050d2c33be35f3576bb57161177a5a57d936e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/VG0120000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcae7bb9207502cc7e4ad0af45a33d9dcc5d3641f46adef5e46e048528123b8e. 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/VG0120000066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38138faab7fa90353b59186776b0885366c04d3018a7e74cbb1da40d0c64c799. 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/VG0120000068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64bd562d2a66477ee2bdd538d55453ebbd70f02f11c9cd2c02b0b6fcede5e6e1. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/VG0120000071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10002371c869e78f429d242d7846ba723fb96e575aea74b0c29d23aa1bf1ceec. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/VG0120000124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72a52a849fb50b515d89520e93dee7637988b7beb2529f48a81d0147824d0478. 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/VG0120000138.