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 0x8d28d619ee0a299f1a9642366059751000992221c088d2facbd3929a84c9b3a4. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/65e5e464-a665-48e6-bf46-f699653bdd4d.json and https://artists.proofprofile.net/proofs/artist/65e5e464-a665-48e6-bf46-f699653bdd4d.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 0x71d24e0919da6385643f3145478893817a87717f3bc66264e95fffa1b2f8f995. 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/QMPKX1513330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bce4290cf91f626806ab9aefae432326df68ad19b12b64748f849e4ecfc4931. 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/QMPKX1513331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x825a363981af4c369593dc6d618743d497941c9eee33469e8b3646f11555d534. 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/QMPKX1513332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b497fb1cfa0e4ea9ff2516520b201388d27b03210418ad84575eca97705a1bf. 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/QMPKX1513333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f73903b04a30f7d16d3c94f9f5124c06fa0ab7e5b5ede5d7c2e2728bd598103. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMPKX1513334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45bb244d85d3cf0bf8a6636d80f339620c931b1b05fadc798efb3d70fdd2470b. 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/QMPKX1513335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79e5e649203d550f167c9b250416fc7e0973e719a5feeff46e0516e426090333. 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/QMPKX1513336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c01ce75f20e28467f04d47350efdd93fb730032ce5abff6751e6eca24a64169. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QMPKX1513339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85a697f005efb0d1dd81556f251221ac723ee8d024cac7c2d7246ad8913aa87a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QMPKX1513340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f128dd759c4bd4d7c8a85974d7c5dad7d481a2622dd90de3ce89f99440b9ccc. 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/QMPKX1513343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf42cb506fd3d972095dabb069ed5cc85a62c31c94a449747d5e7a6e476662eb. 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/QMPKX1513344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ddd0019973c1d990eaa69b04edc9f175e0cbf7102508a3e5f24daf6f40d7952. 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/QMPKX1513345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01b4c082d76f6c9e8be78258fe850962188cc1e8c0036499e70c932ba1ad0909. 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/QMPKX1513348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7b23ca58321a469859f4e082080a4b68ff89736b97740c8ef313df2530f99b7. 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/TCAIB2417223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2a8d305e070eb870d69a54ef5460c6574495d580dd4f1a3ffbd89aee8fbbdea. 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/QZW9K2282783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44ad859ab724ad4f5785c594fd4b8e94f1815a6d9a064b4c8568b949d3320015. 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/TCAIB2430840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79f4862028d7017728fdd6f4c0336be19ac0e98ab07355a1a1d0b709b07e97e4. 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/TCAIB2430887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10099437d65ba5392b8b45bcf420e61f5d93aacaa4d6fac0d205da5f900d1a62. 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/TCAIA2445935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c021484c3bb7753460345c7d7294b0cedc76fe3214bd7104d74f0b674b49265. 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/TCAIB2431186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x079780081bcb740f527708e798c16be5ed3357eabc8dfe602b171e29f18c96ac. 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/QMFME1977974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c909bca1aca460c7d064972fee494b19dac47759e72b0024011f33082e586bf. 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/QZNJZ2274978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3ccc29c11dd0f8bbd13e42bba9a51187564bc75ec64aa0b5ad1590f73b870be. 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/TCAIB2431347.