thumb|upright=1.35|A greylag goose (Anser anser) A goose (: geese) is a bird of any of several waterfowl species in the family Anatidae. This group comprises the genera Anser (grey geese and white gee
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 0xb1be36443775b1f929edc65c4a145cb0913090463739a50753907870eab3f1f9. 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/7d439185-b280-4090-9368-dbe0e2fa087e.json and https://artists.proofprofile.net/proofs/artist/7d439185-b280-4090-9368-dbe0e2fa087e.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 0xb3ab48ed7da64a68afd3148d88fa8e1d4098598e00fd99e1a2a0c6ff5f6e9786. 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/GBBMQ0600139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x170ce11a48dcec0923ef22404ea4f005bb07aa1011758a921dc3fe57e76559f2. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GBBMQ0600142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11e612204e5e0f9b20909a1b4ec24a72df609c01a962838a05fef5500da66cd4. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/GBBMQ0600134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ec70e3d860a88ebec1de18378e11299cd94aa9aebb05d3cbe1e63f2bf899d6e. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), 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/GBBMQ0800191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbba2cd71e00e7f5ce949ce2ac011d0cf8e6c9856f6e9e3226658f9a0b42d6000. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/GBBMQ0700092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d2625a515f63547d971b3a443c42626e0b4b75bf32160f969543981f6c24fbb. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/GBBMQ0700080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69771efe160fbecd26dc0868f145af60081015f3ddbefe16bc9eb4982ca6ed63. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/BEV201000002.
Control Control Control (spotify version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0be1dbb380c695645e450113c48c024a9f676e699755b174eae541b447d4c039. 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/BEV201200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1574c4081ac57c334d58816d0ea8942658d569d05178d6969c62ffb3a5e307d1. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/BEV201600003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x259f2d92d0310fbd932c46408cafa5c24475c4c5fa831b9a39debc865bfdff7b. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/BEV201000035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69bb219862a3f92a65165bf784cd35c249c29fe2a5f0870e4b2751c5125ef0f0. 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/BEV201800117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14ea9483a8f4c670198c9045585cf2c30dd3dd9a57c068703b26f4f0eb6cf970. 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/BEV201900008.
Synrise - Live / Immersive Sound Performance
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ab1fc750b543127b8c6f378ad388cc414ca1d8ae9330486457a956a6ae1581f. 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/BEV202000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb71f6872e223313fe8ee494b5f4a80e85c0686826a609839baba43c9290e8633. 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/BEV201000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde76ce0103d8bdbc7749adf8bab9fc944e077599a08c343a90a5b571650bd2da. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/BEV201100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14ea9483a8f4c670198c9045585cf2c30dd3dd9a57c068703b26f4f0eb6cf970. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/BEV201900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff2285b97d0fdedf6c41da18010cccb47055db87db634b1638496621165a00cc. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/BEV202100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff2285b97d0fdedf6c41da18010cccb47055db87db634b1638496621165a00cc. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/BEV202100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8014adca79718415e2e3e4083f9dfa0f37c0a7c790c48c540301a08514bef2c3. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/BEV202400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81dc4b80cc40d94c9849c0b3f08edf01baed2650424b518cedd55a807cf8a6b2. 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/GBBMQ0600145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00d20495029214cf4d19d55f83f2e488b5d2eaa958a7a8acc12fc0bfd4cc7b90. 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/GBBMQ0600137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x170ce11a48dcec0923ef22404ea4f005bb07aa1011758a921dc3fe57e76559f2. 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/GBBMQ0600142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8014adca79718415e2e3e4083f9dfa0f37c0a7c790c48c540301a08514bef2c3. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T11:47:29Z), 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/BEV202400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d8865ce1f428db58967b82a8e8f131ae7c6effd504a94f591fa9e6e3f956c22. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/GBUM70700410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f8bcf68e29b44573074e04916c3446c91b13034aed1cca7a55b04ab5cfd626d. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/BEV201100002.