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 0x5e798c9f953b32a9a82fca5c0d79a1de3e6de2c95b1886dea294deb5b51432af. Chain 2 (Bitcoin): anchored in block 953684 (2026-06-14T19:51:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/656a28ed-47a5-48c3-b2c9-f489e873741b.json and https://artists.proofprofile.net/proofs/artist/656a28ed-47a5-48c3-b2c9-f489e873741b.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 0xf96adecf7aa73225297eef212968cdd6c1034654a130b06d49c9b3a7ff9a08df. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T08:06:40Z), 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/DENA52310912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72a48887fb1f7d547bd8f31b39f5cb241f63708f3282ce9b8c6ef9ee90fe1304. 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/DENA52310946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9fa5b5999e6b273ae34ec99cce05a2f32ea9ec2796e33a8042c245d2681c14e. 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/DENA52310927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaadbc8692c52cfb1e4073e246ad7ff9c07be921f1b57308356e83cc8e513ad43. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:51:46Z), 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/DENA52411690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0199113249a8b47a6a52be1f9c790df9383bc4df60c5571fe51110523b0808a0. 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/DENA52412067.
Green Yellow Yellow (Rafael Anton Irisarri Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8fc26920e2bd70829eb3518a1a999c26b1937f84494f4062d01ad782b4128d4. 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/DENA52411995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbde1a602d77218df5a7292ee7789432171a7be6f2371bf4f035c29dcc9d3052. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:45:32Z), 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/DENA52412253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72a48887fb1f7d547bd8f31b39f5cb241f63708f3282ce9b8c6ef9ee90fe1304. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:38:52Z), 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/DENA52310946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2b884b4f4fb00b88ec67b602c4debc3c70f1d3ccb8fbc3532b00bfbeb0dd716. 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/DENA52411994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc087e1eb7071d61dc4423b0dbaaebf2595ac7fcc02293d90c34f2e431c154360. 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/DENA52310947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8fc26920e2bd70829eb3518a1a999c26b1937f84494f4062d01ad782b4128d4. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/DENA52411995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf96adecf7aa73225297eef212968cdd6c1034654a130b06d49c9b3a7ff9a08df. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/DENA52310912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0928fc574d0a31a8022d57fb1f3cf7924325db17cc563a2940200e967487789a. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:29:28Z), 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/DENA52310926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9fa5b5999e6b273ae34ec99cce05a2f32ea9ec2796e33a8042c245d2681c14e. 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/DENA52310927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67ad8a719fb4f4f124fc8fdbdaa63d0c4b5cf63a68d72b475df5cf3266565070. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:21:01Z), 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/DENA52411996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbde1a602d77218df5a7292ee7789432171a7be6f2371bf4f035c29dcc9d3052. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:35:53Z), 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/DENA52412253.