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 0x568c382454eca61c3c20982d06e8e632a9a6956ad6f15d01cabf8a154777373a. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/734e9669-903d-4875-bce2-f129e99b48c8.json and https://artists.proofprofile.net/proofs/artist/734e9669-903d-4875-bce2-f129e99b48c8.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 0x811a2e95c8049b5f3fc494394132863d43d16c3401b048aea93ec6de283f1c24. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:29:55Z), 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/TCAED1976547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58a3b4cba07a205154234d0537745cbd4c851f873ab366e0d5625968df7f5d17. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCAEH1940105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a911901b6af69fc4b40fd89df0f6251ca61103b5d8589bce271eea4006b1289. 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/TCAEL1955594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28cba0f68b0acaa7ffa777eba8b0957d542bc2be5e70c7e6957d16b71e37d92e. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCAER2068673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3f24d95d6d4244dc6fe04d24307419882554a6526134df236eeeaa3e3ceff19. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:59:50Z), 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/TCAER2068674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d8ec46a3cfdcb8cac75d0b48113dac86339a978557442fd30e855cd47caa862. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/TCAER2068678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ff6efa2db2d5c6a2ef3e2ea6de64476e3805551356b711d344c4af9d93bd649. 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/TCAFP2135208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc19514701ba163735be79dff717755cfb4efa7d0019d29fa7580fe383b63c0c3. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/TCAFZ2263338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb97d00355b927845a7cd32c8d7460204eab65febde266e9b3dac0dccbc5a8b5f. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/TCAGH2253521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4a1ffbd49efca9a53f079b9f1d27302851ddf3e97aaf80ce9d37657c0679571. 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/TCAGO2207724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeea07c267ec5634ed6e0f4c6176d81331f4491d74220db6739162cb844a155ce. 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/TCAGO2207730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5b12413de8ba99413dd6a1407efb15bb2753d86585f03e6270c28bedcf4b340. 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/TCAGO2207732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1fd6f8d145458273e7b24aec950dd59fcef83ccc39063831d8b76783e535fc9. 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/TCAGO2207735.
Zone Interdite (Balenciaga Summer 24 Original Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97e4004ed304d920f74c1573c1a76c6983f882ce7294cb8dd7f16790b99ad301. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/QZTB42344039.
Crossroads (Balenciaga Fall 24 Original Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeb8b69685c8f8cef24b72d2931f8f39b4aa1d714574368273ca16b5ff8c80c8. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZWFJ2382292.
Fruitcake (Balenciaga Winter 24 Original Soundtrack)