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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5a3bc3b3a3727d59c1ab2f80da6e63f81b3f25a5c1b7fcaef04d1bcbc9f3b27. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/be41c37e-1c3b-4a36-829e-b404b1472451.json and https://artists.proofprofile.net/proofs/artist/be41c37e-1c3b-4a36-829e-b404b1472451.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x220e8ea5d2519cc647ed307f44fcd04b403999196268fb0a425962f7adc30d42. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/COSO10600115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc00dbc8860fe49d8bc5891f0cb962632db4d06f743e3bb08a688d1e5f478d60f. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T11:08:30Z), 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/COSO10600119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2923e438be93b19ae6ebe9a5734bb3d53f42e8c884844815e0bb765cd8591f7. 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/COSO10600125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e38bd59053a39cb3b4c2e306f8af289126ef77680d2d0c1f0706f731f5312fa. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T12:33:53Z), 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/COSO10800034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b15bf92b47e881e0d6ea4487648d9a0ff15c79239cbdc2adabcb61ab4f470e0. 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/COSO10800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee61cd72e433e6d2c19d5d1b5560db0d9cbff8b26706f8b29e7869a9eefe3e90. 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/COSO10800039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85b78d0f1e78b1c572fbb0fbf23d6c48d816d542909aa8cba1bcc5e100babd39. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/COC011228723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe94d103be01e26591dadd6771532891deb05c6d2ae0195cfc4545002b8bdf78c. 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/COC011228725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x553d1bf1a8cb685eb3baca3643bbc038bfe5cacb98e9217f6c1ef52a36aeeacc. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/QZGLS1955581.
Generaciones (Homenaje a Miguel Morales)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x244803918524ea354935d464655abbf0944681badf71e4760c964108905bb9f1. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZHZ62063611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x582e96950e4636087c1931bf9653746ed0bdeadc8220dc9f4d03c79af507cb9d. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T15:22:45Z), 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/QZHZ62063614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa27a4dae086bf21f3c7395d84308df74dbe662c23597a30383ad2b01885aec8a. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/QZHZ62063617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67b8f05e40fdd1669ace17c21af535e83ce0079d9a49aea69b36f64c3b9ac53e. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/QZHZ62063621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc701211da623c4f7a5259460e03abc16b7c5aeaa9228f4e2ef09c1a488db1e0c. 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/QZGLM2324447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x552ac89c027108559b3c6fc3b150c9026eb49d882ffebaeca0d18fc89c392b97. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZGLM2324451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3c6ba2a1790085aeb0b17a01a5c5d0482dc392fd415bcf8f35fd3afeb6fb5cb. 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/QZW9K2304834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e8075ac992b8c18b2484ef022bb74a89af471509d4077accccac938f5d036ad. 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/QZW9M2425228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32703ce8c6896896e93d62cb875d8f7e461b51e936058b29c251aef229c1e4d1. 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/QZW9M2425229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x667aaba5f3d18a2651ae569dc90f3b32623786c3eea1e7fd2c5fadd856b39345. 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/QZW9M2425230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3475900cdda0743361dfd74764517a9750c940cb591bbab4d6d516e388de306b. 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/QZW9M2425231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf53b4ac756836f34560174ea05496fada5b8d896c595e85a0121ec01ffd08309. 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/QZW9M2425232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17695ad94bff73c3688824742b92b4cb16473f0279e7299673245c16556e1bd6. 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/QZW9M2425233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6c69eaa2e64901cdc880d9add6e606475ff82400c2b7333436891ec2d3223af. 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/QZW9M2425234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x445fc62594d6f57f4cead35858d997b8127c521995f6bd60df50c2bea26eace3. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/COC011530565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2059f6c78b4ffd90c67b01c0d75ba2310217efb079ef86f94fe8728968be626. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZNJV2415625.