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 0xda22ab2d1defb76599f19a0096d378aafa592a9b57ed77f34ae7af6e135b55cf. 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/6448c830-135a-4524-81d7-3947302dc9d0.json and https://artists.proofprofile.net/proofs/artist/6448c830-135a-4524-81d7-3947302dc9d0.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 0x1eb47b4f28e50b844695f557d816ac7a75357f5f302176dc85f97b684b0316cb. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/TCADY1899735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe7ead4bd1caeec56d96f42aff25aadd07c3d8ea0772c8a1c82f07f82ebe976c. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/TCAEF1975429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9e5ff91cdfe581eddbfc3ddac5774b2f3ccce83b9a5529d440fa838c93d8bcf. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:54:54Z), 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/TCAEF1975437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c9738835ac1369302abb44519488fe4ec9dde68d475b8aea804547e79b62ec2. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:01:35Z), 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/TCAEF1975440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c6c391af74e071625008de6223b1a4a84f0b8e01a3581fcfd53cf83afd320b6. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/TCAEQ2023117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1865d03e55d173a7d230e5752cbda08d78ec1672ba1c51edaf0ee9480cd27648. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/TCAFY2132781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f386021b5ae45b54122139508a50d739b516e9d9c3822acf6e7c12fcafd42a1. 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/TCAGU2319290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b877bf905385baa4ba27a057215ad309ad61e54808a0773e37ed0c638cec726. 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/TCAGU2319315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f825dc0170f4383e46d3bd3833ca252461ffeb84de6b492025875fd6fb77003. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/TCAIA2408613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc84a277f7f3137788c99ae049dca35481e98d648df55d9ae31b0b141c0b4a914. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/TCAIP2433661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a75031ad96cf47458a9243e7c8dec9203b71c76928dd430985f44a23603b805. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/TCAIT2405952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34874b6c3f0be6ced83e4d1f57f79ae2b17c26dbcc85498031838890c24fbb14. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TCAIY2443841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49176c0300c351c53283ad94a5926e17d42b1e5494de1b3b3a712aeb5b6f56ea. 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/TCAJJ2518378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68766b7ce31b3c97e537719bf8e31cc61ca02f2175af39ba143f4171da40f06e. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/TCAIR2457707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf613206370340bff6b61e9fd0558e229e5adcce8edfb10dc7337544b75808e07. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/TCAJJ2518495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x982afd7090c4308b6255ebc906c7ba1d82355d8642722240c437c3553463e9ef. 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/TCAJJ2518562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c8a83a909b48c6f30d3e46ef3bce8155864c537579bdc25ca2bd104c80c9570. 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/TCAJM2572798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cacf1545904cdc0d4aafee2415c30e07c1b8761a0877742e87d4471773fce99. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:49:44Z), 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/TCAJS2546440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d1ba4963cd07d7bf8dad740f50b2ff6c9adc5e0019903c3a2d36eac68c809e3. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QT65W2561791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b75249701ed15543b19df78deeca32d5a54862b8f19bac1e88a5a573eea251b. 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/QT65W2561811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x968331530b9ca7b37b258dd438b05ee90b7cf469033d76686cecbcb393129ed5. 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/QT65W2561848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ba5ae437891049d9a06f47e9514fc3b34fbe66a4713796c4f02e78fe15b5470. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QT65W2562038.